Question about 1995 Ford Bronco
Ok, it sounds like that the timing is retarded and needs to be advanced. Now when you say revs up and down, is this happening only at idle? Do you happen to have a manual for your truck? If you do, remove the idle air control (IAC) valve and clean the inside of it out. It may be carboned up. With carb. cleaner, clean the inside of the throttle body out. You may see a bunch of black soot looking stuff come out of it. Keep spraying the carb. cleaner until it's comes out clear. Advance the timing 2 to 4 degrees, this will get rid of the "no take off from a dead stop" issues. Get a manual, so you can see how where the components I'm talking about are. Let me know how things go.
Posted on Aug 27, 2008
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Posted on Jan 02, 2017
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