Nicho Posted December 11, 2020 Report Share Posted December 11, 2020 I posted a few months ago, but figure I would do a new post to see if maybe some fresh eyes can help. I have a 2011 Dodge Journey 3.6l. For the last year I have been having some issues and no answers. The problem is now getting worse and I am at the end of the road with my journey. My car will have random misfires in cylinder heads 2,4,6. Code P0300. Once we got a code for running rich (175?). No other codes, not for sensors or anything. The misfire was very intermittent and wouldn't affect driving really. Now the car is hard starting, smell of fuel, puffs of white smoke and vehicle actually stalls out while driving. We have changed the plugs, changed the lower intake manifold and gaskets. Changed injectors. All the wiring has been gone through. It has had fuel pressure tests, leak down tests and numerous scans. It has passed all tests. They by passed the fuel system to read data (all good). It was with my brother who is a dodge mechanic for 2 months and he finally said it needed to go BACK to dodge so they can hopefully get more in depth results. This is where it gets frustrating ... its obvious there is a problem (mechanic can phsycially see and feel it) but all data shows it is ok. The live data was sent to Chrysler Engineers and they have no solutions either. I have questioned left cylinder head (passed leak down test twice so told no), coils and sensors. But been told that the computer should show issues with these. What is the probability that the computer is glitching and missing it???? Dodge is good and don't want to charge me an arm and a leg for no answers but need something! Surely this cant be the only journey that has EVER had these issues??? Quote Link to comment Share on other sites More sharing options...
John/Horace Posted December 12, 2020 Report Share Posted December 12, 2020 CPS crank position sensor have been know to fail with out a code sometimes. Cause cylinder misfire codes. Fairly cheap wear item, oem is one to use on critical ignition items like this. Only $30 ish dollars. In 2011 there was issues I thought with cylinder heads on some 3.6 engines on the pick up. Makes you wonder. Quote Link to comment Share on other sites More sharing options...
Nicho Posted December 12, 2020 Author Report Share Posted December 12, 2020 I will ask my brother (also my mechanic lol) about that sensor. Yes they are prone to the cylinder head failing...and I have extended warranty left on it. Dodge says it passes leak down so not the problem. But I question this now with no other answers. Quote Link to comment Share on other sites More sharing options...
John/Horace Posted December 12, 2020 Report Share Posted December 12, 2020 Try running straight super for a few tanks after clearing codes. Ethanol winter gas is not great for some vehicles. Might be interesting if codes stop. Quote Link to comment Share on other sites More sharing options...
Nicho Posted December 12, 2020 Author Report Share Posted December 12, 2020 1 hour ago, John/Horace said: Try running straight super for a few tanks after clearing codes. Ethanol winter gas is not great for some vehicles. Might be interesting if codes stop. Funny you post this lol my car is at dodge and they called my brother and said car is not acting up now. But suggest draining fuel and adding new. He used to work for dodge thats why I have him working on it for me. So he will go pick up for me and do this. Totally frustrated Quote Link to comment Share on other sites More sharing options...
Nicho Posted December 16, 2020 Author Report Share Posted December 16, 2020 Ok so quick update since picking up my car from dodge my brother has reported NO issues with my car. It starts fine no smoke no misfire. While the car was at dodge they sent all live data to engineers and they couldnt see anything out of normal with my car even as it was acting up. But was told tonight they did do a reflash on my computer (for unrelated issues they said). But since doing so the car only had one hiccup and then stopped. Could this have been the problem all along ?? For this whole year of dealing with this all it needed was a software update?? My brother will drive the car for the week to see if anything comes up. But curious if anyone can tell me this may have been it?? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.