Bang/Swoosh at startup

pi3yeargrad · 10-26-2005, 02:31 PM

When I first start my truck at the beginning of the day I guess when the ACs on on...I get a bang/swoosh sounds like its coming from the engine area up front...this only happens the first time I start the truck in the day...anyone notice this or have this problem OR know what it is?

skyhammer · 10-26-2005, 03:11 PM

I get the same thing sometimes. Just the AC kicking in.

Old Speed · 10-26-2005, 03:30 PM

i think there is a clutch in the AC pully and when the AC is on and you do a cold start the fluid in the clutch is at the bottom and not properly lubed.

TOK · 10-26-2005, 03:34 PM

Yes. If its the AC thing, it's very common. Its a disturbing noise, but so far it's harmless. You can confirm its the AC noise by starting the truck with the AC off and turning it on while the truck is idling. Mine still clunks when I do that.