1992 Buick Century 92 buick backfire, hesitation, stumbling

1992 BUICK CENTURY
120,984 MILES • 3.3L • V6 • FWD • AUTOMATIC
Avatar
DIYBOB
  • MEMBER
  • 1 POST
When starting out the car will backfire, hesitate, stumble, then feels like the car is flooded, if I put the pedal to the floor it will take off after backfiring srmbling and ETC. There is no check engine light. It's not as severe in the mornings but gets worse. I have changed the fuel filter, cleaned the MAF and throttlebody, just seems to get worse. If I floor the pedal while in Park it revs normal.
Sep 17, 2014 at 6:31 PM
Advertisement
Avatar
JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
Even though there is no check engine light on, have you checked for codes? The OBD1 systems sometimes don't set the light.

Also, when was the last tune up? Have you checked fuel pump pressure?
Sep 17, 2014 at 8:12 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.