Died and will not start
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
With the ECM pulled in or unplugged, the pink/black injector wires are showing 8 ohms at every injector, and this with the battery connected or disconnected completely.
With the battery connected, ECM disconnected anf the Key ON, fuel pressure zero - the pump never comes on.
With the battery connected, ECM disconnected anf the Key ON, fuel pressure zero - the pump never comes on.
W/the ECM disconnected, you can get the fuel pump to run by installing a jumper wired in place of the fuel pump relay. Or you could charge the line w/the injector fuse pulled, then disconnect the ECM, install the injector fuses and watch your gauge...
Thread Starter
Instructor
Joined: Aug 2014
Posts: 173
Likes: 9
From: Denver Colorado
I have a reman'd ECM on hand....
Thread Starter
Instructor
Joined: Aug 2014
Posts: 173
Likes: 9
From: Denver Colorado
Ok, I ran the fuel pressure up with the ECM installed, injector fuses pulled, key ON
- turned the key OFF
- disconnected the battery (very important to do this before you remove the ECM)
- removed the ECM
- reconnected the battery-
- connected a fuel injector connector on each bank
- installed the injector fuses
- turned the key to ON
The fuel pressure did not drop ie: the injectors did not get erroneous power to them from another source.
I'm swapping the Eprom and going for it!
- turned the key OFF
- disconnected the battery (very important to do this before you remove the ECM)
- removed the ECM
- reconnected the battery-
- connected a fuel injector connector on each bank
- installed the injector fuses
- turned the key to ON
The fuel pressure did not drop ie: the injectors did not get erroneous power to them from another source.
I'm swapping the Eprom and going for it!
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
10-4. I think I would too. At this point, it seems you have done a solid job of proving that the ECM is at fault.
*A test of the harness seems to show that the harness is good
*A test of the fuel pressure drop seems to prove that only the ECM is causing your pressure drop (injectors to open).
Looking forward to hearing the outcome.
*A test of the harness seems to show that the harness is good
*A test of the fuel pressure drop seems to prove that only the ECM is causing your pressure drop (injectors to open).
Looking forward to hearing the outcome.
Thread Starter
Instructor
Joined: Aug 2014
Posts: 173
Likes: 9
From: Denver Colorado
Who hoo!
It started right up!
It is smoking like crazy though as I believe oil & fuel went out through the exhaust and it is literally dripping from the mufflers.
So I need to idle it wor a bit, change the oil & then take it out onto the freeway to burn off the junk in the pipes.
It started right up!
It is smoking like crazy though as I believe oil & fuel went out through the exhaust and it is literally dripping from the mufflers.
So I need to idle it wor a bit, change the oil & then take it out onto the freeway to burn off the junk in the pipes.
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