GEN 2 High pitch whine

Something weird today, after driving on local streets for about 30 mins to get home, after I shut off the truck, I heard a very faint high pitch whine. Its very low volume, have to be within 10 ft to hear it. Frequency is probably in the 3-4khz range, but that is just a guess. It is loudest at the passenger wheel well.

It sounds like a capacitor discharging. Lasted for almost 20 mins.

Anyone else observed this before? I couldnt believe it was coming from the truck.

maybe this?
http://www.fordraptorforum.com/f260/noise-when-opening-door-engine-off-54122/

High pitch whine? Thought you were talking about my ex for a second....

Thats just Jennifer begging to be put of her misery. AHA jk.

marilynsride said:

maybe this?
http://www.fordraptorforum.com/f260/noise-when-opening-door-engine-off-54122/

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Nope. That sounds like a motor. Mine sounds like a dog whistle. It hadn't happened again. I have a Lincoln Tig welder that makes a similar noise but about 10x louder, but that is probably caused by the frequency of the power supply.

I almost made a post about this!! I got home from a drive and decided to wash my truck as I was drying, I notice a whine almost like the fuel pumps staying primed.

Its similar to the SMG priming on my M5 but much higher pitched.

I could almost activate the whine when opening the doors,, (edit: I just checked I can't make the noise come on but I swear there was a high pitched whine going on when I was drying it. so OP your not crazy! lol)

Ill try to capture it on video soon...

I actually have a video of it, not exciting. Will post later.

FordraptorHero said:

Thats just Jennifer begging to be put of her misery. AHA jk.

Click to expand...

Come on... really? why post this? To draw out the partisans and start yet another ***** session?

smurfslayer said:

Come on... really? why post this? To draw out the partisans and start yet another ***** session?

Click to expand...

Most likely offender, SnatchSquat

I just bought my truck this weekend, I stopped for a while after about a 2 hour drive, and opened up the passenger door, and I heard the same noise, it lasted about 20 minutes also. It was loudest at the passenger wheel well.
What the heck is it??