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-   -   Multiple engine codes (http://www.jeepgarage.org/f77/multiple-engine-codes-22986.html)

hgb8956 05-09-2011 08:50 PM

Multiple engine codes
 
Hi all,
I have 04 Grand Cherokee 4.7L with multiple engine codes. Check engine codes P1499, P1495, P0136 and three additional codes in the enhanced DTCs P0622,p1282 and P1388. Starts fine, missing and after it warms up ASD relay starts clicking. From my reseach appears all these codes can be related to open or shorted circuits. Could this be traced to one cause such as power distribution box or PCM? :mad::mad::mad::mad::mad:

SvenskaJeepGuy 05-10-2011 01:45 AM

Re: Multiple engine codes
 
you dont have an srt, try these forums

http://www.jeepgarage.org/f51/

http://www.jeepgarage.org/f77/

Milous 05-10-2011 02:38 AM

Re: Multiple engine codes
 
A couple things to look at - check the harness that runs on the back side of the engine block for any sign of rub-through, also check the harness right off of the leak detection pump (harness as it enters main harness on frame). The LDP is located under the left quarter panel behind left rear wheel.

abbey45 09-09-2015 09:43 AM

Re: Multiple engine codes
 
did u ever find out what the problem was i have an 04 grand cherokee thats doing the very same thing i timed it an it starts running rough at exactly 1 min 33 seconds its mind blowing trying to get this fixed

Frango100 09-09-2015 12:15 PM

Re: Multiple engine codes
 
Quote:

Originally Posted by abbey45 (Post 1218800)
did u ever find out what the problem was i have an 04 grand cherokee thats doing the very same thing i timed it an it starts running rough at exactly 1 min 33 seconds its mind blowing trying to get this fixed

Do you have the exact same codes? This seems to have to do with the O2 sensors. They need to warm up first, before the PCM will use their signal for fine trimming the fuel. I would use a scanner which shows live data, to observe the O2 sensor voltage change and to check the fuel trims.


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