1992 Ran fine last night,now it turns over but wont start? Im lost i've doen everything I know to do.

HELP!

 

And everything you know to do/have done is what exactly?

 

Probably get more hits in the tech section also

 

Does it have spark (timing light works here)?
Is there fuel pressure at the Schraeder valve?
If so, are the injectors firing?

 

I put a new coil on it because Advance didnt have an ICM so i was justn hoping... lol

I had my son spray starter fluid in the throttle body as I tried tried to start itand it fired and ran for a sec so that tells me it has spark I think.

Going to check schraeder valve now.If there is no pressure there is it the fuel pump?

 

Likely! But look at spme fuel pump related items first

I believe pump has relay/fuse

How clogged is filter? that's a lomg shot

Just had my TPI camaro do the same thing...it was the pump

 

I checked the schraeder valve and it sprayed out fine with lots of pressure,so i tried the starter fluid in the throttle body and nothing, pulled the first plug wire off on the pass side and put a screwdriver in it and held it to a manifold bolt and got no spark because i have no timing light...GRRR%$#@!!

 

92 corvette for sale !

 

If you check for spark by pulling a plug wire, it's a good idea to keep a spark plug attached so you don't damage the ICM.

 

Most auto parts places can test your ICM.

 

Thanks I'm still hard at it.

 

ICM tested fine it started today ran for 10 minutes than shut off and wont start again??

Tested icm
Replaced coil,temp sensor,fan relay,thermostat.

 

The most expensive way to repair a car is to start replacing parts without confirming that the original part is defective! For the life of me I cannot understand why people do this.
When the engine will not start, you need to check what the cause is.
Engines require spark and spark at the right time, they require fuel and air and in the correct ratio. Use a timing light to determine if you have spark and spark at the right time while cranking. Put a fuel pressure gauge on the shrader valve at the end of the right fuel rail and see if you have 36-45 psi of pressure and when you turn the ignition off if the pressure holds up for a long time. Rapid pressure decline indicates leaky injector/s, defective check valve in the fuel pressure regulator. Connect a noid light available at parts stores across an injector plug, it should pulse during cranking showing the injectors are being pulsed by the ECM. Buy a GM service manual for your car and go through the diagnostics section which will allow you to LOGICALLY determine why it won't start and then what to do about it. The service manual and timing light, and fuel pressure gauge , and the noid light will likely cost less than the parts you replaced and which did not repair your car.
Also, this is not the correct forum for asking technical questions, this thread belongs in C4 Tech.