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!
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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