Quick Test For Identifying a Bad Ignition Coil (Toyota Tundra)
Vložit
- čas přidán 20. 05. 2022
- These testing methods are very basic and can be applied to any car. Even without the ability to monitor misfire data, you can use trouble codes as your guide.
ScannerDanner Tools:
www.scannerdanner.com/tools.html
www.amazon.com/shop/scannerda...
For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available at www.scannerdanner.com as an eBook or paper book.
Want even more diagnostic training? Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium www.scannerdanner.com/join-sc... There is a 14 day free trial.
On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. What is so special about these classroom case studies? I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere!
Disclaimer:
Due to factors beyond the control of ScannerDanner LLC, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. ScannerDanner LLC assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. ScannerDanner LLC recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of ScannerDanner LLC, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not ScannerDanner LLC. - Auta a dopravní prostředky
Just here to say that my dad was an avid watcher since 2014. He passed last year, May 23 2021. As I went through his belongings, I found notebook after notebook full of notes and diagrams of takeaways from your videos. He was subscribed and would always message me about things he saw and how great you were at what you do. My father, at the time he passed, was a truck driver. Prior to that he was a diesel mechanic, had certificates for just about anything having to do with vehicles, trucks, air conditioning and so much more. I want to thank you for your videos and knowledge you share on your channel. You kept my father company and kept him learning in probably some of the darkest days while homeless and transitioning to low income housing. You kept him eager to learn more than he already knew and my dad was always excited to share what he learned from you. While he may have just been one subscribed viewer, you were something he looked forward to and you will never know how much that means to me. Thank you again.
Awesome comment!
Kathy, I am so sorry for the loss of your father. Thank you so much for sharing this with me. I feel like this was ordained for me this morning. Doubts about what I do and how I do it, creep in from time to time. Usually when I focus on the one negative comment out of the thousand good ones. But what a great reminder for me to know of the positive effect this is having on so many lives. Many that I don't even know about!
What was your father's name? I want to remember him.
I want to pray for your family this morning:
Thank you Lord that you say that you are a Father to the fatherless. This truth has always been close to me. That you take special care of us. I pray for a peace and comfort today for Kathy and her family, one where you remind her that because you sent your son Jesus to die in our place, that we can raise again, just like Him and that we can proclaim "oh death, where is your sting". Remind us all to have an eternal perspective today and to store our treasures in heaven where moth and rust will not destroy it. Help us to be loving and caring to others and to think more highly of them, than of ourselves. Help us to live today as if it is our last, putting selfish desires aside and looking for ways to build others up, especially with our family and friends. Help us to forgive too Father, as you have forgiven us. And finally remind us that our light and momentary troubles are achieving for us an eternal glory that far outweighs them all and that part of that glory is to be reunited with our loved ones for eternity. May the peace you offer rest with Kathy and her family today. Amen
@@ScannerDanner Amen. Thank you for the prayer. My fathers name is Rafael Valenzuela. He was by my standards one of the hardest working men I have known. He could fix anything that was brought to him. He spent countless hours reading, writing, researching. He did not compliment just anyone. He was very particular about his craft and I think with his age and your videos, you helped him feel more confident in moving forward with new gadgets and new ways to diagnose and learn. He was 68 years old. I hope to learn a lot as it was his dream that I learn a thing or two about what he loved. So far with the tools he's left behind I've been able to do my own brakes, oil changes, plug and coil replacements, O2 sensor replacement, and probably more on our Odyssey lol and I have not done a thing to a vehicle since I was a child and he would take me along to house calls. It's very bittersweet that he has given me the tools to learn his craft in this way. But life and God have plans and this was it for us. I hope he is still watching from Heaven and that you continue to share what you love doing. You've got a subscriber for life here! Thank you.
this are the sort of comments that you have to spend time to read ans understand what it says,and makes you think how fortunate we are to still keep on learning from the works of scanner danner, also reminds us that its never TOO LATE for learning..Thank you for the OP for writing this up it keeps us enlighten and thanks the creator everyday.Thanks to Snanner Danner for sharing his knowledge to the whole world..more power.
Your videos have been a blessing to my life as well Danner! Never doubt that what you do has meaning my friend! And thanks for all the sharing in this comment string all! Touching stuff shared here! Peace to all of you.
How to tell it’s a secondary misfire is some good info. Looking back in diagnosing secondary misfires I noticed now they fit the description of how they’re characterized. Thanks for the video!
