Dodge Dakota: Intermittent Skipping, Bucking, Poor Running Part I
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- čas přidán 1. 01. 2018
- Come along with Eric O. as we have a look at this Dodge Dakota with the 4.7L that has an intermittent condition of running poorly and setting a P0300 and a P0303. Freeze Frame Data shows us that the problem occurs during a hot soak and Fuel Trims on bank one drop to -25% short and long term. As with many intermittent problems it was hard to duplicate but we do quickly discover that the bank one is running a tad on the rich side. Could this be causing our problem? Let's see what we find out in the end. -Enjoy!
Part II: • Dodge Dakota: Intermit...
OTC 3896 Bosch Evolve Diagnostic Scan Tool: amzn.to/2Evycgu
OTC 3398 Fuel Injection Pulse Tester: amzn.to/2C8qRBM
OTC 4480 Stinger Basic Fuel Injection Service Kit: amzn.to/2CpTCxn
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All right folks why is Eric only at 109k subscribers.. let's spread the word and get him at 1 Million.. these are the best videos on youtube..
Best auto channel on CZcams. I look forward to every video.
Your not boring me, this is interesting. I'm not a mechanic and don't know much more than the basics thank you for teaching me more!
many thanks, Eric, All the best for the new year to you and your family including the dogs, god bless.
What? No more Dorman ads! :)
This should be a good two-parter.
Morning Dr. O'
I haven't seen one of those injector testers, I will be buying one of those. Thanks Eric
I guess you could have swapped that cracked injector to the other bank to see if the fuel trim problem went with it, but that's a lot more labor and since it is visibly damaged, it's a good bet to change it. Even if it isn't causing the problem, it should still be replaced.
Your theory makes sense. Thanks for the video.
Thanks for this video. Great diagnostic work. I always thought OTC tools looked like homemade tools, but there's really no excuse for the tester leads to not fit correctly. Good thing that injector is cracked on the visible side.
Happy new year Eric, belated merry Christmas.
HAPPY NEW YEAR GREAT JOB
Thanks for this video. I'm having a similar issue and I'm buying that otc box today to try mine out
So much great information and learning on these videos
Just purchasing this exact year and model..thanks for posting
Another Great Video! I've seen Part 2. I agree, should change the 4 injectors.
Good morning Eric. It will be interesting to see if the injector leads this diagnostic process in the correct direction.
Not too nock eric the car guy but why is it that my man here, who goes in to the problems with equipment for explaining and showing the process of how to figure out what's going on. Is just 100+ thousand subscribers,when he makes things more interesting and more wanting to learn and watch what's the out come. Please folks show some love and support him,cause honestly watching him makes you learn more and gives you more motivation to try to fix your own car a hundred percent. Subscribe and like his videos cause at the end I would feel more confident to have him fix my car,after seeing how he deals with problems that cars come in with to fix
I assume you let all your friends know about this GREAT channel. Pass the word, encourage others to do the same.
I came across it completely by accident. I think this one is the BEST. Knowledgeable, thorough, and TRUSTWORTHY.
Great Mr owe this is fantastic
It's always gotta be the back one. Never the front one that's easy to get to.
Yep, It's like heater problems, it can't be the actuator that's right under the HVAC, it's got to be the one that requires you to strip the interior out to get to it.. I miss the old control cables....
Like the heater core i replaced in my 99 dakota
Hi Eric, Happy New Year! Great video as always. Do you still have the adapters from your old injector tester? Perhaps you can make the old adapters work with your new tester?
Happy new year from ROMANIA
Cool, we haven't done this test in long time! Thanks!
There's a part 2 .... I'm intrigued:)
Pretty definitive diag there, Eric! I am curious if the paddle probe would have shown a rich burn on cyl 7 and lean on the other three? Then with the truck running would be interesting to try an "injector balance test" meaning unplug one injector at a time and look at fuel trim changes.
Oh and those OTC pulser adapter leads are a pain in the ass lol! Maybe rig up some leads together from the AES Wave kit. So far I have not found a scenario where they didn't work. Looking forward to Part 2!
