Bigdogmooney Posted September 24, 2021 Report Share Posted September 24, 2021 Hello all, hopefully someone here is able to help me. Earlier this month my car threw a p0299 after Auto starting multiple times. While driving on my way home it went off. A few days later it came on again and lasted a few days before turning off. Tonight while driving I got the p0302 and instantly lost rpm, along with p0299 downstream fuel trim system to rich. Last year I had throttle body, pcm, and a wire replaced. This year somehow got metal in my transmission and had it rebuilt. It's an 18 gt with 105k. Could be but maybe it's not but every since I started using a gas station by house almost exclusively is when it started. As a realist I dunno if that's an actual cause or not. Quote Link to comment Share on other sites More sharing options...
5rebel9 Posted September 24, 2021 Report Share Posted September 24, 2021 These codes and title sound familiar... Did you post of this once before? IF SO , you just kept driving it or did you do anything about it? P0302 is misfire on cyl.#2. Depending on which motor(2,4 or 3.6) you are due for spark plugs. Could be a number of other possibilities related to getting power to that plug to "fire". The fuel injector for # 2 cyl. may also be sticking and dumping fuel rather than spraying. The P0299 is probably a faulty downstream O2 sensor. Quote Link to comment Share on other sites More sharing options...
Bigdogmooney Posted September 24, 2021 Author Report Share Posted September 24, 2021 No I just read this last night after I posted but yes same thing Quote Link to comment Share on other sites More sharing options...
5rebel9 Posted September 24, 2021 Report Share Posted September 24, 2021 1 hour ago, Bigdogmooney said: No I just read this last night after I posted but yes same thing OK. It is always most helpful to post year and engine size and if FWD or AWD. AND ... Welcome to the forum. Quote Link to comment Share on other sites More sharing options...
Bigdogmooney Posted September 29, 2021 Author Report Share Posted September 29, 2021 It's a018 3.6 gt AWD. I took it to the shop and they said I needed spark plugs, so I changed them out. I forgot to hook up the cam shaft sensor and a hose. So it threw codes p0390, p0345 and p2173. It reset itself and today it threw all of the same codes again Quote Link to comment Share on other sites More sharing options...
John/Horace Posted October 1, 2021 Report Share Posted October 1, 2021 Time to mark the coil on cylinder #2 and either put in a new coil, or switch it to another spot and see if code follows. After clearing codes again. How did plugs look, was #2 a mess with carbon ? Quote Link to comment Share on other sites More sharing options...
Bigdogmooney Posted October 9, 2021 Author Report Share Posted October 9, 2021 They all looked the same none more or worse. Some days it'll reset after one start up and turn off. Other days it takes a run through of a few tank fills to turn off. It'll also turn off and on during the same tank as well. I still have the original battery in it as well so thought I should probably change it. I just find it odd that for 2 weeks off and on it's been throwing the same exact codes and the original turned off. Quote Link to comment Share on other sites More sharing options...
5rebel9 Posted October 9, 2021 Report Share Posted October 9, 2021 So, have you tried running a can of Sea Foam Fuel system cleaner thru with a fill up of gas in the tank? Quote Link to comment Share on other sites More sharing options...
Bigdogmooney Posted October 9, 2021 Author Report Share Posted October 9, 2021 12 minutes ago, 5rebel9 said: So, have you tried running a can of Sea Foam Fuel system cleaner thru with a fill up of gas in the tank? I'll try it headed to AutoZone now Quote Link to comment Share on other sites More sharing options...
Bigdogmooney Posted October 12, 2021 Author Report Share Posted October 12, 2021 On 10/9/2021 at 4:40 PM, 5rebel9 said: I tried it and it still hasn't went off. But I have noticed that once my car is completely off and I sit for 5 minutes my dome lights won't turn on. I'll be replacing the coil pack and camshaft sensor later this week. Quote Link to comment Share on other sites More sharing options...