As always thanks for teaching Scanners Danner 🙏
I always enjoy watching your diagnostic and learned something new thanks brother
@scannerdanner. When you dont think your posts matter sometimes...Im here to tell you "they do"! I dont post but do watch you videos often. I have a 16' F150 and getting misfire under load. Saw the code P0305 (cylinder 5). I swapped the coil to number 4. test drove it, and the code moved to number 4. BAM. Ordered new coils and saved me a ton of money plus the satisfaction I get from doing it myself. There are so many people that do the same from your videos. Keep up the great work and a big THANKS!
Omg thank you so much, I've been watching your videos to learn about my car and what I am going through and I'm convinced I have coil issues because my Honda has 221,000 miles and never been changed. Tomorrow I'll connect my odb2 reader and check the live data fir misfires to find which coils are bad.
i love this kind of work system where guys talks over to what the issues were and what to do about it...
Jimmy and daisy dog mobile mechanic!! I appreciate your wisdom and support in automotive electrical testing! Has helped me tremendously, I also have one of the old school composition books from dollar store where I keep copious notes!! Ty sir and God bless you and your family!!
Thanks a lot team Danner it's always great watch ignition problems
Great down n dirty diag. Nice when you can get to the coils/plugs... To bad you couldn't get a secondary waveform capture with that probe. Would have been cool for the video.. But hey not necessary in this case. Another awesome video Danner's!👍
Nice work, thanks for your videos!
This was a great learning experience for me. I have the same 04 tundra but with the 6 cylinder. I also have the same problem, misfire on 2. When I got the truck, I was told that a plug blew so I bought the taping kit and took care of that part but I can get up in the morning and take the truck to the grocery store and it’ll run fine until I try to leave. It’s cross your fingers time! I did order everything I need, except plugs, they are new, to change them all.
I wish y’all were here in Lafayette, La., I certainly would be leaving my truck with you guys. I’m disabled and this is going to be hard labor for me and I have no one to help with it.
Thanks again. 17:13
Don't rule out a plug issue too. New means nothing these days.
You dan i’ve been watching you for years, and even though a lot of new guys have come behind you, i feel like you inspired them.At any rate good video, i’m actually going through this on my 08 vue 3.6…..Thank you!👍🏿😂
There are a lot of guys in the CZcams automotive community who got there start with me 😊
Thank you! (My name is Paul Dannet btw)
I miss your vedios. Thanks Danner. You are my hero
Thank you for this video!
This is a great example of seeing the forest through the trees for us DIYers. Why search for the coil connector diagram and then try to back probe or poke connector wires.....when you can change the suspected with another. Occam's razor can be the best tool sometimes.
Paul/Caleb/Danner,
Another great video - thank you!
Paul (in MA)
People don't seem to understand that the main reason you can get it done so fast is because of the advanced tools and knowing how to use them. So when you call a technician, you're actually paying for his expensive investment in tools and his long hours he dedicated to training... and honestly, by the time you consider the drive time to get there, picking up all your tools, and the driving time it takes to get to the next job-- You've burned more than that hours pay, even if it only took you 30 mins to nail it down. When I did construction repairs, I always told them there's a 2 hour minimum; and I usually had 5 guys and charged $35 per guy. It's not even worth dragging out all the tools for less than that.
wow thanks for the supplemental explanation, really clarifies what SD already said... basically you want to get paid 1000$/hr for swapping coils. makes total sense.
@@rickdeckard1075 yep.. got'em
Great video buddy. I’m sold buying your book and getting the premium video subscription
Thanks so much! Look forward to seeing you there www.scannerdanner.com/join-scannerdanner-premium.html
Thank you. And thank you Caleb
Great video Paul Danner
Great Video as always Paul…
Used this test many times to verify coils
had a ford focus the other day I diagnosed with a bad coil put a coil off a f250 on so the customer can drive without a misfire until the oem coil showed up lol
something to keep in mind is low quality coils can cause issues such as voltage hits to ecm
please refer to ATS-Bernie Thompson for his case study on a 2010 Patriot with shitty coils causing issues…
Jordan
Love it, really quick diag😍
Thanks for sharing SD👍
Special Thanks to Caleb & James Danner👍
Stay Safe Guy's❤
Very great case study I would swap coils aswell
Worth every penny
Good stuff Professor. Gotta intermittent misfire on a 2011 Sentra. The coils are under the intake manifold, whatta pita. Oh well that's the way the ignition coil crumbles. Happy Motoring.