I guess I'm kind of randomly asking but do anybody know a good site to stream newly released tv shows online ?
love the video's as always. incredible content you put out. Your video's have inspired me to film and upload vid's of me building a twin turbo 2004 mustang 4.6 4v combo. Just getting started but should be fun. Keep up the good work
Thank you for your video.
I used to love to wrench on engines when all you needed was a dwell meter and a timing light... The last vehicle I could use the timing light on was my 86 Mustang GT.. But, since "you can do it, I no longer have to!" ha, ha... :) I'll gladly pay for this kind of stuff now..
My 2005 Dakota has 191K miles and runs great! No engine problems, only had to replace the EGR at 50K.
When you yelled at the camera to focus I was waiting for the "you fack" after it. I guess I been watching AVE too much 😁
It shows how codes don't tell the whole truth, but the effect on other components.
I hope a new injector is the fix.
Have a happier and healthy 2018 :-D
Great video. So fun to watch. What's your brother's channel?
Sounds like a good approach. What is the sub frame in the background leaning against the wall?
I would do the exact same test that you have performed in the video I would also scope those injectors on bank one all of them at the same time and watch them while they’re running and see if that cracked injector has a higher amp draw as it warming up
Happy New Year. Question; since some of the computers decisions are made on comparisons of input data, would it be good to test the "good" bank injectors as a baseline for the "bad" or is the O2 and fuel trim data enough to work with? I understand you don't want to do unnecessary tests but I've been tripped up a few times, I'm an old diesel mechanic but I'm trying to catch up with technology. Hope thus question isn't a waste of time. Good video.
Twitchy gauge tells the tale, I believe - one must be dumping more than the rest, and I think you've confirmed that with the test. WOAH, automotive poetry! That was terrible. My apologies ... :D I know there's always a twist in the automotive world, so I wouldn't be shocked if I was completely wrong on this.
Love how stuff is built today. I had the same injectors in my '86 Grand Marquis for 29 years, 222K miles - all still good (replaced them because I broke the plastic pintle cover off of one). Guy who bought them on eBay tested them (guess he had a machine that could measure flow) - said only one of the 8 was 3% out of spec! Not bad. Curiously enough, our '93 Volvo 940 looks to have identical injectors to the Merc.. I'll leave well enough alone on that one.
Patiently waiting for Part II .... ;)
At least I'm not the only one up this early.
Great job
Amazing what you can find with a visual inspection, nice find.
Hey Eric!!! What were you about to say at 13:47 of the video just your tool nearly fell? It was regarding the scan tool.
I'll bet that oil is ruined- if that injector is bleeding out when engine shuts off, too. You used that same injector control to diagnose that '89 C5 a while back. Good stuff. Get well, Gavin!
It's always the hard to reach one... plot twist !! Turns out it was bad shop air all along !! 😂👍
Eric O, would you not only want to double check the same cylinders, but also check the cylinders in the other bank to have a reference to go by , and compare them all ? Just wondering what a known good should be.
I think she's misfiring might be losing some compression out the holes in the fender LOL all the gadgets and the clipboard it's time for Rocket surgery good job buddy
NICE ONE !!!!!
You two make me blush!😉Youre a very lucky man sir! Count your blessings!
Good morning!
Maybe pull out the Pico scope and look amps and voltage of at least two injectors? You should be able to see the pintle open and close using the two waveforms.
I was always told to do a fuel pressure test before a fuel injection test. I have found bad fuel pressure regulator can be a cause of skipping and bucking also. But i guess every case is different.
Hey Eric, I'm not familiar with the scan tool you are using, but, I know most tools will toggle the fuel pump relay, as well as the ASD relay, which would save you the whole key toggling thing.. Just a thought..
Just for kicks I would like to have seen what a "normal" pressure drop is from a cylinder on the other bank. Presumably the same as the three on the bad side but.... Just another point of reference.
Your a lucky man Eric O.
