2004 Dodge Durango, 4 7, P0306 Cylinder 6 Misfire caused by water from windshield
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- čas přidán 22. 09. 2018
- 2004 Dodge Durango, 4 7, P0306 Cylinder 6 Misfire caused by water from windshield
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Video 4 covering hesitation, misfire and engine codes on the 2004 Dodge Durango 4.7L
A few months ago the check engine light came on and the code was P0306 (misfire #6 cylinder). I let the vehicle sit for about a month thinking I had a fuel injector problem. However, I then found water in the spark plug/coil pack well of #6. I've been thinking for a month that I may have another warped head (it has happened to me before). Good news is its just water from the windshield coming in past the cowl and draining onto my coil packs. Bad news is, the best fix is about $160 here:
www.amazon.com/Genuine-Chrysl...
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🔥🔥Check out the playlist covering more Dodge 4.7L issues.🔥🔥
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I used a weathering strip between the cowl and windshield from autozone 10$ that stops most the water. Then used some rubber spray seal and silicone on the other spots I saw water dropping in and problem fixed for less than 20$
Gotta make sure to clean the dirt off the windshield though first so it sticks
Great tip. I’ll check in to this!! I know there is still some water getting past my fix but nowhere near as much and I’m not getting any skipping or engine lights. Thanks for the comment!
Awesome info!! Been struggling with this I was informed it was a vacuum leak but I couldn’t find anything . This makes perfect sense !! I had my first issue when I went through a good size puddle . And it’s been running bad ever since .
I chased a vacuum leak too. I’ve tried multiple ways of waterproofing the tps sensor also. It seems like every time we hit a big puddle we loose the tps and it begins running rough. In a follow up video I put a large amount of dielectric grease on the plug to the tps in hopes of avoiding this problem....still happening
Excellent video I have this problem and your information has helped me do some more troubleshooting because originally I thought I got some bad gasoline but now after changing all my plugs and coils I still have the same thing coming up as a fault so I now need to check my injectors.
Good luck. These vehicles can be temperamental for sure. Let us know what you find.
Great assessment I'm thinking of buy 2004 Durango the lady told me it needed a tune-up and was misfiring so I'm thinking it the problem you're talking about. God bless Tony.
Good luck with your purchase. If it has been a while, a tune up would do it wonders
Dude omg you are the best one so far.
I got the same problem .
It rained the other day pretty hard.
I got the same code.
Thank you
Thank you thank you
Dude! Thank you so much for posting this video! I've been trying to figure this out for months. When I first came across your video I couldn't believe it. But after some testing and trouble shooting I became convinced. Ordered a cowl for $127 and that fixed the problem! Thank you! Thank you! Thank you! One question. Where did you read about this problem? I searched high and low and your video is the only thing I found that nailed this issue. You ROCK!
It’s kind of a long story but I didn’t read about the problem anywhere. I found it when I thought my heads were warped again because there was water sitting on top of the spark plugs. I just kind of backwards worked in my mind and figured when I saw the cowl was off the windshield and that’s when I realized the water was going down in there so I used the water hose and sure enough that’s what was causing the problem
Good info , helped my issue . Iv changed out my coil packs and plugs on my 06 durango at least once a year cause this issue. Thank u.
Glad to hear it helped! We fought water intrusion constantly.
I just bought an 06 4.7 L I checked the window cowl and it’s exactly what this video describes
Thanks so much I watched your video and that's exactly what was going on your a blessing
Thanks for this information
Am actually dealing with a number 8 misfire in my Durango
This may be my problem we have lots of rain in Seattle!!!
🤝
Could definitely be it. Seal the cowl or order a replacement and hopefully it will help.
Same exact problem here, the cowl they put on (brand new) doesn't fit snug to the window so there is a gap, the water runs directly on top of the engine and the ECU wires and plugs get soaked. My solution was to use clear silicone latex and just caulk the thing for a year long solution. It is better than chasing codes all year.
Thanks man. I’ll get back on whether or not this works. But I have the same issue.
The early Ford Expeditions had a similar problem as this, except it was caused by an air conditioning hard line which ran over the top of the motor in a diagonal fashion, dripping water due to condensation onto the #5 or #6 coil pack I don't remember which. Of course, the dealer wanted like $75 for a new coil pack, until I discovered this problem and found out it was a design defect. So I ended up replacing he coil with an aftermarket one and then putting insulation around that metal A/C line which ran over the engine. Unfortunately, since the line was metal I couldn't just re-route it like a normal rubber hose.
