Squeaky Belt

armyrules2 · Feb 6, 2014

I have the most annoying squeaky serpentine belt that needs to be fixed. I have already replaced the belt, tensioner pulley, and idler pulley. Any help would be greatly appreciated. I can't stand a squeaky belt.

Sasquatch_Ryda · Feb 6, 2014

Sure its the belt? The cam synchronizer's are known to make the same noises as a bad belt. Remove the belt and start the engine, see if the noise is there or not.

Tractor Dan · Feb 6, 2014

Did you replace the whole assembly when you done the tension pulley? I ask because it's really common for those assemblies to get out of alignment or be sprung. So if you didn't replace the whole assembly that might solve the problem. Hopefully someone comes along with more knowledge of the issue.

armyrules2 · Feb 7, 2014

Thanks I will try both of those today hopefully.

armyrules2 · Feb 7, 2014

I just replacd the pulley when I did the tensioner I will inspect the rest of the assembly today. I heard that sometimes the pulleys just need some lubrication and to turn off the engine and spray them down.

creekman · Feb 7, 2014

rub a bar of soap on the belt

RDR · Feb 7, 2014

armyrules2 said:
I heard that sometimes the pulleys just need some lubrication and to turn off the engine and spray them down.

That will only offer a temporary soloution, kinda like belt dressing, or a bar of soap lol. I used to work with a guy that carried sticks of deodorant for his squeaking belt... :annoyed:

1994Ranger$$$pit · Feb 7, 2014

I guy I work with had the same issues with his serp belt on his 3.0.
He spent the extra money for a "Gatorback" belt.
Hasn't had problem since the switch.

http://www.goodyearep.com/ProductsDetail.aspx?id=3128

Kowboy · Feb 7, 2014

Changing the belt tensioner cured my squeal. Another thing I did, was take a wire brush to every pulley that was grooved. I believe they are: the crank, alternator, a/c and power steering. Rubber from your old belts will tend to build up in the grooves and you will have rubber to rubber contact. I have yet to buy any belt treatment that worked for very long. Don't waste your money on any of them. IMO!! The cam positioning sensor will also make you think it is you belt. If you have the 3.0 v6, it is located at the back of the engine and on the passenger side. Hard to see, but you can listen to see if the squeal is coming from there and not the belt. If you still think it is the belt, try spraying WD40 on the belt, w/ the engine running, and see if the squeal goes away. If the squeal stops, then we can forget about the cam positioning sensor for now and concentrate on the belt area.

armyrules2 · Feb 7, 2014

Kowboy said:
Changing the belt tensioner cured my squeal. Another thing I did, was take a wire brush to every pulley that was grooved. I believe they are: the crank, alternator, a/c and power steering. Rubber from your old belts will tend to build up in the grooves and you will have rubber to rubber contact. I have yet to buy any belt treatment that worked for very long. Don't waste your money on any of them. IMO!! The cam positioning sensor will also make you think it is you belt. If you have the 3.0 v6, it is located at the back of the engine and on the passenger side. Hard to see, but you can listen to see if the squeal is coming from there and not the belt. If you still think it is the belt, try spraying WD40 on the belt, w/ the engine running, and see if the squeal goes away. If the squeal stops, then we can forget about the cam positioning sensor for now and concentrate on the belt area.

Won't getting WD40 on the back side of the belt make it squeek more.

armyrules2 · Feb 7, 2014

Could the cold air or salt from the road have anything to do with it. They salt the roads here so could the salt water getting on the belt have something to do with the squeek.

RDR · Feb 7, 2014

id pull the belt and and check all pullys for play and try spinning them to see if they are smooth and have and noise comeing from them, and yes the salt water could have something to do with it if it has gottin into the bearings.

Kowboy · Feb 7, 2014

armyrules2 said:
Won't getting WD40 on the back side of the belt make it squeek more.

I've done this to stop squeals many times w/ no problems. It is not meant to fix but, to locate the squeal. I had the worlds worst sounding ranger, especially on damp days, and after much chasing she is quiet as can be now. Over use of the spray could cause the belt to slip off the smooth pulleys. Usually the pulley it slips off has a bent bracket or isn't running true and needs replacing. No, it will not make it squeal more. It is not a permanent oiling and will quickly dissipate. WD-40 has very little lubricant.

Kowboy · Feb 7, 2014

If after spraying w/ WD-40 and the squeal is still there, I'd definitely suspect the Cam Positioning Sensor. You can put a long screwdriver on the metal portion of the sensor and pry gently and the squeal will either stop, start or change in some way or another. What engine do you have??

armyrules2 · Feb 13, 2014

I checked all of the pulleys all of them feel and sound fine no noise coming from the bearings. How could I check the pulleys alignment could that be causing it.

Squeaky Belt

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