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1988 Ford Bronco Idling Problems

Tiny
SWEENEY76
  • MEMBER
  • 1988 FORD BRONCO
Engine Performance problem
1988 Ford Bronco V8 Four Wheel Drive Automatic

The vehicle has smooth to rough idling when in park. When the vehicle is put in drive it wants to lunge with your foot on the brake almost stalling the vehicle. Iac, coolant temp sensor, ecu, have been replaced. Fuel pressure was tested reading around 40psi. Any thoughts?
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Wednesday, November 11th, 2009 AT 6:45 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Do the RPM's go up causing the lunge?
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Sunday, November 15th, 2009 AT 12:02 AM
Tiny
SWEENEY76
  • MEMBER
  • 3 POSTS
Yes the RPM's do go up.
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Sunday, November 15th, 2009 AT 5:59 PM
Tiny
SWEENEY76
  • MEMBER
  • 3 POSTS
Anyone have any Ideas also we have tried a new MAP, TPS sensor and can not find any vaccum leaks. We have also replaced the ECU. Any ideas?
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Friday, December 4th, 2009 AT 3:37 PM

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