[gla8460421]

I have a 92 ZR1 and it wont crank at times? I have replaced the battery and checked the charging system which are all good. It will start fine and out of the blue not turn over. Wait 20 minutes and try a few times and start. Is there a clutch switch that needs replaced and if so where do I get one?

 

[racingvette]

The safety start switch off clutch pedal might be out of alignment so check that first.
You could jumper the 2 wires together to bypass the switch and see if problem goes away

Also maybe the VAT resistor on ign key is dirty and is out of spec when key or ign switch is colder

 

[HardcoreABN]

when it doesnt start, does it crank or just do nothing? need some more info please.

 

[-=Jeff=-]

It could be one of 3 things:

1) Clutch safety switch
2) VATS
3) Starter contacts

when it does not start it is only when the car is warm?

 

[JThomas]

I also have a '92 ZR-1 that had similar problems earlier this year, usually when the car was warm. It turned out the starter needed to be replaced. Once replaced, nor problems starting since. :thumbsup: