HELP!!! weird sound.....
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HELP!!! weird sound.....
It justed started this morning. I have a 1999 POwerstorke SD. It seemd to happen more at the shift point but also it seems to be happening when i decelerate at high speeds. It almost sounds like a blow off valve or a belt slipping. IT seems to be coralated with the tranny. All my gauges are good, my fluid levels are fine. The noise really scares me. It sounds bad. Like a screching almost. Any help would be great. Any questions that I can answer thaT would help you I will do my best to answer. Thanks
dustin
dustin
Post Fiend
Joined: Jun 2004
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From: Parker, CO
I was riding with my parents the other day, and their 03 7.3L was doing that too. It's an insanely loud and high pitched screeching/whistling noise that happens during acceleration at higher rpm's (2500-3000 rpm). The noise can be duplicated while driving, or while in park and reving the engine. I tried listening under the hood, but it is so loud I can't tell where the noise is coming from. I'm talking ear piercing loud. They said that people look at them funny when it happens on the road, so others on the highway can hear it as well.
Any clues so I can help them?
Any clues so I can help them?
Lead Driver
Joined: Dec 2003
Posts: 6,773
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From: On the road in Ohio
you could blow a belt , and generaly it will happen at the worst time, like 2am in the middle of nowhere.., the pulley could break and fly off and damage the radiator etc.....generally the replacement parts cost is about $ 100 or less plus price of a new belt...which is recomened.
also check the alternator too it could be goin south on you too .
also check the alternator too it could be goin south on you too .
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the sound continues
My mechanic friend told me that it could be and most likely is the torque converter. Does that sound right to anyone.
And how much can i get one for?
And how much can i get one for?
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Lead Driver
Joined: Dec 2003
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From: On the road in Ohio
just curious, did you remove the belt and checked all pulleys? also while the belts off , start it and see if the noise persists...just a thought...
maybe some else here will chime in......with more info
maybe some else here will chime in......with more info
Last edited by f=2504by497; Nov 29, 2004 at 09:35 PM.
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From: nc
Originally Posted by f=2504by497
just curious, did you remove the belt and checked all pulleys? also while the belts off , start it and see if the noise persists...just a thought...
maybe some else here will chime in......with more info
maybe some else here will chime in......with more info
Lead Driver
Joined: Dec 2003
Posts: 6,773
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From: On the road in Ohio
Originally Posted by bluemoose89
if i am not mistaken the oil pump is belt driven not a good idea to run it with no belt.
could you give some more info on this....
Posting Guru
Joined: Jan 2003
Posts: 2,181
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From: Eastern CT.
I recall there is a vacum pump on the PSD's, my 95' PSD launched one, 
and I had some fun stopping it with a load on it of course., But not sure about a belt driven oil pump, other then the power steering, I thought it was gear driven also. Better find someone that know's for sure.
and I had some fun stopping it with a load on it of course., But not sure about a belt driven oil pump, other then the power steering, I thought it was gear driven also. Better find someone that know's for sure.
Super Moderator
Joined: Jul 2004
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From: Ohio
It is okay to remove the belt, and no the oil pump is not belt driven. Isolate the noise by removing the belt. If no noise check your idle pulley, air conditioner, if it is the vacume pump you will be finding out soon when you hit your brakes...........
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From: nc
Originally Posted by f=2504by497
ahhh i think this would be a good time for me to zip it and sit back and learn.
could you give some more info on this....
could you give some more info on this....