Hey Paul I am back haven't watched any of your videos in quite a while just due to some different issues and having watch this when it reminds me how much I love watching you your diagnosis and your interactions with your son I think of my four favorite CZcamsrs for automotive repair your number one buddy
Thanks so much and welcome back! You'll really like what my son Caleb has been doing with the edits. Professional level stuff imo
Simple but foolproof diagnosis.
Thanks for the video
I learned a lot thank you very much men.
Just a heads up on a 2017 dodge journey for example , using an Autel scan tool , I had to exit specific make model and enter global OBD II to view misfire counts in mode 6. The data in mode 6 was plain English and I would just enter, exit and re-enter to get updated counts. Might be worth a shot on other vehicles that do not give misfire counters in live data
Good Job Man👊🏾💪🏾
Scanner danner you are a true inspiration to us all. Because of you I've got a hole new outlook on how to work on my vehicles. So much so I've even bought a 2204a pico scope. I know it's not what you work with. But I'm eager to learn with what I have. I've seen alot of your videos and have learned alot. Thank you so much for what you do keep up the great work. Any advice you can give me about the scope I've got and what do you think my limits would be at this level in the game. Thanks again God bless
Thank you Dave!. Really appreciate this comment
About the pico, please post this to my forum, it's free to join and we can get you some more info on that model pico. I personally am unfamiliar with it but I've heard of issues with non automotive picos being used on a car
www.scannerdanner.com
Diagnosis time = tools & training are not free.
We need more tools & training continually.
Don't feel bad if it takes 5 minutes.
hey danner I am very lucky to be one of danners watching you from Sudan
welcome my friend!
Thanks Paul. Waiting for more videos . KIKE de taller Pit Lane Costa Rica.
Wow, impressive!
Great video, great information, how come no one does a diesel MAF diagnosis? Like 4 gen Ram. looking forward to more knowledge!
Awesome!!!
You are cool and good and like your video
Thats why I love snap on, don't have to mess around looking for info elsewhere
When I cant get a reading on my modis edge with a COP Probe setting due to insulation I switch it to the mA scale and can get a decent signal to view. LMKYT
I can get secondary waveform on toyota/lexus coils even using a relay with the resistor cut off. You could probably make it to adapt onto a wand style but i just hold the relay windings on the side of the coil and it picks up secondary
I also use the bosch type relay on toyota and Honda, heck even on spark plug wires
Love you how stress the point about why we charge for diagnostics cost at the end. Where is the best place to buy your book? Is it only available online?
From my website at www.scannerdanner.com
Thanks! I have an eBook and paper book
How do you cut the O Rings on fuel injectors?? Thank you ScannerDanner for another great video. Thumbs up.
bigger hammer? 🤣
Sometimes I feel pretty proud of myself, this would have been an easy diag for me, what I would consider common sense, but then theres times you diag things that are so out of my expertise its mind blowing. Working on a dodge Durango SRT 8 misfire issue now, not gonna lie, its kicking my butt. I can unplug 6 cylinders, injectors or coils doesnt matter which ones, and it doesnt make a differnce in the way it runs, also has perfect compression, perfect fuel pressure, all 8 injectors and coils have been tested, cam and crank sensor have been replaced, no change. We'll see what monday brings. Ate my lunch today
How are you testing the coils and injectors? Lab scope with an amp probe would be key
@@ScannerDanner injectors I bench test with a machine. Coils i used a kv tester to jump spark
On many of those Toyotas you can put your amp clamp on the black/red wire at the fuse box to watch the coils and injectors
For sure, but the amperage waveform of a coil with an intermittent secondary leakage issue is almost never seen on that test, which is why I didn't do it
Hey! At 4:23 where did you go to access all that data from the snap on scanner????!
Great...!!! 👌
👍 appreciate ya!
Paul you don’t normally use a HT extension to grab a secondary wave form, I thought I’ve seen you use one? Or back probe into the signal wire? I swap too i like ATS cause it’s fast like the snap on to get set up. I hate 4 wire coils lol
I have them, just didn't feel like hooking all that up 🙂
a next great one teacher. Question working on customer vehicle changing timing belt. but discover that crankshaft seal leaking ,should I charge for it too.
Yes but not for free.