Yep the computer makes adjustments to correct the fuel trims from the bad injector & causes lean misfires on the good cylinders. Nice attack strategybut are you hiding more in Part II HAHA
In my experience the injectors should flow all the same. I worked on a car last summer with misfires injectors were +or- 1 psi of each other. Put new injectors in and solved the problem.
I did the same damn thing with my first injector tester after that I put a 2amp fuse on the wires for the injector side. Great video
as jump as the F/P gauge looked in first test, probably could've unhooked one at a time while running and look for the dancing gauge to stop. scope injection pulses to confirm they're fairly equal/not wiring issue
Damn that's some serious body rust. Same as here in maine
Good job as usual eric o..
Was trying to film changing a turbo n injectors on a ford mondeo today with my phone...this filming isnt as easy as you make it seem.
even harder is filming and keeping your head enough to talk properly about what your doing, not everyone can do it, including me.
I'd be a bumbling idiot and have a hard enough time keeping focus just talking to someone else :))
Damn the money light... Check out that massive body rust!
Ahhh. Nothing like an SMA video to start the day...
Off to the airplane factory now!
hi, wonder if you can help..i have a 2003 dodge dakota with 4.7.it will start fine and will sit and idol but the all of a sudden it will start to gasp hard for air a couple of times and stalls out.
#7 is also closest to the exhaust collector where most O2 sensors live.
my ecm burnt-out brake lights and turn signal/flasher when the pigtail trailer connector shorted out - was wondering if the brake light switch on the brake pedal-bar switch can be direct wired ?
Would a valley pan gasket leak cause a random misfire? Plugs wires, cap, etc all changed , after a mile or so, truck runs fine, but a little sluggish, does not stall at stops, 2002 Dodge Dakota 3.9 l magnum
This is happening with my 2004 Dakota. Mine is a 6 cylinder. I don't understand most of what you're saying? It's starting to act up more frequently. It seemed to subside when I only kept it under a quarter tank, but that may have been a two-week coincidence because it's back at it. When I accelerate it acts like I'm running out of gas,usually after it's been running for a few minutes, and smells rich. It's a struggle to get up to 30 mph some days. I imagine people driving around me think I'm driving a stick but don't know how lol. You're explaining exactly what mine does with the codes and flashing light exedra. Can someone explain what's happening in lamens terms? The short story was an injector?
good stuff
After watching this video I wanted to see if you might be able to assist me with my own truck. I have a 98 Dakota with the 3.9 liter V6 and I'm having a lot of the same problems as the truck and video the only difference is I'm getting codes P 0300, 0301, 0351, and a 0132. I do already know that those three codes are misfires and the last code is my O2 sensor bank 1 sensor 1 running rich. I can only assume that the sensor is the problem that I have having because I cannot get it out which tells me it is probably been in there for 22 years. If you have any other advice it would be greatly appreciated.
My 4.7 started doing the same thing, replaced all the fuel injectors and it was fine, they were rusted out from the inside
nice body work!
gremlin on.old ob1 dodge is the engine harness due to it location in engine bay subject to heat amd vibration..babied mine up to 528, 000 miles finally found another decent harness .narrowed it down finally after moving old one a bit and starting right up..noticed on.my other dodge newer basicslly engineeres did same thing..also dumb idea putting charcoal canister under truck hoses mush up 204 code
I like the rust colored paint on the wheel well arches...
Crank sensor gave me exact same symptoms. Happened randomly trims were the same. Put an oem sensor in and it fixed it. Don't the 5 sensors before
Did you record that accident, sending a tool up in smoke?
Might be worth a trip to the junkyard for some various injector plugs/pigtails..... Homebuilt adapters.
My thought also
Autel 908 is good with this test on Chrysler, You can pulse individual injectors for a specified duration of time.
Just don't slam the doors he won't have any scrap weight left
Eric, thanks for sharing!
How many times can one run injector test before hydrolocking the engine?
Is it okay to swap polarities.. When testing the injector!
