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1997 Ford Thunderbird running rich

Tiny
MARKTYLR
  • MEMBER
  • 1997 FORD THUNDERBIRD
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 120,000 MILES
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
Friday, October 23rd, 2009 AT 11:33 AM

3 Replies

Tiny
RASMATAZ
  • 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.
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Friday, October 23rd, 2009 AT 11:41 AM
Tiny
MARKTYLR
  • MEMBER
  • 3 POSTS
Where is it located
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Friday, October 23rd, 2009 AT 1:23 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
I strongly recommend you bring her in this one can be a nightmare to fix
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Friday, October 23rd, 2009 AT 5:16 PM

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