81 running on c 6yl?

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May 21, 2005 | 09:01 AM

cj7tenn

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From: Fayetteville Georgia

81 running on c 6yl?

Hi, Im new to the forum, and to the vette world. I hope someone can help with my first problem.
The car was running fine, pulled into the garage one nite, the next evening, got in to take it for a ride and it sounds like its running on 6 cyl. Starts and idles fine, but no acceleration. very little backfire, very rich exhaust smell. New plugs, cap, rotor etc.
Im not sure what to look for as it was running fine. Next time it was started, it acted this way. Any ideas what to check would be appreciated.
Ron

May 21, 2005 | 10:17 AM

PhotoVette1

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From: Raleigh NC

Ignition module failure--or you changed the firing order--or a plug wire got too close to your exhaust manifold.

May 21, 2005 | 10:41 AM

CA-Legal-Vette

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From: Scottsdale Arizona

In addition to the above, if your computer system is still intact and functional, the above could be a symptom of any number of things from a failed thermostat to a faulty sensor.

May 21, 2005 | 11:07 AM

cj7tenn

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From: Fayetteville Georgia

Quote:

Originally Posted by PhotoVette1

Ignition module failure--or you changed the firing order--or a plug wire got too close to your exhaust manifold.

How would you go about checking for the ignition module failure?
thanks

May 21, 2005 | 01:08 PM

BigBlockk

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From: North Bend Ohio

The computer may have taken a bump on you and may be in "limp home" mode. Carburetor may have swallowed some garbage. Float stuck open.

BigBlockk

Later.....

May 21, 2005 | 04:38 PM

cj7tenn

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From: Fayetteville Georgia

I unhooked the battery and hooked it back up and all is fine.....

May 21, 2005 | 11:20 PM

tersian

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Quote:

Originally Posted by cj7tenn

I unhooked the battery and hooked it back up and all is fine.....

You effectively reset the computer. One of your sensors, or mixture control solenoid is going bad. If it starts to happen more often you may want to start troubleshooting your coolant sensor/oxygen/TPS etc.

Jun 18, 2005 | 12:08 AM

cj7tenn

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From: Fayetteville Georgia

this is happing all the time now, I dont know the sensors locations and the manuals and the zone isnt any help.. tersian, your email isnt up to date...email me please... rtdmonst1@hotmail.com...