1991 GMC Truck

Tiny
JMEACHAM
  • 1991 GMC TRUCK

Engine Performance problem
1991 GMC Truck V8 Four Wheel Drive Automatic

tbi 350 engine idle is too high and also revs up and down not giving any engine codes

Do you
have the same problem?
Yes
No
Sunday, May 30th, 2010 AT 8:42 PM

1 Reply

Tiny
OBXAUTOMEDIC
  • EXPERT
  • 3,780 POSTS

Hello,

Here are some possible causes.

Plugged Fuel Filter

Weak Fuel Pump

Vacuum Leak

Plugged Exhaust System

.

Was this
answer
helpful?
Yes
No
Please consider a donation if we helped you
Monday, May 31st, 2010 AT 8:18 AM

Please login or register to post a reply.

Related Engine Idle High Questions

Recommended articles