5rebel9 Posted October 12, 2021 Report Share Posted October 12, 2021 Sounds to me like a different problem altogether about the dome light. UNLESS you are having an electrical draw that's killing the battery. LOW battery state can cause a heap of engine drivability concerns. What kind of driving are you doing with the car? Short "hops" or more than 10 miles 1 way? Quote Link to comment Share on other sites More sharing options...
Bigdogmooney Posted October 12, 2021 Author Report Share Posted October 12, 2021 I drive Uber, I recently got a wiring issue fixed last year. The reason I say the battery is because it's never been changed since I've owned the car. In another post which o felt was unrelated; their car kept throwing engine codes and when the battery was replaced it stopped. But yes when the car completely shuts down and you hear the whirling sound, they won't come on unless I got the hazards or hit acc Quote Link to comment Share on other sites More sharing options...
Bigdogmooney Posted October 13, 2021 Author Report Share Posted October 13, 2021 On 10/9/2021 at 4:40 PM, 5rebel9 said: All codes have now cleared except the misfire, so I'll change the coil pack. They went away on their own Quote Link to comment Share on other sites More sharing options...
5rebel9 Posted October 13, 2021 Report Share Posted October 13, 2021 3 hours ago, Bigdogmooney said: On 10/9/2021 at 5:40 PM, 5rebel9 said: All codes have now cleared except the misfire, so I'll change the coil pack. They went away on their own Please repot back once you change the coil. 2late4u 1 Quote Link to comment Share on other sites More sharing options...
Bigdogmooney Posted October 29, 2021 Author Report Share Posted October 29, 2021 I changed the coil pack but I'm still having the same problem, while driving I got a real ruff idle until acceleration and then it would start again and shake the entire car. This is the second time it's happened. It is still the same code BTW Quote Link to comment Share on other sites More sharing options...
5rebel9 Posted October 29, 2021 Report Share Posted October 29, 2021 2 hours ago, Bigdogmooney said: I changed the coil pack but I'm still having the same problem, while driving I got a real ruff idle until acceleration and then it would start again and shake the entire car. This is the second time it's happened. It is still the same code BTW Sad to hear the problem persists. Please post exact P codes so members can "investigate" possibilities. There was another with these same codes, as I asked you before, that I'm pretty sure posted back that an intake valve seat in the head had fallen out of place. BIG job for repair. HOWEVER, "in depth" diagnosis" with a borescope thru the spark plug hole should be done to confirm(along with full electrical diagnosis to determine if computer/wiring to that cyl. is working. Along with taking out the downstream sensor and ohm's testing it. On a side note of O2 sensors, 100k miles is suggested replacement time for ALL O2 sensors. I had a bank 1 upstream acting up with the P0420 code (cat efficiency) and replacing all sensors fixed it and brought live data reading fuel trims back to proper and equal readings. Good luck and keep us posted! Quote Link to comment Share on other sites More sharing options...
Bigdogmooney Posted October 31, 2021 Author Report Share Posted October 31, 2021 (edited) I replaced the camshaft sensor since that was my original code for bank 2 and I still seem to feel a misfire. The same code persist p0302. In addition I have replaced all Sparks the coil pack to that particular spark. The rpm will not stay steady. Also when I took it to the shop for a diagnostic they said I wasn't getting fire to the cylinder Edited October 31, 2021 by Bigdogmooney Quote Link to comment Share on other sites More sharing options...
John/Horace Posted October 31, 2021 Report Share Posted October 31, 2021 Who changed the plugs. We’re the intake manifold gaskets replaced during the sequence. Extra air coming in from bad gasket can cause a code like this. It’s low mileage, but gasket can get pinched or damaged. A compression test would be useful on this cylinder. Wet test and leak down. Valve seat issue etc can cause misfire. injector firing needs a node light, although screw driver against housing and listening for clicking from activation can be done. Quote Link to comment Share on other sites More sharing options...
