i have an 89 firebird formula with the tpi injection it will run fine drive down the road for about 30 to 40 mins and then shut down its getting fire but losing injector pulse what would cause this i have replaced the computer and the distributor and the fuel pump

20

Asked by Jan 15, 2014 at 09:57 PM about the 1989 Pontiac Firebird Formula

Question type: Maintenance & Repair

1 Answer

17,655

When it does it see if it is losing power or ground with a test light. The ECM/computer supplies the ground and the ignition switch supplies the power to the injectors. See if there is power on one wire and ground on the other.If you have power or ground on both wires there is a short in the harness usually in a connector. No ground bad ECM - No power start at the ignition switch.

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
658 Great Deals out of 39,376 listings starting at $2,995
Used Ford Mustang
678 Great Deals out of 38,414 listings starting at $1,963
Used Chevrolet Corvette
352 Great Deals out of 20,285 listings starting at $3,688
Used Pontiac Grand Prix
26 Great Deals out of 3,749 listings starting at $1,195
Used Chevrolet Monte Carlo
16 Great Deals out of 1,728 listings starting at $1,695
Used Ford F-150
3,381 Great Deals out of 204,925 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
6 listings starting at $5,995
1998 Pontiac Firebird Formula For Sale
2 listings starting at $7,995