Hi I am new here I need help please. I have a 4.0 and at first it was dieing while going down rd.So I changed the gas filter and thought why I was at it I would change plugs and cleaned the maf icu and tps. Well got it back together and no start and when did no idle. Then I put a scanner on it .code came out o2 sensor replace that and then had 12 codes .I turned it over today and now only 3 codes 1492 0107 1296 .the pcm said 5 volt.5.17 to cam sensor 2.6 at start. Map 17.7 mv tps .717v 8 volt to spark plug .I just don't know what's going on ...help plz
Problems with 2004 Jeep Grand Cherokee
- Thread starter jennifer2004
- Start date
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- Tags
- no idle ruff runing
LONGJP2
TJ Expert
Welcome, I also have a 2004.
Unfortunately, there's not a lot of WJ traffic on here, but we do have the 4.0 in the TJ.
I would have to look up those codes to provide any help.
Try reseating the sensor connections; and check your battery terminals.
Here's a link to a good WJ forum. You might try your question there also.
https://www.jeepforum.com/forums/wj-grand-cherokee-forum.310/
Unfortunately, there's not a lot of WJ traffic on here, but we do have the 4.0 in the TJ.
I would have to look up those codes to provide any help.
Try reseating the sensor connections; and check your battery terminals.
Here's a link to a good WJ forum. You might try your question there also.
https://www.jeepforum.com/forums/wj-grand-cherokee-forum.310/
I just did a head gasket in the neighbors 04 WJ. Man those four O2 sensors are a PIA.
What brand O2 sensor did you use?
-Mac
What brand O2 sensor did you use?
-Mac
Man tell me about it,they are quite the pleasure to replace
NOTE: The 4.0s like to use NGK o2 sensors since others have gone with different brands and still got codes, if needed i can provide part numbers!
Wasn't too bad imo since i was already replacing my cats, honestly the bolts were the biggest PITA since i could only turn my wrench 4 degrees at a time for the manifold to precat ......
Definitely recommend spraying your favorite penetrating fluid before the job and if you want start the jeep up for a moment to get things hot cause for me the sensors broke loose with no struggle on the manifold
Works like a charm 9 times outta 10, Spraying whatever rusty bolt with penetrant heating it up and shocking it by squirting some fluid and bam.............if that dont work its time for violence,What do i mean by violence you ask ? when you gotta whip out the hammer and grinder......or acetylene torch if you have one