Bigdogmooney Posted October 31, 2021 Author Report Share Posted October 31, 2021 5 hours ago, John/Horace said: . I changed the plugs after I took it to a shop and all they said was that cylinder 2 didn't have any fire, so I changed all the plugs. The original p0299 eventually turned off and has not returned, prior to me going and getting a diagnostic. For a while it would run a tank and turn off for a tank. Now it just stays on, however the other day it turned itself off for a quick trip and returned. I did not change gaskets but did place a coil into that cylinder from 4 and it persist.i just did the screw driver test and I hear a steady clicking Quote Quote Link to comment Share on other sites More sharing options...
Bigdogmooney Posted October 31, 2021 Author Report Share Posted October 31, 2021 I just looked back into my codes and I did have a brief downstream O2 sensor warning Quote Link to comment Share on other sites More sharing options...
John/Horace Posted October 31, 2021 Report Share Posted October 31, 2021 (edited) With plug change it’s safer to change these gaskets out. They get compressed and don’t always seal as well on reuse, not pricy. https://www.rockauto.com/en/catalog/dodge,2018,journey,3.6l+v6,3440326,engine,intake+manifold+gasket,5424 If changing them out, good opportunity to do a compression test on #2. Remove fuel pump relay and proper test is all plugs removed. To do accurately can be finicky if you haven’t done one before. I hope it’s not a valve/cylinder head issue, but it’s possible. Injectors seldom go in my experience, clicking is good..means energizing so signal from ecm is getting there. The two upstream O2 sensors are critical for fuel mix and affect drive ability and fuel economy. Down stream confirm cats are working properly, so more emissions related. Misfire from unburnt fuel could cause this code. Some people automatically change upstream as a wear item at around 100k without waiting for failure codes. Fuel savings add up quick. NTK are same as oem sensor. I would confirm compression and swap intake gaskets first and see if goes away. Your ☎️. Edited October 31, 2021 by John/Horace 5rebel9 1 Quote Link to comment Share on other sites More sharing options...
Bigdogmooney Posted November 9, 2021 Author Report Share Posted November 9, 2021 A shop said that it had low compression in that cylinder and that it might be more suitable for the dealer so, now I'm going to be waiting another week out of work to get there until they diagnose it themselves Quote Link to comment Share on other sites More sharing options...
5rebel9 Posted November 9, 2021 Report Share Posted November 9, 2021 1 hour ago, Bigdogmooney said: A shop said that it had low compression in that cylinder and that it might be more suitable for the dealer so, now I'm going to be waiting another week out of work to get there until they diagnose it themselves Sorry to hear that. But you did about all that was possible without engine disassembly. Yup low compression will cause misfires, I hope it is just something in the cylinder head and not deeper. Good Luck and keep us posted! Quote Link to comment Share on other sites More sharing options...
Bigdogmooney Posted December 6, 2021 Author Report Share Posted December 6, 2021 The last place I went to recommended replace the whole cylinder head or try to find a shop that would do just a valve job. Also their might be an electrical issue seeing how I bought a completely new battery and it drained during the week and a half they had it that it wouldn't jump. I just called the bank and told them come get it. #problem unsolved Quote Link to comment Share on other sites More sharing options...
5rebel9 Posted December 6, 2021 Report Share Posted December 6, 2021 6 hours ago, Bigdogmooney said: The last place I went to recommended replace the whole cylinder head or try to find a shop that would do just a valve job. Also their might be an electrical issue seeing how I bought a completely new battery and it drained during the week and a half they had it that it wouldn't jump. I just called the bank and told them come get it. #problem unsolved Sorry to hear of the way this is ending. But looking back on all the reported troubles you've encountered while in your possession. I can't fault you. I wonder if this was a first build on a Monday morning or last build on a Friday vehicle? I hope you have better luck with your next vehicle! Quote Link to comment Share on other sites More sharing options...
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