Dreaded No Start fixed (hopefully...)

[tccrab]

Sounds to me like a battery or battery cable problem.
When my No Start happened, jumping it did not make it start.
I'd bet dollars to donuts if you'd replace the battery and the cables the problem would go away.
Have you cleaned the battery terminals? A stiff wire brush is all you need, rough it up a little and knock off any corrosion.

Good luck!

TomC
'90ZR1 #792

[Locobob]

Been spending some quality time with my electrical service manual trying to get a handle on this. Assuming the 90 and 91 are wired the same how come you didn't splice into the cranking circuit (yellow wire) just before it goes into the starter enable relay? Looks like it's right under the steering column and would be a much more direct path than the fuse panel.

[95ZR1#418]

Whatever, TC-

You did a great job. Personally, I would have sold the car for scrap within hour 1...

[tccrab]

Originally Posted by Locobob

Been spending some quality time with my electrical service manual trying to get a handle on this. Assuming the 90 and 91 are wired the same how come you didn't splice into the cranking circuit (yellow wire) just before it goes into the starter enable relay? Looks like it's right under the steering column and would be a much more direct path than the fuse panel.

Actually, the manual make's it look all too easy.
I poked around under the drivers side and came to the conclusion that there wasn't all that much room under there to get at the wire and to splice into it.
The clutch safety switch (another place to get at the Crank voltage)is WAY up under there and I didn't want to take apart the entire dash and/or the steering column to get at the stupid wire.
I'd already had the passenger hush panel off and had seen the CRANK fuse and knew it was much easier to get at than any wire on the drivers side.
The path of least resistance is always a favored bet.

TomC
'90 ZR1 #792

[Locobob]

Also, where is the purple starter wire under the hood? I know it comes off the starter and goes into a smaller bundle but not sure where it goes from there. Don't really want to pull the plenum again to find it. Got any pics of the purple wire coming out of the harness?

[tccrab]

Originally Posted by Locobob

Also, where is the purple starter wire under the hood? I know it comes off the starter and goes into a smaller bundle but not sure where it goes from there. Don't really want to pull the plenum again to find it. Got any pics of the purple wire coming out of the harness?

LocoBob:
SpongeBob's cousin?

My digital cameras battery is dead, so can't get you a pic right now. Later today I'll get it charged and take a pic.

The purple wire is easy to find, remove the wire cover off of the ECM, it's held on by velcro, no bolts to take off. This exposes the main bundle going toward the motor. Open up the main bundle, you may have to cut some tape to open up the plastic sheath. There is only one #10 purple wire in the bunch.

It goes directly to the starter solenoid, but where it goes back into the car is anybody's guess. There's not a lot of room and there's a LOT of wires there.

TomC
'90ZR1 #792