1997 Ford Thunderbird running rich

1997 FORD THUNDERBIRD
120,000 MILES • 6 CYL • 2WD • AUTOMATIC
Avatar
MARKTYLR
  • MEMBER
  • 3 POSTS
rough running at all speeds . after resetting computer, car will run fine for 15-25 miles then returns to rough running. replaced one fuel injector and cleaned all others 10000 miles ago
Oct 23, 2009 at 4:33 AM
Advertisement
Avatar
RASMATAZ
  • ✓Experienced Mechanic
  • 75,992 POSTS
Running rich:

Could be a bad O2 sensor, excessive fuel pressure (bad fuel pressure regulator or plugged return line), leaky fuel injectors, dirty air filter or restricted air inlet, or a defective coolant sensor that prevents the engine management system from going into closed loop mode.
Oct 23, 2009 at 4:41 AM
Avatar
MARKTYLR
  • MEMBER
  • 3 POSTS
where is it located
Oct 23, 2009 at 6:23 AM
Avatar
RASMATAZ
  • ✓Experienced Mechanic
  • 75,992 POSTS
I strongly recommend you bring her in this one can be a nightmare to fix
Oct 23, 2009 at 10:16 AM
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.