Prolonged misfire could damage the lambda sensors. Best regards👍👏
Don't feel bad about the diagnostic time,, I had to charge one hour diagnostic time just to let air out of a tire,, but that's what happens when it has twice the air pressure It should have in it, check engine light on ABS light on stability control light on TPMS light on
Sounds like it must have been a Honda.
Great job Paul. By the way, how much cost a diagnostic like that. I’m a beginner diag guy here in Brazil, so this info can help me to figure out a fair rate.
As I said in the video, we charge a flat diagnostic fee whether it takes 5 minutes or 60
Figure the typical shop rate in your area, start out under that and as you build clients and get busier than you have time for....then you can raise the price. Just make sure you are profitable, saving for emergencies and expenses, and paying you taxes.
Soo fun Guy you are
Great diagnosis. Sometimes this is the quickest way to isolate a misfire. What would you recommend Paul for a good scanner to read live misfires? I know Ford has their "Forscan" software that can be used on a laptop. Is there a tool that works good across all manufacturers?
Forscan is Ford specific, but not done by Ford. It was created by a russian gentleman, and is no longer able to process payments due to the sanctions on Russia. Forscan lite for Android was still able to be purchased a couple of months ago and works well on Ford products, but I can't compare it to the full Forscan since I can't purchase a license for the computer anymore.
The misfire counters is manufacture specific, so it's not just based on what scan tool you're using.
Good diag! As you said, shop could have tried to swap coils... What would a customer rather pay. 1 hour for a expert that only took him 15 minutes, or 4 or more hours to a inexperienced guy that was all trial and error? Your worth every penny!
I almost replaced a ECM on a corolla because of no injector pulse #1Cyl from the ECM. The car would hardly move. I switched coils in case the ECU turned of the injector due to misfire code. The misfire and no injector pulse pulse moved with the coil. Replaced 1 coil. The car then was drive able but the #4 coil misfired under load. Then i had a 352 code in another coil. At first i only had a 301 and 1604 code. Replacing the battery fixed the 1604. The battery would drop from 12.6 to 10v with a headlight load. no voltage drop in the cables. Batteries don't seem to last 3 years anymore.
Drinkin and wrenchin,-- drivin and scannin.. oh, the life!
COP coil on plug - sometimes will burn right through the insulation .
Also if you can remove the insulation , you can see the spring that goes from the coil to the plug , is arcing .
That cheap spring is designed to fail .
COP is actually a lie , there has to be something between the two ; it use to be a high quality spark plug cable .
Now it is just a cheap spring
My generic OBDII scan tool counts misfires, not on a color touchscreen of course, but it was only $99
Paul, does your state even have emissions testing requirements? Also what is your opinion on the coils? If 2 are bad the rest will follow due to aging?
I would be checking the plug gaps but they claim to have new plugs in it.
We do and I would fail if the cat is missing like I assumed.
As for the coils, the owner just changed them all, but they were not new as you could see. No reason to sell all 8 but that'd be up to you.
What if you did a current ramp on the coil(s)? Do you think you could’ve caught the miss with that?
Most likely not. Some secondary issues can be seen in a primary current ramp pattern but most cannot
from the accent to the state inspection sign on the wall behind you this video was very nostalgic to watch. My cousins lived in Penn Hills, I lived in Pittsburgh but had to move 23 years ago for work and I do miss it. But I don't miss those state inspections. Just had to pause and say this, now I do hope you answer my question that I have been searching for hours to know. Either I tested my COP coils wrong or I have some bad coils. They do have 130k miles on the original plugs I think. I tested 18M ohms on one side and 1.7k ohms on the other and thought that was good, some videos are saying it should read .5 ohms and 16k ohms not M so I just need a professional opinion testing the same coil on plug coils that it seems no one else has ever posted online before.
You're measuring the plugs? I never do that. Change them! 130k on them.
Well, didn't answer my question, but still a good video. back to the search, am i asking something so simple that people just assume everyone already knows about it so no one posts about it?
