wont start
Thread Starter
Cruising
Joined: Oct 2010
Posts: 13
Likes: 0
wont start
I have a 1993 corvette and yesterday I drove it all day with no problem, but today I started it and it ran for a minuite then died out. Now the car turns over but does not start and it smells like gas when I keep trying. I did look to see if there were any codes but the only thing that comes up is a H54, help!
Le Mans Master
Joined: Jan 2006
Posts: 5,620
Likes: 206
From: Orlando FL
You can start off at least checking for spark at the plugs and at the coil wire. Depending on your results, you can get additional help.
Do you hear the fuel pump run for 2 seconds when you turn the key? I would also check for fuel pressure regardless if you smell gas or not. Also just on a chance take a look at the vacuum line for the fuel pressure regulator and make sure fuel is not dumping out.
You may end up checking the Fuel Injector drive pulses to.
Hard to say where else to look without more information.
Do you hear the fuel pump run for 2 seconds when you turn the key? I would also check for fuel pressure regardless if you smell gas or not. Also just on a chance take a look at the vacuum line for the fuel pressure regulator and make sure fuel is not dumping out.
You may end up checking the Fuel Injector drive pulses to.
Hard to say where else to look without more information.
Safety Car
Joined: Jan 2004
Posts: 3,556
Likes: 13
Sounds like no spark
Who old is the Opti ?
http://www.underhoodservice.com/Arti...8_engines.aspx
how to test
http://www.mainstreamtopics.com/foru...p?showtopic=78
Who old is the Opti ?
http://www.underhoodservice.com/Arti...8_engines.aspx
how to test
http://www.mainstreamtopics.com/foru...p?showtopic=78
Last edited by vetteoz; Nov 26, 2010 at 10:12 PM.
Thread Starter
Cruising
Joined: Oct 2010
Posts: 13
Likes: 0
First off thanks for the replys! The weird thing is when I was about to start doing some of these sugestions the car started, but it runs for about ten minutes then cuts off. I can let it sit for a couple of hours and it will start right up and run for about five to ten minutes and then cut off. Any new sugestions?
Melting Slicks
Joined: Dec 2008
Posts: 2,772
Likes: 64
From: Mystic CT
First off thanks for the replys! The weird thing is when I was about to start doing some of these sugestions the car started, but it runs for about ten minutes then cuts off. I can let it sit for a couple of hours and it will start right up and run for about five to ten minutes and then cut off. Any new sugestions?
Le Mans Master
Joined: Jan 2006
Posts: 5,620
Likes: 206
From: Orlando FL
It is beginning to sound like a ICM (ignition control module) . It is a solid state device that is basically an amplifier and when goes bad can just turn off. It is attached to the front top right side of the engine. It can be sensitive to temperature or just have a mind of its own. They do just go bad on their own.
I am more inclined to believe it is not the coil because when defective usually don’t come back to life compared to a solid state device. Lots of ICMs get changed more often than coils.
I would also just check any pin connections at the connectors at the ICM, coil, opti and ECM.
I am more inclined to believe it is not the coil because when defective usually don’t come back to life compared to a solid state device. Lots of ICMs get changed more often than coils.
I would also just check any pin connections at the connectors at the ICM, coil, opti and ECM.
Melting Slicks
Joined: Dec 2008
Posts: 2,772
Likes: 64
From: Mystic CT
I am more inclined to believe it is not the coil because when defective usually don’t come back to life compared to a solid state device. Lots of ICMs get changed more often than coils.
Dave