I can't believe that there no knowledgeable (and honest) mechanics that would identify and fix this.
I have had milky engine oil issues for a while. My Durango 2006, V8 4.7l is very low miles 62,000 as of Sep 2023 😀. When I change the oil it remains clean if there is no rain. But as soon as it rains, pretty much the next day, the oil starts to get milky (color changes to tan) and the level starts to increase.
Three mechanics have said "Blown Head Gasket"... $3,700 job or new engine. However, one mechanic who does not do Head Gasket jobs told me "It seems just regular water, not the antifreeze.. water is getting inside, but do not know where from".
Then I saw a few videos and came across some that talked about the cowl leaks. So I verified and confirmed my car's cowl is loose, just like you showed.
First of all, the cowl leak could really cost you a large amount of $ if the mechanic "diagnoses it" as a blown head gasket and the work is done, but you could still have the same problem the next time it rains. This should be a recall from Chrysler.
I am changing the cowl.. We'll see if it fixes the issue.
Thanks
Sound good
I have a 2004 Durango with the 4.7 engine (179K) and it too had this problem. I think I've solved the water problem by sealing the cowl to the windshield and sealing all the holes. I've changed the coil paks, changed the plugs and changed the fuel injectors. It still give the code sometimes. I took it to a mechanic friend and it ran perfect going over and while I was there. I had to take him out and put it under a load to get it to throw the code. Today it ran rough from the startup till back home. It's so frustrating because it's not consistent. I've been on the Dodge Durango Forum but still no answer.
The engine does not smoke and uses no oil. Although it threw one P0300 all the rest have been only P0306.
William, thank you for sharing your experience! When I made this video I used a small rubber hose split on one side and slid onto the cowl to close the gap. Unfortunately, My 04 is currently sitting with a P0306 code and running rough. I’ve swapped the coil packs around (relatively new) with no change. I’ve swapped the throttle position sensor (multiple times). I haven’t changed my injectors, but it’s probably in my future. I’ve also read that the code can be caused by a malfunctioning o2 sensor. I might change those too. Here’s to owning a Durango 🙄
Thank you. Poured water on my windshield and sure enough water poured in. I clear siliconed it. Now hoping the well will dry soon and quit misfiring. It happened before and changed the packs. I am betting they didn’t need changed. Oh well. Live and learn. Ty again.
Douglas White sane thing happened to me too. I changed coil packs, plugs, tps, etc and this has by far been the best fix. I’m glad you found it useful, thanks for watching.
Any update on how yours it working now Doug?
@@johnboswald6049 still working. Lots of rain no misfires. I siliconed my cowl to the windshield. Thank you.
Just happened on this video. I have an '04 Dakota, with the 4.7 engine. The other day my thermostat stuck, blew water and coolant all over the engine. I replaced the thermostat and water pump. sprayed off the coolant. Low and behold, went to start the truck, didn't want to start, ran rough for a bit. Had a check engine light come on, local autozone said "random misfire". I have checked yet, but hopefully the water and coolant is the issue. Truck has 150K miles, runs like anew car, so.........
Thank you for this. I've had cylinder 5 coil replaced 3 times in the past 16 months. They mentioned something is leaking into it. I'll check that this weekend to see if that's the issue
I’ve had so many water related issues stemming from the cowl leaking (including multiple failed TPS). To narrow this down I used a water hose and ran water down the windshield checking the length of the cowl. Let me know what you find.
@@TonyCollumtheHOWTOHERO I'll try that soon as I get home from work
@@TonyCollumtheHOWTOHERO did the water test. Hopefully after I get that fixed no more misfire
Awesome! Was the water pouring in past the cowl?
@@TonyCollumtheHOWTOHERO yea. Took it back to firestone n they said its dripping on 3. My misfire is cylinder 5. I'll take it to the dealership when I can get an appointment
My 04 is making a ticking sound when I drive. My mechanic said it was cylinder 6. If I replace cylinder 6 will that fix the issue???
U help me alot it happen to me Everytime it bad weather
I’m glad this helps.
Mine is misfiring AND has a water puddle under it after all this rain. I think you might've helped me. I'm going to get it diagnosed tomorrow and I'm going to discuss this leakage because my seal around my windshield is loose. Thanks!
Piscean Buttafli awesome, glad it helped. What I did was take a piece of rubber hose and split it with a razor blade and then slid it onto the cowl seal...it helped close the gaps and prevented a costly cowl replacement. Especially since it would happen again after time with a new one. I’ve also had others say they used silicone to seal it up. Let me know what fix you use.
