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1989 Ford Bronco

Tiny
MSMARTIH
  • MEMBER
  • 1989 FORD BRONCO
Engine Performance problem
1989 Ford Bronco Four Wheel Drive Automatic 175k miles

engine and engine management system is brand new the idol is erratic engine lopes until warm then idles rough, acceleration when driving is terrible, could it be the o2 sensors
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Monday, April 13th, 2009 AT 4:15 PM

3 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
I would check the EGR for sticking open a bit and vacuum leaks. Does it misfire at all?
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Monday, April 13th, 2009 AT 4:18 PM
Tiny
MSMARTIH
  • MEMBER
  • 2 POSTS
Yes all that has been checked
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Monday, April 13th, 2009 AT 4:22 PM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
MAP sensor is usually the problem on the OBDI vehicles. But it must be missing for this to be true, is it?
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Monday, April 13th, 2009 AT 4:37 PM

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