I have a 99 pontiac grand am se 3.4L V6. The issue is that it starts and idles fine but as soon as I go to accelerate it just shuts off. It did have overheating issues but right after I fixed those it started doing this. I replaced the cam position sensor and also the engine coolant temp sensor and it didnt help. I was thinking of replacing the ignition coil packs and housi g but not sure if that would fix it. There are no check engine lights or stored codes .

Asked by Dec 23, 2015 at 04:28 PM about the 1999 Pontiac Grand Am 4 Dr SE Sedan

Question type: Maintenance & Repair

I have a 99 pontiac grand am se 3.4L V6. The issue
is that it starts and idles fine but as soon as I go to
accelerate it just shuts off. It did have overheating
issues but right after I fixed those it started doing
this. I replaced the cam position sensor and also the
engine coolant temp sensor and it didnt help. I was
thinking of replacing the ignition coil packs and
housi g but not sure if that would fix it. There are no
check engine lights or stored codes .

1 Answer

25

I would not suggest changing your coil packs unless the car is running rough. I would focus on the transmission control solenoid, when properly functioning it controls the engine idle to save gas as the car warms. Unfortunately it was found as a known defect when it malfunctions due to age, it stalls the car because it gives a wrong signal which lowers the engine idle below what is needed to keep the transmission clutch assembly from stalling the car. Since it is part of the transmission technically it will not light the check engine light when it begins to fail. I can not actually say this may be your problem since I am unable to review the work on your car but I can tell you that unplugging the solenoid will do no harm to your transmission since you are only disconnecting the communication between the transmission and idle controls. I would advise you to disconnect the plug from the solenoid and if the car stops stalling the solenoid needs replaced. It is to the right of the engine on the transmission facing you as soon as you pop the hood. I am confident this is most likely the culprit and it is not expensive to replace, it is not a transmission job but a solenoid so your local repair shop can do it if it is found to be bad. Unplugging it is actually the only way to test, if car still stalls then you have me stumped. Wish you well.

Your Answer

Add photo

Related Questions

Search Pontiac Grand Am Questions

Pontiac Grand Am Experts

#1 tenspeed
tenspeed
Reputation 7,610
#2 John Saffrahn
John Saffrahn
Reputation 1,600
#3 Tom Demyan
Tom Demyan
Reputation 1,410
View All

Related Models For Sale

Used Pontiac Grand Prix
30 Great Deals out of 2,871 listings starting at $900
Used Pontiac Firebird
12 Great Deals out of 724 listings starting at $3,990
Used Chevrolet Impala
521 Great Deals out of 31,726 listings starting at $1,450
Used Chevrolet Camaro
226 Great Deals out of 30,943 listings starting at $1,217
Used Ford Mustang
472 Great Deals out of 45,735 listings starting at $1,999
Used Chevrolet Malibu
948 Great Deals out of 79,664 listings starting at $1,500
Used Honda Accord
813 Great Deals out of 84,287 listings starting at $1,050
Used Toyota Camry
999 Great Deals out of 90,916 listings starting at $650
Used Nissan Altima
1,027 Great Deals out of 81,562 listings starting at $1,200
Used Honda Civic
657 Great Deals out of 88,603 listings starting at $995

Used Cars For Sale

2005 Pontiac Grand Am For Sale
140 listings starting at $2,500
2004 Pontiac Grand Am For Sale
309 listings starting at $1,999

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.