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1992 Ford Bronco idles really high

Tiny
SPDFRK33
  • MEMBER
  • 1992 FORD BRONCO
  • V8
  • 4WD
  • AUTOMATIC
  • 192,000 MILES
Hi I own a 1992 ford bronco and for some time it has been acting up it nidles really high sometimes it runs smooth but other times it stalls on stop and go I also have noticed that the abs and brake light has been starting to turn on, before the check engine light use to turn on, but no longer, could it be the map sensore or what suggestions do you have I am changeing the pcv and if it comes down to it might look in to changeing the map sensore has a new tps sensore
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Wednesday, December 31st, 2008 AT 2:18 AM

2 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,170 POSTS
Hi:
First, if the brake light is starting to come on, make sure the brake fluid is full. As far as the engine, if you had an engine light coming on, there will be a code stored in the computer and scanning the computer will identify the problem. Most nationally recognized parts stores will scan it for free. As far as the MAP sensor, I question that. I am more inclined to believe it has something to do with the throttle position sensor or idle air control. Make sure there are no vacuum leaks and the carb or throttle body is tight.

Let me know what you find.
Joe
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Sunday, January 4th, 2009 AT 2:12 PM
Tiny
TRAVIS650D
  • MEMBER
  • 8 POSTS
I had similar problem with my 91 bronco, it wouldn't pass emissions because it idled too high. I had already replaced the Throttle Position Sensor and that didn't fix it. Even though the code reader said Tps Sensor failure. But then I replaced the O2 sensor and believe it or not that fixed the problem. Maybe try that? My O2 sensor was pretty easy to get to and I didn't need a special socket to remove it. Good Luck.
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Saturday, January 17th, 2009 AT 10:00 AM

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