@@Mikej1592 your doing resistance testing on the plugs right? It's a test I literally never use. And there are 130k on them. I don't understand what you're trying to prove. A bad plug can be proved out by moving it to a different cylinder
@@ScannerDanner why would anyone test the resistance of a plug, did I not explain that I wanted to test the resistance of my coil on plug ignition coils windings? I can't find the specs anywhere, all of mine match but are WAY higher than what people online have said about other coils. Mine measure 1.7k ohms and either they are all bad to the point a misfire is not detectable or they are all just fine. I am changing out the plugs and while I am in there I wanted to do as much PM as necessary without going bankrupt. It's bad enough plugs are $8 to $12 each and at $30 each a set of 6 coils is something I would rather not expense if I didn't need to. Thanks for replying to me though. My Honda 3.5 V6 is just about that magic 130k miles mark and the plugs are likely factory supplied. Coils are original Hitachi CM11-213's if you have any info you could share I would be eternally grateful. thank you.
@@Mikej1592 lol, I misunderstood as you threw in a sentence in between about 130k spark plugs, then proceeded to talk about resistance. My fault.
Okay, first thing, the resistance test of ignition coils is poor at best. If it measures bad, it is bad, BUT It can measure good and still be bad, as the ohmmeter does not stress the windings. Also, you can have carbon tracking and shorting of a secondary winding that the ohmmeter would also totally miss.
So I do not do ignition coil resistance testing for this reason.
Secondly if you have 3 or 4 pin COP ignition coils, you cannot accurately measure the primary winding, because there is a transistor inside of the coil that would be switched off and blocking you from measuring that winding.
If you have a constant misfire that you are trying to fix, move some plugs and coils around and see if it follows. Like in this video
czcams.com/video/jfIG0dk_09s/video.html
Whats your opinion on walker o2 sensors vs bosh and others for jeep grad cherokee I know you said bosh sometimes is not compatible with chrysler and can cause problems from the gate ?
For Chrysler systems that use the PWM heater circuit you MUST use an NTK sensor or equivalent. All I can tell you is the Bosch sensors won't cut it here. They make good sensors, just missed the boat on these applications
@@ScannerDanner I ended up using the walker from oryleys over the bosh and no problems the bank 1 sensor 1 came back and long term adaption went back down from flatlined at 32 now at 3.9 so rough running is gone. O2 sensors seem to be one of the common checks for rough runners for me!!! Good day sir and good luck on the new vids
@@wrightsrrt871 sweet! Good to know, thanks for the info
Did u hear that ? Its gone ...its back.....when u rev it so it about ignition....
Big love
We're the plugs good?
Or changed?
I like to do a visual on the plug as I swap.
pay the man!
what snapon scanner are you using
Verus Edge
I have a 1995 Maxima. Can you tell me what causes a weak spark( the spark is yellow). Can timing cause a weak spark? Thanks.
Yellow spark being weak spark is an old wives tale. When testing for spark with a small air gap, the spark will look yellow.
How far the spark can jump is the true test. Most should be able to jump almost a 1 inch gap when tested from the coil
Rewatching and just wanted to comment.
I've done coil swaps and the misfire goes away.
Then it's down to close up visual inspection for arcing, burn marks, corrosion on the spring or plug tip etc
And resistance checks.
And spark plug inspection.
I've been lucky & sometimes you talk them into plugs & coils bc they were installed at the same time originally, usually, and go bad near same times.
Excluding external damage etc.
Bad plugs ,makes bad coils. I agree Gregory Fairchild
@@overload3996 I try to tell people that all the time. If you throw a new coil on a bad plug you may just fix a symptom not the problem. A few months later you may smoke that coil again.
@@Troy_Built yes, also new wires over carbon tracked plugs.
There are always those variables when you start touching things. Intermittent problems can be the worst!
@@ScannerDanner could you better clarify this please.
We have years of experience , classes and training. Add in tens of thousands in tools. Cost of owning a shop or mobile service. There has to be a minimum charge just for looking at the problem. Doctors , lawyers and other suit people get paid for their time. We should be no different.
If anything, our jobs are harder. We cannot talk to our clients. We deal with owners who are not always forthcoming or third party with a scanner.
I charge .5 to connect my Scanner. Tool updates ect are expensive. Minimum 1 hr diagnosis. So their automatically looking at 1.5 hr for diag. If you don’t like it go down the road. & I don’t care what the parts store or CZcams told you
Just like going to the doctor. that will be 125.00 how will you be paying cash or charge card.
📷 man very impressive 🎥 🎞 take care thank you 📷 man
KNOWLEDGEABLE Sir ScannerDanner
Thank you very much,take care Sir ScannerDanner
From Nick Ayivor from London England UK 🇬🇧
cool but what is wrong with truck that it burns the ignition coil
Just wondering what an Ohm test on the coils would have revealed..??
