engine problems please help
Post Fiend
Joined: Oct 2003
Posts: 5,903
Likes: 1
From: MICHIGAN
Maybe something is loose. Check the tin nut on the IPR, it can get loose. It can be stripped very easy, just snug it up.
Here is a great picture of the IPR and more...(Green Beans go to TJBEGGS)
Click on it for a larger picture.
The wire harness that goes over the driverside valve cover can rub through and cause an intermittent. It is loosely taped in red. Try shaking the harness when it's acting up.
Here is a great picture of the IPR and more...(Green Beans go to TJBEGGS)
Click on it for a larger picture.
The wire harness that goes over the driverside valve cover can rub through and cause an intermittent. It is loosely taped in red. Try shaking the harness when it's acting up.
Senior User
Joined: Apr 2003
Posts: 199
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Im surprised no one responded with the obvious .......... its your IDM Injector drive module ..... usually when it goes bad it fires only on 4 cylinders or half a bank ...... if only one injector was firing..... trust me your truck would never start much less run.......... Good luck.
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Senior User
Joined: Jan 2004
Posts: 390
Likes: 0
From: northern Maine
Im surprised no one responded with the obvious .......... its your IDM Injector drive module ..... usually when it goes bad it fires only on 4 cylinders or half a bank ...... if only one injector was firing..... trust me your truck would never start much less run.......... Good luck.
if it that would it run good at idle, and at 2000 rpm even under power for 200 feet or in netrual for 30 seconds??
Post Fiend
Joined: Oct 2003
Posts: 5,903
Likes: 1
From: MICHIGAN
The IDM, Injector Driver Module, is located on the driver side fender.
IDMs usually stay dead, not intermittent. You can check it for water intrusion, remove it from the fender and shake it, listen for liquid shloshing around in there. Check the wire connector too.
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Senior User
Joined: Jan 2004
Posts: 390
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From: northern Maine
ok thanks I will pull it and see if it wet. if they go dead and stay dead then that must not be my problem. I had a frend put his machine on it to pull codes, and his said same as mine, unable to comunicate with pcm check conections. he also has a psd 96 but he said he stumped on my truck. his machine works good on his truck,
Posting Guru
Joined: Nov 2003
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From: THUNDER BAY
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Senior User
Joined: Jan 2004
Posts: 390
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From: northern Maine
Wow Thanks, I will check that when it stops snowing, we in a blizzard. expecting 24 to 28 inches. Thanks again. Hay here a stupid question, might a blown fuse cause my problem. if fuse is somewhere in truck? which one ??? have to check all my fuses if i can find them all. where the lighter fuse? under dash or engine compartment? If it ever stops snowing here it will be nice, my 66 year old body does not like winter.
Posting Guru
Joined: Nov 2003
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From: THUNDER BAY
The fuse is under the dash on the back of the cover for the fuses it will tell you what one is for the lighter and such that is not what is making your truck do what it is doing but will not allow the scanner to communicate with the pcm if it is blown
You need to pull the codes what kinda scanner does your friend have?
Take the chip out that could be the problem as well
You need to pull the codes what kinda scanner does your friend have?
Take the chip out that could be the problem as well
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Senior User
Joined: Jan 2004
Posts: 390
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From: northern Maine
ok i will take the chip out, his scanner brand ??? mine is a actron super scanner. obd 2
thanks for all the help. all you guys, greately appreciated. I will let you know what happens when i get a chance to work on it again.
thanks for all the help. all you guys, greately appreciated. I will let you know what happens when i get a chance to work on it again.
Last edited by shendoa; Mar 1, 2009 at 07:31 PM. Reason: spelling
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Senior User
Joined: Jan 2004
Posts: 390
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From: northern Maine
found problem i think very weard, fuel line was pinched from selector valve to fuell pump (lift pump) It would allow engine to idle but at 2000 rpm after few minutes it did not have enough fuell to run good. well any ways I have lots new parts that would probably go bad in near future. Guess that one more thing to look for when engine runs bad. MY PSD now back to running very good, Thanks guys for the help.
