Question about 1992 Pontiac Grand Prix
1992 Pontiac Grand Prix 6 cyl 3.1. Loos of power and erratic idle. Replaced exhaust,IAT,air and fuel filters,plugs and wires,O2 sensor,ignition coil pack,throttle position sensor.Same problems exist.Any ideas would be greatly appreciated.
Spark plug gaps are very critical on computerised cars!! [some wont even start!]
distributor module may be breeaking down as temp rises they fail!
otherwise do compression check as it may have valve problems
also check plug leads & injectors aswell as the fuel pump pressure [ could bestarving for fuel]
Posted on Jul 18, 2009
Did you bleed the air out of the fuel injection rail? There is an air bleed valve on the rail on top of the engine. It looks like a shraeder valve you would find on a typical tire.
Posted on Sep 10, 2009
Im fixing what seems to be the same problem on my 92 grand prix try listening for a vacum leak when the engine is warm. my problem is the brake booster is leaking. when i come to a stop it almost stalls. i dont know if that will fix your problem but from my experience the grandprix's thats my guess. if im wrong look in the fuel injectors
Posted on Sep 30, 2009
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Posted on Jan 02, 2017
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