It would have most likely measured good. A resistance test of high current devices like ignition coils is often very inaccurate
Brothers, I have an 03 Sequoia that has a key ignition switch issue that I had fixed and now the immobilizer will not let the vehicle start. I do not know what to do about it. I have original key. I am the owner with the title buy the way. How do I get my vehicle to recognize the key again? It has 300,000+ miles on it but ran very strong before I pulled the ignition key switch.
It will need programmed
Wow sounds like a 70's El Camino.
😆
What diagnostic did u use?
Not sure what you mean? What tool?
Could a weak fuel pump give a similar miss when running ok at idle but stumbling when revved up in your experience?
Feels totally different and that would affect all cylinders. Combined with lean exhaust trouble codes, and a different type of low power symptom
I say even if they call you in to test the battery, if they call you in, it's worth your time.
Nissan has them buried under the exhaust. You have to take it apart and re assemble to try this test.
I hate when people complain about price. I always get signed approval on a written estimate, they know/knew the price up front! lol The think I am just pocketing that cash check or cc bill...businesses cost money to run. Fed, state and local taxes together make more per-hour than I do some times.
Throttle actuator represents potentiometer thus its slider is accustomed issue. Just replace it with healthy one. To be honest I don't get what does ignition coil swap impact on engine performance. The issue just changes its residence, but still remains uncleared?
The misfire moved with the coil, it needs a coil.
The app code could have been set from previous hands under the hood, why would you change a perfectly good part without knowing?
@@ScannerDanner oh yes! Since the misfire has changed its location upon coil swap, it represents the solid proof of bad coil existence! Could the error codes uploaded obtained on the device be false? If so, this check testified coil issue.
@@khatokhato9350 yes, remember my brother was in there and had the fuel rail out twice for injector leaking issues. This is why clearing the codes, advising the customer on what we found was the best next step for that app code. The main issue was fixed which was replacing two coils
@@ScannerDanner Yeah I appreciate the value of your kind directives you passed me. Things are getting explicit.
@@ScannerDanner when you say 'misfire ' I reflected you were referring to accidentally swapped wires on the coils. But as I got later you were referring to failed coils. 'Failed firing' instead of misfire could be more relevant.
Coil can be ok , the connection between the coil and plug can start to arc
So where do I get the Mitchell wire diagrams ? For 20 dollars? I believe
www.eautorepair.net/marketing/html/products.asp?VID=&Count=Y
I am surprised that tundra did not trigger coil code. That is what Toyota normally would trigger. Toyota many times will trigger coil code before any misfire actually. Interesting.
15:50 not to disagree but my $90 Autel battery tester / scanner shows misfire data from Toyotas just fine...
That's awesome
how much does he charge an hour?
Please tell me you stuck O2 sensors in it ??
Nope, downstream O2 faults (no downstream fuel control) and customer didn't want to spend the money
All a good sensor is going to do is tell the computer that the Cats aren't working.. if they're even there anymore. So what's the point?
Funny, that currently if the O2 sensors are bad, seeing that gas in my area is $5 a gallon, I would think for the sake of somewhat better fuel milage running a V8, the customer, you would think when presented to the customer they would have that fixed.
These were downstream cat monitoring only O2 sensors on this model. No fuel trim control based on them
@@ScannerDanner got it, they essentially they just monitor?
@@midnight-xpress1136 on this model and on most yes, but there are some (when a wideband O2 is used upstream) where the downstream can be used for some fuel control as well
Will the autel pick up miss fire's to .
My Autel BT906 will show misfire counters. Love it!
Yes sir
@@ScannerDanner thanks danner
Can you OHM test a coil and rely on the reading?
Not on this design. You can't get to the primary. Ohm checks aren't conclusive either on any coil unless a winding is open.
Short answer is no, unless the coil is completely dead. An ohm test will not typically reflect the coil breaking down under a load
No, I have an example in my book of a shorted secondary winding the measured good with resistance. Then there is also secondary leakage which the ohmmeter will never see.
I almost never use my ohmmeter for these.
Damn, that truck is rough. If I was a coil in that truck, I'd let go too. Lean cylinder stress those poor guys out?
😄
That was way more than a couple of years ago. I think
2019 I believe
I got a 2011 tacoma prerunner & it's misfiring on 1 & 3
And?
Negative battery post could be cause of that misfire
raw fuel from misfiring from a crappy coil can fault out an O2 sensor
Sure can