Question about Cars & Trucks
listen for a vaccum leak.also try disconecting bat for 5 min the reconnect and start truck and hold idle at 1500-2000 for 5 min. this resets and teaches computer to self adjust
Posted on Nov 16, 2008
SOURCE: bogs down at high acceleration
Sounds like a plugged catylic convertor, GM has a Special Policy adjustment that covers the catylic convertors for 10 years or 120,000 miles (190,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. This is for 2001-2002 models with 3.4L or 3.8L engines. If you have a 3.8L engine you want to get this fixed soon, I have seen people drive these things so long with the convertor plugged that they melt a hole in the plastic intake plenum where the EGR port comes into the intake behind the throttle body.
Posted on Nov 18, 2008
if it has a converter on it.....it may be stopped up, but before you replace it have the fuel pump checked, as it may not be getting enough gas at higher rpms. It will start and idle fine, but starve out when you press the pedal. Have you changed the fuel filter?That will cause the same problem.....
Posted on Jan 30, 2009
my 89 cutlass did the same thing....She would bog down ( when the service engine light came on)....Light would go off and she would run fine...Shop replaced fuel fiter and KNOCK SENSOR, runs great now, the service engine light stays off too. Ran a can of MG injector cleaner thru too.
Posted on Oct 15, 2009
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