Strange noise

[Dmaxin]

I noticed last night that when i shut the engine off i heard a strange noise coming from up front in the engine compartment. Then i noticed it agin tonight after coming home from work when i shut it down. So i started it up, rolled down the window and shut it off to see if i could hear better. All i can tell is it is coming from up front and it sounds like a high pitched GRRRRR(kinda like a duck getting strangled, not that i would know what that sounds like :D ) and it only last for a second. My truck only has 4500 on the clock and i dont notice any decrease in power. In fact i was just thinking that it just started to break in good and gaining a little more power. Thanks for any help

[Dave_WB3FYV]

Could just be your serpentine belt slipping a bit.
Mine will chirp if I shut it down with the a/c on if the compressor clutch is engaged. The engine pulley wants to stop right NOW and the rotating mass of the alternator, a/c compressor, power steering pump etc. keep the belt moving for a second or so. Doesn't do it all the time and hasn't been a problem in 25,000 miles...

[01F350SRW]

I dunno if this pertains to ur problem, but its a diesel, when you shut it off the engine has so much compresion that it stops immediatly and the surp. belt keeps going b/c of the accesesories(alt, A/C, etc.) and makes a sqeak and makes the whole truck shake upon shut down. total normal, my Dmax does it, my PSD does it a lil worse, and big rigs do it even worse. Next time u see a big-rig shut down, watch and listen, the whole thing violently shakes and makes a loud sqeaky squak.

[Dmaxin]

Thanks guys, i was kinda freaked out a little bit.

[mackin]

Mine must be gettin "SLOPPY" it doesn't chirp any more...... :rolleyes:


What tiss the life expectancy of the serpentine??? If over, under 20k or so, how's about furnishing me with the correct gator number and link......PLSE......


MAC :D

[SoMnDMAX]

GatorBack # 4061115 fits great on the '01s with the big alternator (140 amp I think?).

Replacing the stock belt with the Gatorback has ELIMINATED all of the shut down noise.

http://forum.62-65-dieselpage.com/ubb/ultimatebb.php?ubb=get_topic&f=3&t=004008

[1822]

It might also be the turbo spooling down after shutdown.

[hoot]

And don't forget about the radio. It has a fan that cools the amp. It's quite noticeable after you shut down.

[KenZ]

Mac,

I have heard that most rubber parts--hoses and belts are good for 60k and or 3 years. After that you could expect them to fail any time.

Ken

[hdmax(mike)]

6 years and 220,000 miles on my last truck. Not one rubber part under the hood had to be replaced. But when the alternator went down the tube, I replaced the serpintine belt to be safe. That was at about 186,000 miles.

I have always read that belts and hoses are good for atleast 4 years. But who really knows?

[mackin]

SoMnDMAX

Thanks for part number .....I'll keep it and inspect my belt for wear ......I have the Jumping idler symptoms so mine may be a wee bit stretched.......

MAC

[1BADDMAX]

My truck started to develop a chirping noise as the compressor clutch engages/disengages. It's a high pitched chirp. At idle I can watch the clutch engage/disengage, but it's not noisy until the RPM's go up. I can live with the noise. I just hope this doesn't become problematic for the clutch or compressor.

[atvpilot]

hdmax,
Nice pics gives me some ideas for future projects down the road. Thanks :D :cool:

[NWDmax]

The Helms manuals have many pages of belt noise fixes so its got to be a common complaint to the dealers.