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| 3.7L Idling Rough and Engine Light http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=3&t=82853 |
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| Author: | MooseIt [ Sun Aug 16, 2015 6:17 pm ] |
| Post subject: | 3.7L Idling Rough and Engine Light |
I have a 2007 jeep liberty limited, the engine light is on and idles rough, at around 60km/h it almost feels like the tranny is slipping or a misfire, I have replaced the plugs and am using a new coil pack to to swap each old one out one at a time to see if its just a bad coil, any ideas on what else it may be or where i should be looking. |
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| Author: | tommudd [ Sun Aug 16, 2015 8:52 pm ] |
| Post subject: | Re: 3.7L Idling Rough and Engine Light |
have you pulled any codes from it yet? That would help see what it would be |
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| Author: | PALiftedKK [ Sun Aug 16, 2015 8:52 pm ] |
| Post subject: | Re: 3.7L Idling Rough and Engine Light |
Welcome to LOST! Pull the code, and report back. |
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| Author: | MooseIt [ Sun Aug 16, 2015 8:56 pm ] |
| Post subject: | Re: 3.7L Idling Rough and Engine Light |
I dont have a code reader, i will see if one of my buddies do and report back as soon as i can |
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| Author: | MooseIt [ Fri Oct 30, 2015 4:23 pm ] |
| Post subject: | Re: 3.7L Idling Rough and Engine Light |
hey i finally was able to get the codes. P0300, P0306, P0038, P0138. and there are more issues now, like my tranny seems to be shifting hard going into 3 gear, auto tranny too, fuel mileage has gone down, still chugging at 60kmh, |
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| Author: | PALiftedKK [ Fri Oct 30, 2015 4:59 pm ] |
| Post subject: | Re: 3.7L Idling Rough and Engine Light |
I'd help, but when you take months to reply with codes, your only hurting yourself... Good luck. |
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| Author: | Mike1970 [ Sun Nov 01, 2015 7:45 am ] |
| Post subject: | Re: 3.7L Idling Rough and Engine Light |
p0300 is random misfire, p0306 is misfire cyl 6, p0038 can be read here http://www.engine-codes.com/codes.php?code=p0038_jeep p0138 can be read here http://www.engine-codes.com/p0138_jeep.html In short. You can have a bad coil pack in cyl 6. Or you can have a bad cat on that side. You can also have some other exhaust restriction. What I would recommend is that you read up on these codes. Put your new coil pack on cyl 6. I suspect however that there is something going on in your exhaust system. A clogged catalytic converter can cause your symptoms, as can any other exhaust restriction. |
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| Author: | WhitbyKJ [ Sun Nov 01, 2015 12:04 pm ] |
| Post subject: | Re: 3.7L Idling Rough and Engine Light |
I second the above. However random cylinder misfire can also be caused by idiotically washing your engine. Done this myself. The check for a clogged cat, use infrared to gun, or disconnect exhaust and see how it runs after. |
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| Author: | MooseIt [ Sun Nov 01, 2015 8:19 pm ] |
| Post subject: | Re: 3.7L Idling Rough and Engine Light |
sorry for it taking so long i went away on vacation and have been extremely busy with work since, this has been my first weekend off in 2 months. I thank those who have replied with tips. i have replaced the cyl 6 coil pack. and put new plugs on all around, its only been recently that my gas mileage went down, but my light has been on for awhile, would a back exhaust flow have a negative effect on how my tranny is shifting? i wouldnt think it would but im sure theres a way it could. i will have to replace my cat and probably both o2 sensors on that side and see what that fixes. |
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| Author: | WhitbyKJ [ Wed Nov 04, 2015 8:40 pm ] |
| Post subject: | Re: 3.7L Idling Rough and Engine Light |
You can check your 02 sensors with a 5 dollar volt meter. Check it out on youtube.. This can also tell you if you're cats are plugged. |
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