Dealing with the exact same issue right now. Just finally figured out what was happening after diagnosing it for a day. Was getting a cylinder 4 misfire. And random misfire codes popping up all of a sudden recently when it rained. Noticed that the cowl on mine doesn’t sit flush in the center and lets the water rush right in. Went and bought the upgraded cowl from the stealership today but after watching a few videos I’ve seen people install it and there’s a few improvements with it but it still seems like people are having issues with the gasket not sitting flush in the middle against the window.
What did you end up doing ? since i know this video is a few years old at this point.
I’ll be honest, I’ve sliced small rubber hose and installed it along the “gasket” edge to act as a filler. I’ve sealed the edge where the hose meets the windshield with black silicone caulk and I’ve even used dielectric grease in some of my connectors (tps to be exact) but I’m still fighting the issue in one way or another. As long as it’s dry it is fine, but now it seems when we drive through water standing on the roadway the tps goes out.
It’s one of the worlds greatest mysteries
Everytime it rains my Durango misfires but when it dries out it's okay going to put some sealer and stripping on the windshield and see if that will stop it thanks for the video
Marshall Stewart I almost guarantee that the cowl leaking is your problem! There is another fix that some people use where they build a pan that fits on top of the engine and collects the water and directs it away...I’ve even heard of some people sealing the gap between the windshield and cowl with silicon...I just didn’t want such a bad looking fix. Good luck and let me know how it works out.
Sure will thanks
PO308 today! 2001 Durango. Starting with plugs as I know there's 40k on these old coppers
Was there also a very loud knocking sound? I believe I have the same problems, and it also started from bad coil packs.
jeffpc34 I don’t remember a loud knocking. But it could be possible. Good luck and let me know how it works out.
I used expanding foam near the windshield gap seems fine now
Update. I siliconed the cowl. It rained last night. Opened my hood this morning and see water. I got to looking and where the windshield wipers come through cowl there’s a hole of course. Poured watered there and sure enough water dropped on my coils. I am getting a p2308 code. Is that cylinder 8? Thank you.
What to do bout sealing the wiper holes?
Douglas White I think I actually sealed around the wiper holes too. Initially I thought that was where it was coming from. However, make sure you clean out the drain holes on the cowl because the water shouldn’t be able to build up on the cowl to the point where it overflows in through the wiper holes. Try running the water at the windshield using a garden hose and see if the cowl drains normally
Yes I also believe p0308 is cylinder 8 misfire.
I have had the same issue with my 04, I knew about it, but doesn't seem to be an issue when it rains, only when it goes through a car wash or large bodies of water when the water can splash up. When it starts acting funny, I just pull the coil pack and blow out the water with a long tube on my air compressor. That's a temp fix. Now when I go over hills the vehicle seems to loose speed and just doesn't have the power anymore...235k miles. My v6 Dodge caravan has more balls than this 4.7 does. It's mostly just a backup vehicle for my '11 durango. Think I just need to sell the pos and get a 5.7 since those plugs are angled different, unless there are issue like this with the 5.7 as well.
I ended up taking small rubber hose, splitting it on one side and sliding it in the cowl where it meets the windshield. The hose fills the gap where the cowl has warped and has worked so far. I just recently started getting a misfire again so I may need to re-evaluate.
Replaced cowl tray still leaking. The rusty bolt in your video that connects wiper arm is where waters coming in on mine.
That’s interesting. There is definitely a flawed design somewhere
@@TonyCollumtheHOWTOHERO DEFINITELY!
Mine too
I have a issue with the serpentine belt on the 2004 dodge Durango 4.7. I replaced it. No squealing until I turn on the ac..... what did I miss here?
Was it squealing at all before you changed the belt? What caused you to change the belt?
I ask because if the bearings are going out on the ac it could be causing a drag on the belt and causing it to squeal and potentially fail...so if you changed the belt because of damage this could be your culprit.
But let’s start out simple first...it could just be a low quality belt and just squeals. You could try replacing the belt with a better quality one (especially if you had no squealing prior)
Second, you may need to replace the belt tensioner. If not putting the correct pressure on the belt, when you turn on the AC I causes the belt to spin around the compressor pulley.
If the belt and the tensioner are good then you may need to check the ac compressor/pulley.
As a note,
My daughter had a similar issue on her Toyota and it turns out I didn’t tension the belt quite enough
None of this is a guaranteed fix. Just do your due diligence on troubleshooting and good luck!.
