1988 Chevy Celebrity Backfiring

1988 CHEVROLET CELEBRITY
19,000 MILES
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BOLENS
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The car has about 190,000 miles on it. It was running fine no problems..and I parked it for like 2 hours. I come back and it starts up fine...but then I get out on the road and it starts bogging down and backfiring. More gas doesn't help it. I put it in 2nd gear which helped, barely though. The car will run fine when the engine is cool, but once it warms up it all goes downhill. The Crank Sensor was replaced. It also got a new Computer unit, O2 Sensor, and a new Ignition Control Module put in. None of those have fixed the problem. It only has problems once the engine warms up. It is a strong car when it behaves, never had troubles with it before. Hopefully someone can shed some light as to where the problem lies? Thanks guys.
Apr 19, 2012 at 11:57 AM
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HMAC300
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what engine an dscan for codes first and check fuel pressure to see what if any sensor is bad. don't replace parts hoping to fix the problem.
Apr 19, 2012 at 1:25 PM