I have an 07 dakota and the rpm ans speedometer spike up when I'm braking..any idea what that could be?
This video is very intriguing 🤔 definitely looks like that number 7 when it's failing its just dumping all the fuel it can and which makes sense would be causing the miss fire on the other 3 good cylinders Eric O @SouthMaimAutoRepairLLC
Holy crap that thing is a pile of rust!!! Not enough fluid film will cure that one.
OMG..Lolll.. I'm still laughing at that last video you posted..Lollll.. I gotta change my shorts.. Lolll
Happy New Year Eric. Just wondering if the next time you visit the salvage yard you could snag a few different manufacturers Injector plugs and make your own adapters? Just thinking out loud.....
Kenneth, OUTSTANDING idea. I did this same thing on my 4.7L engine with the same OTC tool. What a pain.
same thought
kenneth brown very smart idea.
On the units I've made I do that to get the connectors, then trim off the locks and outer housing so that you only have the inner 2 pin plug. That inner plug will fit multiple injector versions once the outer keying is gone.
It appears John baugh had the idea first. Sorry John, I had not noticed it until after posting.
I have the matco unit. Comes with 4mm banana style connections to the box. Combine that with the AES wave terminal kit and there’s nothing you can adapt to. Never had a problem with wires coming off.
Dam auto correct. That should say nothing you can’t connect to.
Having a similar problem with a 3.9 dodge. Chrysler got real crappy since computers. Wish i could afford one of your computer diagnostic gizmos....
I hoave 06 Dodge Dakota it has a P0 300 too but it only misfires when I first Crank It Up what could it be please help
Wouldn't the rear 02 sensor data show if it was really rich or not?
I had the injector wiring harness melt on my 3.8 T&C minivan and the injectors grounded and that left them open. Lots of gas vapor out the exhaust. I put silver insulating tape around the new harness when I replaced it. I bet the rear of the engine is the hottest place in the bay.
I'm thinking electrical issue of some sort and cooked injector coil. wonder if he checked the fuse to see if someone bozo'd it
Dash harness for my 14 ram suppose to arrive today
What's UP with that 02 long fuel trim
Good little vid with injector relative test .
The otc tester was weak sauce, even dorman would of likely done better harness tails !
Shame you junked old one as could of grafted cable over .
Hmm I have been dealing with p0300, p0301, p0303 and p0305 for over 3 months now. I'll have to check out that upstream O2 sensor sometime soon. Just afraid of destroying the threads..
Did you do it? Did it fix it? Mine has a misfire, but only in the summer. Lol. And after the truck is hot....
But be careful the rubber seal may tear. So if you do take this route proceed with coucion unless you have more injector seals lying around.
The part that needs replacing is always the part hardest to get to... always.
Send me that blown up injector tester you mention in the video.
Fixing oddball, proprietary, hard-to-find electronicable stuff is what I do. I've got things to fix stuff.
You just got another subscriber, ME😁😁
Had a 99 power wagon per paint bank 1 had one set of 4 injectors and bank 2 had a different set of injectors took 3 days to notice it the two different types of injectors that fired at different portions of fuel to the engine the higher on the right the lessor on the left after 2 weeks we finally worked it out with a matched set of 8
Boring ..... YES .....bring on Mrs O .....that will make things more exciting
Looks like you forgot to publish part 2, the link does not work
ITS A DODGE ! LIKE MY 97 TRUCK
ALL RUSTY AND JUNKY 166K STILL GOES AND READY FOR WINTER
I think if you could have swapped the #7 injector with say #3 injector to see if the psi was to drop in #3 and stay in range in #7. Like you could do in bad coil over plug diag.
looks like the P0-RUST code too
Could you have done this - get the engine to closed loop, disconnect the bad injector's wiring harness, see if the bank goes lean. If the bank goes from rich to lean, then you can be pretty sure the problem is isolated to that injector?
Good question and I do not know is the answer... I will try that some time and let you know the results ...
that should make a change and the f/p gauge would likely quit doing the funky chicken dance also :)