Question about 2001 Pontiac Grand Prix

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I have a 2001 pontiac grand prix 3.8 QUESTION,

I have a 2001 pontiac grand prix 3.8 QUESTION, could a faulty EGR vavle cause a misfire, or to run rough?

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Only if it is leaking, u can check this by touching the valve with wet fingers when the engine is idling, if u hear a sizzle the valve is leaking

Posted on Jul 29, 2010

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Posted on Jan 02, 2017

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Would a bad torque converter cause a 2001 Pontiac Gran Prix GTP shake and try to stall while driving?


A faulty torque conv clutch solenoid sticking in the engage position can cause what your descibing and gm had a lot of solenoid problems

Sep 27, 2014 | 2001 Pontiac Grand Prix

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2001 pontiac grand prix cyl 6 misfire at idle only


have the fault codes read and replace faulty unit/sensor.

Apr 08, 2013 | 2001 Pontiac Grand Prix

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My 2001 grad prix stumbels at acceleration once in awhile and in park sometimes there is no engine codes and i've changed pretty much everything plugs wires coils fuel filter and i even cleaned th


You did oxygen sensors at 100,000 miles

No exhaust leaks

No intake or evap leaks

Changing parts doesn't answer the question
Do you have ignition misfires

Egr problems

Mar 13, 2013 | 2000 Pontiac Grand Prix

1 Answer

96 pontiac grand prix se 3.1 service engine light is on and flashing. car runs bad. sometimes it has no power to get up an go. goes through alot of gas and smells of fuel bad. had it put on computer all...


clear the codes run engine and see what codes come back up egr valve that could just need a clean, ignition coil and module that could be just because of the egr valve, misfiring could be the spark plug or lead on number 3, check clean all spark plugs, check clean or replace the air filter and check for vacume leaks.

Jul 29, 2017 | Pontiac Grand Prix Cars & Trucks

1 Answer

Grand am 2001 2.2 engine what can cause an excess of nox gases


A FAULTY EGR VALVE NOT OPENING WILL CAUSE THAT PROBLEM.

Jul 10, 2010 | 2001 Pontiac Grand Am SE

1 Answer

I ran a scanner on my 2002 pontiac grand prix 3100 V6 and it reads out as multiple misfire i already changed the spark plugs,what could the problem be?


A code “multiple misfire” may mean that one or more of the following has happened:

•Faulty spark plugs or wires
•Faulty coil (pack)
•Faulty oxygen sensor(s)
•Faulty fuel injector(s)
•Burned exhaust valve
•Faulty catalytic converter(s)
•Stuck/blocked EGR valve / passages
•Faulty camshaft position sensor
•Defective computer

If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.

Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code. The underlying cause is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold or unmetered air getting past the airflow sensor, or an EGR valve that is stuck open.

Feb 01, 2010 | 2002 Pontiac Grand Prix

1 Answer

When accelerating veh runs rough


YOUR IGNITION SYSTEM NOT WORKING PROPERLY.CLOGGED OR DIRTY FUEL INJECTORS.FUEL PRESSURE LOW RESTRICTED FUEL FILTER OR FAULTY FUEL PUMP.HAVE IT SCANNED USING A DIAGNOSTIC SCANNER TO SEE IF EGR AND TPS IS WORKING.THEY WILL ALSO CAUSE CAR TO RUN ROUGH.

Oct 30, 2009 | 2001 Pontiac Grand Prix

1 Answer

Rough idle


some times , the egr valve will hang from carbon causing it sound like ahole in the muffler when snap the throtel try tapping the egr vavle with the plastic end of screw driver or remove the egr and clean out the carbon and replace the gasket

Jan 09, 2009 | 1994 Pontiac Grand Prix

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