I have a 1991 Chevrolet Caprice with a 5.0 T B I engine.The car has less than 70000 miles on it and has been well maintained. My problem is this... the car starts good and idoles smooth even in below 0 temps, but once the engine reaches full opp temp and I put a load on it /ie starting out from a stop, accelerating up hill ect. the car cuts in and out random misfire all 8 cylinders cut in and out.this only seems to happen once the computer takes over engine operation. when the car is cold it doesnt miss a beat!. so far to fix the problem I have replaced the T.P.S. sensor, the fuel filter,the coil, the ignition module, the entire distributer, all spark plugs and wires. the O-2 sensor.the main PCM computer, the ignition switch and all wiring harnesses from the steering collem to the ignition system.the compression is good and the timing chain is tight but the problem persists! I am at my wits end and I need some new ideas on how to fix the problem. the fuel pump pressure checked out to
2007-01-25
01:29:24
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17 answers
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Lots of money but no sense
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Chevrolet