1990 firebird formula 3.1l engine starts up and cuts off after depress gas pedal down

5

Asked by Dec 17, 2013 at 08:01 PM about the 1990 Pontiac Firebird Formula

Question type: Maintenance & Repair

after depress gas pedal down  have replaced spark plugs, wires ,cap , rotar
,ignition coil,ignition module stumpped please help engine only has 91000 original miles one owner

1 Answer

4,325

Sounds like a bad throttle position sensor (TPS). On your car it's mounted on the throttle body. If you're handy with a voltmeter, it's easy to check if the TPS is working correctly. It needs to show .55 V at closed throttle. The other possible fault is with the Idel Air Control (IAC) valve.

Your Answer

Add photo

Related Questions

Search Pontiac Firebird Questions

Pontiac Firebird Experts

#1 Samuel Moore
Samuel Moore
Reputation 910
#2 dandyoun
dandyoun
Reputation 760
#3 Justin Hatfield
Justin Hatfield
Reputation 730
View All

Related Models For Sale

Used Chevrolet Camaro
656 Great Deals out of 39,479 listings starting at $3,495
Used Ford Mustang
719 Great Deals out of 38,863 listings starting at $1,999
Used Chevrolet Corvette
381 Great Deals out of 20,344 listings starting at $3,688
Used Pontiac Grand Prix
27 Great Deals out of 3,785 listings starting at $1,195
Used Ford F-150
3,449 Great Deals out of 206,327 listings starting at $1,273

Used Cars For Sale

2000 Pontiac Firebird Formula For Sale
3 Great Deals out of 10 listings starting at $3,800
1999 Pontiac Firebird Formula For Sale
8 listings starting at $5,995
1998 Pontiac Firebird Formula For Sale
4 listings starting at $7,995