The Dreaded No Start

[WVZR-1]

Originally Posted by Tyler Townsley

Just put in neutral and see if it will start without depressing the start switch.

Tyler

Tyler you of course are correct but some/most will do it as directed and also get a short education of WHY it's there, for the several years I've posted it that way and for the reason I stated only two have commented about it, yourself and a very good friend from the service who is a professional truck driver. My comment isn't/wasn't intended for only the C4 Corvette but anything with the clutch operated safety switch. The quick surge forward or rearward if done "my way" and if it doesn't start is very educational, VERY! Most mowing machines come to mind for PTO safety when I think of clutch safety devices and many PTO's are bypassed also.

[scottfab]

Originally Posted by gbmidyear66

....snip...
Guess I will just clean the key and the ignition cylinder and be more observant of the presence of "Security" indicator and movement of voltmeter to narrow mine down if (when) it happens again.
....snip...

I'd suggest also having a "plan B" should it not be VATs related. Perhaps carry a short single wire jumper wire to go from the POS bat to the famous "purple" wire. This eliminates much and would help isolate.
Look at the next "no start" as an opportunity to isolate and find the root cause.

Here are a few links for more background on "No Start" things:
http://www.zr1netregistry.com/Inform...art-issue.aspx

http://www.zr1netregistry.com/Inform...ont-Crank.aspx

[tccrab]

Some would argue that my patented "Dreaded No Start Cure" is a last ditch problem solver, others would argue that this what should have been done by GM.
Whatever you call it, it has been proven to work.
One relay, some wire and a little time.
Problem solved.


'Crabs

[JThomas]

I had a similar issue with my '92 ZR-1, three years ago. When the car got hot (Up to temperature) and I parked it, it would not start again, right away. If it sat for a while, long enough to reelly cool down, it would start again. We ended up replacing the starter and all was well.

[Dynomite]

Originally Posted by tccrab

Some would argue that my patented "Dreaded No Start Cure" is a last ditch problem solver, others would argue that this what should have been done by GM.
Whatever you call it, it has been proven to work.
One relay, some wire and a little time.
Problem solved.


'Crabs

No arguments regarding your No Start Relay
I installed your Relay, Differential Drain plug, Eliminated TB Coolant and Air Induction, and Added Belt Tensioner Billet Aluminum Pulley as standard corrective measures to what GM started on both a 90' and 91' ZR1

Thanks Crabs

[Blue Flame Restorations]

Originally Posted by tccrab

Some would argue that my patented "Dreaded No Start Cure" is a last ditch problem solver, others would argue that this what should have been done by GM.
Whatever you call it, it has been proven to work.
One relay, some wire and a little time.
Problem solved.


'Crabs

Nice input, Tom

[tccrab]

Originally Posted by Blue Flame Restorations

Nice input, Tom

Thanks Brett, I sincerely appreciate it.
Coming from a guy like you with your skills, this is high praise indeed.
I am so not worthy.
You too, Dynomite. You guys are great.

TomC
a.k.a., Crabs

[Blue Flame Restorations]

Originally Posted by tccrab

Thanks Brett, I sincerely appreciate it.
Coming from a guy like you with your skills, this is high praise indeed.
I am so not worthy.
You too, Dynomite. You guys are great.

TomC
a.k.a., Crabs

Obviously, you've never seen me with a schematic. LOL Ask Tyler....

You do great work, tom.

[ghlkal]

Just FYI,

I thought I was having a clutch switch problem also. When I searched at some of the big parts houses, eg gmpartsdirect, their online catalog showed the switch in stock. I can't verify that as I didn't order one.

They may still be available if someone needs one.

Of course, you can find used ones too (eg, corvettenutz, etc)

[Bearly Flying]

I have recently began having problems with my 91 not starting, altho in my case it seems to be when the engine is cold , it won't start, once the engine is warm, it will start.
Battery tested out OK, I had another battery approx 1 year old I switched into the car, No difference.
When I turn the key, I can hear what I believe is the starter solenoid click with the clutch depressed. If I let the clutch out part way, there is nothing, no clicks from the solenoid. So I believe the clutch switch is working properly.
The security light does not come on while trying to start the car. So the VAT system shouldn't be at fault.
After repeated attempts at hitting the starter, it will engage enough to slightly rock the engine, a couple more cycles of the key and it will generally start normally.
I suspect it may be the contacts in the starter itself are arc'ed, but I thought I would check with the Experts to get your thoughts before diving into that Plenum for my first time.