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Not Running on all four...
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=5&t=60915		 Page 1 of 1
Author:  novacrd [ Sat May 28, 2011 10:03 pm ]
Post subject:  Not Running on all four...
My friends liberty isn't running on all cylinders. I used my handy dandy code reader and it showed the following:
P0302
P0203
P0201
P0203
he tried unpluging the number three injector and and he said there was no change in the way his liberty ran, does that prove that it's a bad injector? is it a big job to change one out? should they be replaced as a set?
My waranty is up in two weeks so I figured that I better be my involved in the up keep of my jeep so I told him I would try and help him with his (better to learn on someone else's eh :D )
Any input would be great
thanks
Author:  tjkj2002 [ Sat May 28, 2011 10:07 pm ]
Post subject:  Re: Not Running on all four...
Well P0302 is cylinder #2 misfire,why pull #3 injector connector?
Author:  novacrd [ Sat May 28, 2011 10:32 pm ]
Post subject:  Re: Not Running on all four...
I guess I could be mistaken, he had off the second on in from the fire wall (would that be two or three?)
Author:  BlackLibertyCRD [ Sat May 28, 2011 10:56 pm ]
Post subject:  Re: Not Running on all four...
novacrd wrote:
I guess I could be mistaken, he had off the second on in from the fire wall (would that be two or three?)


Number 4 is hard to see so still could be number 2, if under warranty, take to dealer.
Author:  GreenDieselEngineering [ Sun May 29, 2011 8:22 am ]
Post subject:  Re: Not Running on all four...
novacrd wrote:
My friends liberty isn't running on all cylinders. I used my handy dandy code reader and it showed the following:
P0302
P0203
P0201
P0203
he tried unpluging the number three injector and and he said there was no change in the way his liberty ran, does that prove that it's a bad injector? is it a big job to change one out? should they be replaced as a set?
My waranty is up in two weeks so I figured that I better be my involved in the up keep of my jeep so I told him I would try and help him with his (better to learn on someone else's eh :D )
Any input would be great
thanks


P0302 - Cylinder #2 misfire
P0203 - Injector #3 short circuit low side to battery, or open load or short low side to high side
P0201 - Injector #1 short circuit low side to battery, or open load or short low side to high side

Strange to have all those injector issues at the same time. Try running at idle and unplugging each injector one at a time to isolate the effects. Check the wiring as well, maybe soething rubbed through causing the issue. Changing out injectors is not bad at all.
Author:  novacrd [ Sun May 29, 2011 7:37 pm ]
Post subject:  Re: Not Running on all four...
Thanks for the advise. We'll see if we can sort things out and report back.
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