ZR-1 Net Registry Forums - View Single Post

batchman · 11-05-2013

Wow I didn't see this thread until just now, but a couple years ago on the boss's 88 Z51 we had a very flaky problem that I thought was the ECM but it turned out to be the fuel pump wiring. Where the harness passes through the filler neck plate, the wiring went bad inside the molded strain relief.

I eventually found that smacking the strain relief with the back of a screwdriver could change the symptoms.

Hope that helps you. Took me a *lot* to figure that one out. Hope you're subscribed to this thread and find this before you burn a few C-notes like I did.

Cheers,
- Jeff

11-05-2013	#9
batchman Join Date: Jun 2009 Location: I live at Devens, one run at a time Posts: 454	Re: 89 z51 wont idle etc Wow I didn't see this thread until just now, but a couple years ago on the boss's 88 Z51 we had a very flaky problem that I thought was the ECM but it turned out to be the fuel pump wiring. Where the harness passes through the filler neck plate, the wiring went bad inside the molded strain relief. I eventually found that smacking the strain relief with the back of a screwdriver could change the symptoms. Hope that helps you. Took me a lot to figure that one out. Hope you're subscribed to this thread and find this before you burn a few C-notes like I did. Cheers, - Jeff