I have a 2002 Pontiac Grand Prix. It does not have any get up and go. When I
floor it, it bogs right down. I changed the fuel filter but it made it
worse. I had it put on a scope at two different places and nothing came up
because the check engine light is NOT on. Could it just need a tune up?
SF:
Hello. I think I can be of some help. A couple common things. 1- The fuel pressure
should be checked to see if that is the cause of your problems. 2- Mass Airflow
Sensors can also cause this problem but would have a code stored. 3-The most
probable cause by reading your condition is that the catalytic converter is plugged.
This is a very common problem. That also should have a check engine light with a
code p0420, but not always The good news is that GM has a special policy
adjustment for a failed catalytic convertor. It is under warranty for 10 years or 120k
miles. The special policy adjustment has a GM policy #05551. FYI, a catalytic
converter replacement job at the the dealer would normally cost $400-$700. Hope
this was helpful to you, SF
floor it, it bogs right down. I changed the fuel filter but it made it
worse. I had it put on a scope at two different places and nothing came up
because the check engine light is NOT on. Could it just need a tune up?
SF:
Hello. I think I can be of some help. A couple common things. 1- The fuel pressure
should be checked to see if that is the cause of your problems. 2- Mass Airflow
Sensors can also cause this problem but would have a code stored. 3-The most
probable cause by reading your condition is that the catalytic converter is plugged.
This is a very common problem. That also should have a check engine light with a
code p0420, but not always The good news is that GM has a special policy
adjustment for a failed catalytic convertor. It is under warranty for 10 years or 120k
miles. The special policy adjustment has a GM policy #05551. FYI, a catalytic
converter replacement job at the the dealer would normally cost $400-$700. Hope
this was helpful to you, SF
Other related articles:
Other related questions
My 2003 Pontiac Grand Prix 3800 V6
Dear JK: The car will turn over, run for a couple of seconds
and then shuts off. After about the 10th try it ran fine. My son
says it has been difficult to start for a week or two.
JK:
Hello and welcome,. This could be 1 of several problems. You could have a fuel
pressure problem(bad fuel pump, plugged filter), Leaking fuel pressure regulator
causing a rich condition- which would stumble and chug before it dies, or you could
have a theft system problem. If after it starts and stall, leave key on and see if the
security/theft light stays on or flashes-that would indicate a theft problem. While it is
acting up, will need to check these... MORE
Dear JK: The car will turn over, run for a couple of seconds
and then shuts off. After about the 10th try it ran fine. My son
says it has been difficult to start for a week or two.
JK:
Hello and welcome,. This could be 1 of several problems. You could have a fuel
pressure problem(bad fuel pump, plugged filter), Leaking fuel pressure regulator
causing a rich condition- which would stumble and chug before it dies, or you could
have a theft system problem. If after it starts and stall, leave key on and see if the
security/theft light stays on or flashes-that would indicate a theft problem. While it is
acting up, will need to check these... MORE
