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1988 Ford Mustang MAF conversion

Tiny
FORDDRIVER22
  • MEMBER
  • 1988 FORD MUSTANG
  • V8
  • 2WD
  • MANUAL
  • 132,000 MILES
I just did a speed density to maf conversion and now my car runs super rich for about 15 minutes until it warms up, after it warms up it is fine. At first I thought it was just the new computer learning the fuel curve but now it is acting like the o2 sensors are unplugged until it warms up. HELP!
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Saturday, December 13th, 2008 AT 3:25 PM

1 Reply

Tiny
BLACKOP555
  • MECHANIC
  • 10,371 POSTS
The o2 sensors are supposed to seem like they are unplugged untill the vehicle warms up. They ahve to be a certain temperature before the computer will read any readings from the sensors.

Be kind of hard to know what is wrong sice I dont know what kind of setup you went with and how it was installed.

First check for vaccum leaks.
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Saturday, December 27th, 2008 AT 9:27 AM

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