Question about 1989 Chevrolet Caprice
1989 Chevy Caprice 5.0l TBI tries to stall when stopping or decelerating. Actually knocks badly and oil light flickers when exiting highway. Dies when shifting into drive or reverse, but idles fine in neutral or park. Drives fine with cruise control set. Cold start is fine, but once warm it starts acting up. I've replaced TPS, EGR, IAC, Coolant temp sensor, MAP sensor, fuel filter, pcv valve, o2 sensor, cap, rotor, spark plugs and wires, thermostat, radiator hoses, most vacuum hoses, radiator and water pump. Have brand new distributor, but haven't installed. All original with under 26k miles. Sat for years.Performed fresh oil change. Added Marvel Mystery Oil and ran 80 miles to clean out sludge. What's going on? Was told TCC maybe locking up and not disengaging. Would a tranny flush/ filter help?
What has happened more than likely, unfortunately, the internal piston seals on the servo controls have gotten hard and not usable after this period of time sitting still. The answer is to remove and replace all the seals inside the transmission. Sorry this is the answer, but that is from my 35+ years experience in trans. overhauls. You should not have to replace clutches and plates, also make sure there is no rust on the internal drums from sitting still.
Posted on Apr 15, 2014
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Posted on Jan 02, 2017
hi there, i had the same problem with my 98 astro van, and took it to the shop, the computer pumped out a mass airflow sensor, they replaced it at considerable cost lol, but the van now runs good
Posted on Jul 03, 2010
SOURCE: i have a 1990 chevy corsica lt 6cyl 3.1 multi port fi dis ignition. the problem is it starts and idles fine, but when i push the gas it dies. before i changed some parts it wouldnt even start. ive cha
You can manually test the egr valve by pushing up from underneath it and seeing if the spring loaded valve moves and re seats itself. If no, it's bad.
Posted on May 03, 2012
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