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LT1-LT4 Modifications 1993-97 Gen II Small Block V8

02 sensor causing backfire??

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Old Apr 18, 2008 | 05:55 PM
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NXPRSS
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From: CT
Thumbs down 02 sensor causing backfire??
hey guys i have a 93 T/A, and im ready to put it up for sale, but of course now it starts running like crap! anyways, the car is backfiring out the exhaust and idles pretty rough... i have long tube headers, and my 02 sensors are hooked up. there is no check engine light on, but could it possibly be that my 02 sensor is bad??> its really pissing me off! im suppose to go to a car show tomorrow with it to advertise the "For Sale" sign, but im gonna be embarassed pulling up with my car backfiring so bad...
the car doesnt feel like it has all the horsepower it once had...
any suggestions???
also, plugs, wires, and opti are about a year old.... thanks
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Old Apr 18, 2008 | 07:29 PM
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stfuad
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pull the sensors and bench test em. Otherwise I'd get the multimeter out and run down the electrical system.
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