Help troubleshooting eng problem
Thread Starter
Instructor
Joined: Jun 2005
Posts: 107
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From: Cumberland Rhode Island
Help troubleshooting eng problem
Hi everyone
My 1992 LT1 Corvette was laid up for 3 1/2 months. I did start it twice and allowed it to come to operating temp during it's non use. I had a battery tender on it during this time. I think but I'm not sure if I disconnected it before starting it up. I took it out last weekend for the first time and it is running bad. No power and is popping out of the exhaust. I thought it may be the gas so I put in some octane booster and dry gas with injection cleaner. Still running bad. I am also getting smells like electric or plastic, hard to tell what it is but there is an odor. I ran the tank down to 1/4 and filled it with Sunoco 93 octane. I ran it and it still is the same. I don't have any lights on such as check engine or any other. All the gauges are reading correctly. My question is could I have blown the ECM and not get any check engine lights or any other symthoms? Thanks in advance for any suggestions or help. I don't want to buy an ECM unless I am sure that it is bad.....
Tom
My 1992 LT1 Corvette was laid up for 3 1/2 months. I did start it twice and allowed it to come to operating temp during it's non use. I had a battery tender on it during this time. I think but I'm not sure if I disconnected it before starting it up. I took it out last weekend for the first time and it is running bad. No power and is popping out of the exhaust. I thought it may be the gas so I put in some octane booster and dry gas with injection cleaner. Still running bad. I am also getting smells like electric or plastic, hard to tell what it is but there is an odor. I ran the tank down to 1/4 and filled it with Sunoco 93 octane. I ran it and it still is the same. I don't have any lights on such as check engine or any other. All the gauges are reading correctly. My question is could I have blown the ECM and not get any check engine lights or any other symthoms? Thanks in advance for any suggestions or help. I don't want to buy an ECM unless I am sure that it is bad.....
Tom
Le Mans Master
Joined: Feb 2000
Posts: 9,715
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From: Kempner Texas
Start with the easiest to do things first: spark plugs, plug wires for arcing to ground, fuel pressure (psi, holding steady, etc.)
Jake
Drifting
Joined: Jun 2010
Posts: 1,853
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From: Westerly RI
Thread Starter
Instructor
Joined: Jun 2005
Posts: 107
Likes: 0
From: Cumberland Rhode Island
Update
I ended up taking the car to a local macanic. He said the car is running on 5 cylinders. He thinks the distributor cap is cracked and is taking it apart to check it out. I will keep you posted......
Thanks again for all the help
Tom
Thanks again for all the help
Tom
Thread Starter
Instructor
Joined: Jun 2005
Posts: 107
Likes: 0
From: Cumberland Rhode Island
It turned out to be the water pump was leaking and it took out the opti-spark. So I just wanted to update this posting and hopefully it can help someone in the future. Thanks to everyone who helped with this problem.......
Tom
Tom
