- Dec 4, 2011
- 1,341
When I press the gas while driving there is a slight whine. Anyone know what could cause this and is it an easy fix( diy )? I was told it is the idler pulley but is there anything else I should look into?
TexazReece said:When I press the gas while driving there is a slight whine. Anyone know what could cause this and is it an easy fix( diy )? I was told it is the idler pulley but is there anything else I should look into?
plus the belt.the roadie said:Could be any of the six rotating items spun up by the serpentine belt.
Your noise could be "spark knock". Next time the tank is close to empty. toss in a few gallons of high test. Run the engine for a few miles and see if the noise goes away.Wahugg said:When I moderately push the accelerator there is a small whine with a very small tell tale rattle noise.
-Wahugg
RayVoy said:plus the belt.
Your noise could be "spark knock". Next time the tank is close to empty. toss in a few gallons of high test. Run the engine for a few miles and see if the noise goes away.
Voymom said:I had this issue when my water pump was going bad.
Wahugg said:Update!
So I waited for my tank to be practically empty and I threw 5 gallons of 105 experimental in the tank. Besides costing $26, my idle became noticeably smoother and it had a little bit more of a smoother acceleration. Maybe a little boost in power but nothing substantial.
Perhaps I didn't explain the sound enough. It is defiantly only present while under load, and its a rattle. Kinda like a chain being dragged over rocks but not as severe or loud.
Thanks for the suggestions thus far
-Wahugg
CaptainXL said:So is the noise still there? You just said it ran smoother but nothing about noise. Also please dont hijack threads like this. Its rude and makes following a thread hard for everyone trying to help.
Sparky said:FWIW mine has a little "rattle" to it also but only around 2400-2800 RPM or so while in gear and driving, then it goes away. Does not do it in neutral. Always has done it, never figured it out, and it has just shy of 160k on it, so I figure it is just something that rattles due to a resonant frequency from the engine at that RPM range. It might be the same thing you have Wahugg. Does yours do it only from a certain RPM range or across the whole range?
the roadie said:Could be any of the six rotating items spun up by the serpentine belt. The idler pulley is the most frequent culprit, which is cool because it's the cheapest. But it could be anything. Put your mechanics stethoscope on each of them in turn if you need absolute certainty before possibly wasting $20.
TexazReece said:When I press the gas while driving there is a slight whine.