schatham

My friend has a 98 Ford Explorer XLT that has developed a problem that we can't seem to get fixed. Most recently, a local garage replaced the belt on her engine, saying that it was worn and was the problem.

The problem is somewhat intermittent, and after a few days, it became apparent that the new belt (last replaced 4-5 years ago) wasn't fixing the problem.

The problem is two fold: There is a high-pitched "whine" (sort of like a hum moreso than a squealing belt) that is present. The AC on/off does not seem to make a difference, and the engine being cold or warm does not seem to matter either.

Anyway, what happens is that when this whine/hum is going on, it makes the engine idle rough, and will make it stop sometimes, like if you are in a parking lot or at a stoplight or something.

We've not been able to identify any set of components on/off that will make the problem reproduceable. The only thing I know of that's been done to this vehicle is the AC Compressor replaced a couple years ago, but this problem seems to have started sometime over the last several months, taking spells of coming & going, with no particular pattern.

The vehicle is a 98 Explorer XLT, PS PB AC Auto. 150K miles.

Any ideas?

Miss Misfit

Samething I thought it was the belt, but they found that the water pump and the tork converter. Which you hav to take the belt off to get to both of those in the truck. Have someone checl it out and if you need parts Im parting out my 98 F Explorer XLT so I can cut you a deal.

HappyExplorer

Check the air filter. Sometimes thats the only problem. (Happened with my friend). It sounds like this car has some old parts that havnt been replaced. So just check all the "cheap" fixes before replacing anything durastic.