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Oct 1, 2007 | 12:34 PM

eviltrekker

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confusing

just got the cps installed and last summer installed new wiring harnessess for glow plug and injectors, but started truck up and it still dies after 5 mins running.any suggestions on what could be the problem. wondering if cps could be bad,its brand new.

Oct 1, 2007 | 12:57 PM

Cuda_jim

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From: MICHIGAN

It could be a CPS...even new ones can go bad. How does it run until it dies? How does it die? suddenly or start missing and then die?

Oct 1, 2007 | 12:58 PM

Cuda_jim

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From: MICHIGAN

Are you getting any codes, CEL on?

Oct 1, 2007 | 01:31 PM

eviltrekker

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runs fine then starts missing then runs good then misses then dies and starts right back up.check engine light comes on when it starts messing up. dont have a code reader yet

Oct 1, 2007 | 01:59 PM

tjbeggs

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From: Silver Lake Dunes, MI

Sounds like under valve cover harness related. also check the main wiring harness where it lays over the drivers side valve cover. it could have a wire rubbed bare and touching the VC.

Oct 1, 2007 | 05:57 PM

eviltrekker

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also battery light is on had to jump start it
, think alt. might be bad would that also have something to do with it not running right

Oct 2, 2007 | 08:24 AM

tjbeggs

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From: Silver Lake Dunes, MI

it might but unlikely. I would get the alt checked out first then see where you stand though.

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Oct 2, 2007 | 10:30 AM

Cuda_jim

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From: MICHIGAN

Quote:

Originally Posted by eviltrekker

also battery light is on had to jump start it
, think alt. might be bad would that also have something to do with it not running right

Could be if the voltage is low enough to the IDM. It needs a lot of voltage to fire the injectors. It actually increases the battery voltage up to 115V DC. Low voltage in....low voltage out.

Check the connections on the alternator. The small wires on the top get abused from people laying on them. Wiggle them with the engine running and watch the volt meter....it shouldn't move.

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Oct 2, 2007 | 11:01 AM

caseydudem

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I have had some of those same issues and it turned out not to be a bad alt or battery, but that I had a bad ground some where. I would look at some of your wiring grounds. Have you put anyhting new on that had to be wired in? Just a hint from what I have experienced.