Diagnose this no-start issue
Thread Starter
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More Turbo
Joined: Sep 2002
Posts: 515
Likes: 1
From: Windsor, CO
Okay, I just checked the IDM on another truck and it fired right up. So, it looks like i can rule out the IDM.
So, now I can start testing the ICP and IPR
I replaced the #18 fuse which looks like its just for the Trailer charge system anyway. Still no start.
I also have another GPR that I am going to swap in, although I doubt that is it anyway.
So, now I can start testing the ICP and IPR
I replaced the #18 fuse which looks like its just for the Trailer charge system anyway. Still no start.
I also have another GPR that I am going to swap in, although I doubt that is it anyway.
Post Fiend
Joined: Dec 2010
Posts: 10,121
Likes: 3
From: Orrville, Ohio
Don't bother swapping the GPR. Just jump the big terminals with a big screwdriver if it isn't working. If it is working it won't spark, if it is dead, then you'll get a little spark when you make the connection.
Thread Starter
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More Turbo
Joined: Sep 2002
Posts: 515
Likes: 1
From: Windsor, CO
I'm leaning towards a bad IPR, but the test I see asks for the motor to be running during the test.
This has got to be a fuel delivery issue IMO. So, one of these sensors is the cause. Fuel bowl is full too.
Thread Starter
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More Turbo
Joined: Sep 2002
Posts: 515
Likes: 1
From: Windsor, CO
No smoke out tailpipe. Leads me to believe its not getting fuel at all.
Unhooked ICP. Full of oil too. Likely bad. Still no start. Batteries are getting low though. I'm jumping it with a Durango at the shop. Need to wait a little to let the batteries recover.
With ICP unplugged I get a P1280 now as well
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Thread Starter
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More Turbo
Joined: Sep 2002
Posts: 515
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From: Windsor, CO
Junior User
Joined: Oct 2006
Posts: 96
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Spring and fall here it can get below freezing and I have had as little as one out and it wouldn't start. When I bought the truck 15 years ago I would have said the same thing it. I took it in and the mechanic told me that(sounded crazy) then he change the bad one and the next morning it started no problem. He gave me the procedure for what ohms resistance values are suppose to be, where to check them in the harness and I have changed about 20+ since then and a timer or two as well. Some times they I give a high resistance in the harness, pull the valve cover and find the plug has vibrated loose too, check them right at the GP and their fine.
