What can I do to fix my 1988 Ford Bronco xlt with a 351 engine that has rough idle and loss of power when in drive?

4.0l Engine loss of power. Garage has no idea. - Ford Explorer and ...

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May 17, 2010 - 19 posts - ‎11 authors
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I would rebuild the carb or clean it real good

I Have a 1999 ford f150 4.6 that back fires and is just running really ruff when idling alot of nack fire a sord of like a pulse going on what is my problem?

Try discoonecting the battery for a few minutes, and then reconnect and drive it, it may have to "relearn" proper idle speed.

yes it will bolt right in but you must transfer the electronics for the fuel injection.

I just had the same issue with my 88 xlt w/351 W it wound up being the MAP sensor and the timing. I would check both of these and see if it solves your issue.

adj idle

Fuse #1 20amp: Headlight Flash-to-pass; Daytime running lamps ( Canada Only ) OR Fuse # 19 40 amp maxi.; Headlamps.

The Bronco did come with the 5.8L. It's a 351 Windsor though. Ford quit making the Cleveland engine back in '74. You should have a vacuum diagram under the hood of your truck.

Interesting problem... I myself own an 88 Ford Bronco II 4wd 2.9L V6. I have issues with my idle reving up to 1500 to 2000 rpms at stop. I have not yet resolved the issue, however, I do believe that sometimes electronic components are to blame...such as the brain or "Mother Board" of the vehicle. I replaced the "Brain" on two previously owned vehicles with instant results. I would suggest the local junkyard for a try...only as a last result. The "Brain" is located on the passenger side along the Interior wheel well. If you look along the front passenger side wheel well inside, beneath the plastic, vinyl, etc....you will find a metal enclosure that is comparable to a computers cd drive or hard drive........Approx. 4" x 6" give or take. The Board will have a wide slot plastic attachment plugged into it...very similar to an IDE slot on a computer.
This is the Brain......for your Bronco II.
Buying a used Brrain is a Gamble ...
You could get a bad brain!!!

BUT...You could get an instant repair!!
Who's to decide?
I had an 1986 BMW 325I
Suddenly One Day....
It started Reving up and down erratically....I was at a loss.

Luckily, I had a friend who was a BMW mechanic, and informed me that there was a relay in my glovebox that controlled my idle. I took a chance and tried replacing the relay with one I purchased at the junkyard...although they wanted $50 for it...I was willing.....and the new /USED idle conrol relay turned out to be an affordable fix. Thankfully