1993 corvette
Thread Starter
Intermediate
Joined: Aug 2012
Posts: 30
Likes: 0
1993 corvette
Yesterday I was driving 60 mph and the car cut off would not start after 10 minutes. I had it towed to my mechanic. It stated this morning but cut off again after 5 minutes and would not start. He says it is the opti spark but he did not check codes. Looks like the car shuts off after warming up. Any suggestions before I start buying parts.
Thanks much
Jim
Thanks much
Jim
Safety Car
Joined: Sep 2010
Posts: 3,752
Likes: 190
From: Indiana PA
If your guy is worth his salt. He will check codes. If he is REALLY worth his salt he will have a scan tool that can see the High Resolution and Low Resolution signals from the Opti-Spark. See if he can monitor those as the engine starts to run bad and quits. Then try to crank, see if you have those or not.
My ENTRY level Professional grade OTC Nemisys scan tool will do this.
Also what are you losing? Spark/fuel, etc...? What?
Just throwing Opti-Spark out there is BS. It can be a lot of things. Shouldn't take more than 1 hour to VERIFY your issue given its doing it often and easily repeatable. A little diag. goes a long way. Hold off on the ol' parts cannon.
My ENTRY level Professional grade OTC Nemisys scan tool will do this.
Also what are you losing? Spark/fuel, etc...? What?
Just throwing Opti-Spark out there is BS. It can be a lot of things. Shouldn't take more than 1 hour to VERIFY your issue given its doing it often and easily repeatable. A little diag. goes a long way. Hold off on the ol' parts cannon.
Thread Starter
Intermediate
Joined: Aug 2012
Posts: 30
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Thanks for the input. We are checking codes in the morning. No spark after the car has run for 5 minutes and has warmed up. I will give him you input on the opti-spark . I told him NOT to purchase any parts until we have done a full diagnostic. I have fired that parts cannon on a previous restoration, it gets painful.
Thanks for the guidance.
Thanks for the guidance.
Drifting
Joined: May 2012
Posts: 1,336
Likes: 15
From: Mechanicsburg PA
Central PA Events Coordinator
St. Jude Donor '12-'13
Agree with a thorough diagnostic - a common symptom may have an alternate solution.
Been there myself with the 93 last Summer - http://forums.corvetteforum.com/1582073051-post34.html
Been there myself with the 93 last Summer - http://forums.corvetteforum.com/1582073051-post34.html
Drifting
Joined: May 2012
Posts: 1,336
Likes: 15
From: Mechanicsburg PA
Central PA Events Coordinator
St. Jude Donor '12-'13
ICM - Ignition Control Module (front face/right side engine block)
IAC - Idle Air Control
ECM - Engine Control Module (main engine computer)
MAP - Manifold Air Pressure
TPS - Throttle Position Sensor
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Thread Starter
Intermediate
Joined: Aug 2012
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Note..the coil is attached to the module. As noted by by Bandit and 93Rubie having the codes checked was the key to the repair. The mechanic I had(note had) was going to put a new opti spark(distributor) on the car before I stopped him and had him check codes. thanks to this forum.. Car is running great.
Instructor
Joined: Jan 2005
Posts: 224
Likes: 2
From: Deerfield Beach FL
Note..the coil is attached to the module. As noted by by Bandit and 93Rubie having the codes checked was the key to the repair. The mechanic I had(note had) was going to put a new opti spark(distributor) on the car before I stopped him and had him check codes. thanks to this forum.. Car is running great.
Safety Car
Joined: Sep 2010
Posts: 3,752
Likes: 190
From: Indiana PA
Codes give you a place to start with. Glad to hear you got it going.
I suggest you get a FSM for your 93. Worth its weight in gold.
They have diagnostic flow charts for each code and such. Invaluable.
I suggest you get a FSM for your 93. Worth its weight in gold.
They have diagnostic flow charts for each code and such. Invaluable.
