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

4,505

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 920
#2 dandyoun
dandyoun
Reputation 780
#3 Justin Hatfield
Justin Hatfield
Reputation 730
View All

Related Models For Sale

Used Chevrolet Camaro
282 Great Deals out of 38,302 listings starting at $1,250
Used Ford Mustang
364 Great Deals out of 44,400 listings starting at $1,000
Used Chevrolet Corvette
180 Great Deals out of 20,807 listings starting at $3,995
Used Ford F-150
2,702 Great Deals out of 211,804 listings starting at $1,000
Used Pontiac Grand Prix
28 Great Deals out of 3,715 listings starting at $1,100

Used Cars For Sale

2000 Pontiac Firebird Formula For Sale
8 listings starting at $4,995
1999 Pontiac Firebird Formula For Sale
4 listings starting at $9,900
1998 Pontiac Firebird Formula For Sale
3 listings starting at $5,900