Next time it refuses to start check fuel and spark immediately

Answered by rasmataz
68 questions asked

it does not have spark, fuel pressure is good. i lose the ground to the asd relay from the ecm.

Response from mlevens
3 questions asked

Have you tested the coil if it checks out -have the computer tested-

Answered by rasmataz
68 questions asked

yes i have tested the coil and replaced it. i have no power to the coil when it won't start. i just put another new computer in it today. i replaced the other one at the end of december. all the tests i did pointed to the computer being bad, but that was not the case.

Response from mlevens
3 questions asked

The ASD relay powers the coil

Answered by rasmataz
68 questions asked

i know it powers the coil. it seems like the ecm is sensing something and taking away the ground for the asd. i have already replaced the asd and fuel pump relay. when it will start i have a ground atn the red/ white wire when you try to start. it goes directly to the ecm. there is no ground uuntil you turn the key to start. which is the way it is supposed to be. i have tried all of the obvious stuff and replaced pretty much everthing. any more ideas.

Response from mlevens
3 questions asked

I am an electronics tech by trade, I have been assisting a friend with his Talon. I have bypassed the fuel relay,replaced the ignition switch (not the tumbler). then it occurred to me that I was going about it wrong, I should be looking at the system ground's. Started searching the grounds out, low and behold, they are not to be found??? I am a GM man, all of GM's grounds are on the motor. so this left me wondering. and here I am, on your site. My next move is simple, find the system grounds at the ECU, splice into them, then run a jumper directly to the battery (-) post. I believe our schematic shows them all. I will keep you posted.

Answered by tinbender59
0 questions asked