92 Vette Stops Running Intermittently HELP!

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Dec 13, 2012 | 11:16 PM

nickgost

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Instructor

Joined: Jun 2012

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92 Vette Stops Running Intermittently

My 92 vette just killed itself today while I was driving. After coasting to the side of the road the car wouldn't start. The car turned over fine, and I believe I could hear the fuel pump running when the key was first turned on. After it sat for 10 min or so it started right up like it was nothing. As I drove away i drove away it sputtered and then it was fine. Yes I have plenty of gas... I can't get the car to have the problem occur again. It runs like nothing ever happened... Some problems with the car right now are a slight coolant leak (looking for it), oil pressure gauge works intermittently, analogue oil temp gauge doesn't work (digital works), and after a bit of a highway drive the service engine soon light comes on, then turns off before i can read the code. I think that's it. If anyone has any ideas they would be much appreciated. I'm willing to dig as deep as i have to if that means my car will actually drive.

Last edited by nickgost; Dec 13, 2012 at 11:26 PM.

Dec 13, 2012 | 11:48 PM

leesvet

Safety Car

Joined: Apr 2011

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well, you have to do the basics and start gathering info in order to paint a picture that shows you whats wrong.....

start with fuel pressure.
verify spark at different wires.
Look at the battery connections for loose cables, loose grounds. Check the harness grounds by the filter.

Most any sensor with a loose plug can stall an engine. Go thru what you can get to and check for loose plugs...

best guess is fuel filter. They will plug and kill the motor, then after sitting for a while the crud settles in the filter can and lets fuel flow again....for a while. Same thing will happen soon IF thats the problem. Pressure test will confirm.

Dec 14, 2012 | 12:06 AM

nickgost

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Yes I agree that the fuel filter could be slightly clogged, but it runs too well otherwise. I don't think the problem is in the ignition system. I don't think it's a loose ground either because the car starts again after a few without moving. I feel like its electrical... I will check out all of the above though.

Last edited by nickgost; Dec 14, 2012 at 12:13 AM.

Dec 14, 2012 | 01:10 AM

desertmike1

Melting Slicks

Joined: Aug 2008

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From: Palmdale CA

check codes;

http://tech.corvettecentral.com/2011...trouble-codes/

Dec 14, 2012 | 01:07 PM

nickgost

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Ok. So i just pulled the codes off the car and got
1: C12 ( no codes)
4: H16 ( distributor Ignition system low resolution pulse) My opti-spark is less then 6 months old
9: H83 (???) i cant seem to find what this code means

any ideas?

Dec 15, 2012 | 12:03 AM

c4_4ya

Pro

Joined: Dec 2000

Posts: 555

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From: RDU NC

Just a thought; my 92 was running great, then no start. Wait a while, start right back up. Have you replaced the ICM? Before you do, check the connector to the ICM. I put 2 on mine, and even though I don't remember the codes, I do remember "low resolution". I used something small to "spread" the metal prongs inside the ICM connector so I knew there was good contact, not a single hiccup since. Good luck!

Dec 15, 2012 | 12:14 AM

James93LT1

Drifting

Joined: Oct 2004

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From: Hawaii

http://www.youtube.com/watch?feature...&v=lFCjaz6zHfc

http://shbox.com/1/4th_gen_tech2.html#opti_test

Dec 15, 2012 | 12:29 AM

desertmike1

Melting Slicks

Joined: Aug 2008

Posts: 2,082

Likes: 50

From: Palmdale CA

DTC 83 - TCC PWM Solenoid Circuit fault (Transmission code)

I'm providing a link for Ignition system description, and trouble shooting.. Start at 13:15 for code 16 explanation and trouble shooting.

http://www.youtube.com/watch?v=lFCja...ature=youtu.be