@@TonyCollumtheHOWTOHERO I changed the belt because 2 of the grooves on the belt were missing. It needs 6 the belt had 4.
No squealing at all with the damaged belt
100 percent pure silicone to the gap in the windshield gets ot done for a couple years
Did it make a knocking sound?
No, not really a knocking sound. However, I did think that it was another throttle position or idle air control valve problem....once I realized it wasn't another blown head gasket. The water sitting in the spark plug wells really through me off.
I just started running in to this problem with the leaking windshield seal. As well the plastic clip in the middle to help hold it in place was cause water to get on to the engine. I was not getting the misfire code but the engine would hesitate, buck shut off and most of the time come bake on gone 55/65 mph to and from work. I finally got a code for it two to three weeks ago p2074. I have already replaced the tp sensor back in the spring when I was having the issue with major lose of power and bad ideal.
It can be a scary issue if it is happening while driving!
@@TonyCollumtheHOWTOHERO oh big time is when it happens with traffic behind me at the same speed. It’s 06 with almost 200k on it and going strong even though this came up.
Same problem with #2 coil. Rust on it. I've replaced it 4 times. 2005 Durango 3.7L v6. Only problem and always the same cylinder.
Thanks.
I'll look for that parts link.
Leaking cowl has caused me to pull my hair out!
My new engine cost 3000 but the check engine light is on flashing but I do have water getting into my hood of my car I live in Detroit so uk every weather we have in get
My Durango 3.7l engine has been fine but after a big rain it is misfiring now it also leaks where the windshield wipers are connected by a bolt
It’s a 2006
Yep. The cowl is a big problem on these year models. Water is getting on top of the spark plugs causing the misfire
@@TonyCollumtheHOWTOHERO yep I replaced all of them and the coils because they looked real old and bad. No not misfire siliconing the cowl today
I have an issue just like this with cylinder #8.
It seems to be a common issue. Do you think yours is from a leaking cowl?
Had the same issue
worst cowl design ever! I'm having the same problem and I see it as planned obsolescence by dodge
if the leak is real bad, you should look at replacing the intake seals so that water doesn't seap in and destrpy the motor. there's a great video of this on CZcams
in my case I had to buy a new cowl cause the old one was too brittle and damaged..but I also water proofed the area immediately to the right of the vent well on the passenger side and just left of the wiper bolt. there's a huge gap there that goes straight into the motor, again ridiculous design
the driver side is not as bad as it has the wiper motor mechanism
I used a 1/8 inch sheet of rubber and rubber washers around the wiper bolts..as some suggested, I also placed clear silicone on the part that sits on the windshield
another issue I had was with water coming into the door frame and finding our seatbelts soaked..I found out it was a plastic knob holding the top racks that had lost its seal. if you're having this problem, take your racks off and place a good amount of silicone around the base of this plastic piece of chrysler S.!
I need that but is out of stock 😪
Well that stinks
What is
i make a tray under so the water will run off the side to the ground instead of the engine
Glen Bailey I’ve thought about doing that as well. The hose fix has worked so far, but if it does fail I will try the tray. Thanks for sharing your experience.
You could’ve just replaced the engine for 6K. Prolly not a good idea to spend anymore money on that 200,000 mile Dodge engine.
Thanks for the feedback. I actually didn't spend any money on this fix. It was only water getting into the spark plug well from the windshield. Simple, cheap, and easy fix. Still running strong.
Alex caulking is cheapest
I realize your a southern fella But your going to have to help me to understand How your 'Wife" Let the Family Durango run "HOT" I've driven these Durango's in high heat in traffic with A/C on and it never came up past the normal operating temp like between 180 & 195/200 ish until the T-stat cycled these don't blow gaskets off till they are well above the 220 degree mark . Now if this was allowed to run HOT for extended period of time without concern well you get what you get or if the radiator was blocked or just poorly maintained ..But Bro your truck has Cowl drain's did you check them ? rain shower's don't get in plug holes BUT Dude I don't know what you do for a living but this term you used called Hydro-Lock Or Hydraulic is a term used in Drag racing when a cylinder fills with fluid and tosses the rod out the side of the block or lifts the entire blower manifold and all But that Hemi has about as much in common with your baby "Hemi" as Trump does with the truth NOTHING at all..It really sounds like you either parking your truck under tree's where a lot of debris has been allowed to get down into the cowl vents and clog the drains causing your water problem
Way to go - comparing engine troubles to Trump👍And talking down to someone for speaking differently than you. A man of tolerance you are!👌👌👌