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1991 E150 RUNNING RICH AND NO POWER

Tiny
CLOUGHPAINTER
  • MEMBER
  • 1991 FORD F-150
Ok, I have a 91 E150, 4.9, C6 with 240,000 miles. After the engine warms up the check engine light comes on and the engine runs rich(light black smoke from tailpipe).I checked codes and got a 112,117,122,126,327,513,552, and 565.I have replaced the coolant temp sensor. Fuel pressure tested at 50lbs. Idle air tested checked and cleaned. The engine seems to rev fine when in park, but when put in drive, it will barely move. It will go and pick up speed, but only when barely touching gas.I am at the end of the rope. Any help would be great.
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Friday, June 29th, 2007 AT 2:05 PM

2 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Have you checked for a clogged converter yet?
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Friday, June 29th, 2007 AT 5:37 PM
Tiny
CLOUGHPAINTER
  • MEMBER
  • 2 POSTS
It does not act like that, it seems to breath fine, but I will check it out with a vac gauge.I had a coverter issue(89 F250) earlier this year that short of taking the coverter loose, no body would have guessed.
I am kind of leaning towards a computer. The codes point to too many issues that do not relate. The codes I listed were erased and recycled during two seperate test. Every time coming back the same.
I am going fishing tommorrow, but will look into the converter issue further on Sunday.
Thanks for the input!
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Friday, June 29th, 2007 AT 6:41 PM

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