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My 96 F150 whines like it has a turbo charger. It only does it when cold. I thought it was a vacuum leak but can't find anything. I checked the idler pulley's and they seem fine. Any ideas? It does run fine, no other problems. Thanks for any help.
About 2-3 minutes. I was going to take a look at it today but I screwed up and used the remote start on it. It ran for 10 minutes before I got to it so it wasn't making any noise.
Mines been doing that for 10 years. It's the alternator. Mine will continue to do it for 30+min if it's -20°F or cooler. 225k miles and counting on the original. All pulleys are fine.
My 96 F150 whines like it has a turbo charger. It only does it when cold. I thought it was a vacuum leak but can't find anything. I checked the idler pulley's and they seem fine. Any ideas? It does run fine, no other problems. Thanks for any help.
Mine does the same when cold I wouldn't worry about it.