Something is mis-aligned. Check the mounting brackets to see if anything is bent. Make sure that the alternator and any other accessories are aligned properly and that all of the bolts are used to keep the accessories from twisting out of alignment. If the mounting bracket is bent you may need to get a replacment.
No. The idler pulley only maintains tension on the serpentine belt. A faulty idler pulley can cause noise and a loose tensioner arm can cause belt slipping but other than having a similar name, it has nothing in common with engine idling.
The idler pulley is a unit connected to the engine via a brace or bracket. This part merely routs the belt in a certain direction and, if bad, will cause a failure of the total serpentine system or cause belt wear as with any bad pulley in the system.
frozen pulley
The belt is slipping.
i am having this same problem and i couldn't figure out why this was because when i inspected the pulley it appeared to be up against the engine, but i just figured out that the pulley is acually two pieces (the pulley and vibration dampener that it sits on) that can separate and cause the pulley to move towards your fan. you will need to replace the pulley/vibration dampener. You will probably need to expose your flywheel and have a friend put something against it to keep the engine from turning over when doing this.
The A/C compresor is low on the front of the engine, up inside the engine compartment. I have never heard of a serpentine blt "bending" a pulley... When an idler pulley bearing fails and siezes, it will break a belt. This is most likely the cause of belt failure. If the A/C compressor drive is not turning by hand, this is most likely the cause. There is a bearing on the nose of the compressor that allows the hub to rotate and "drive" the compressor when the clutch is activated. The A/C clutch is replaceable without replacing the entire compressor assembly. Check all the pulleys and make sure another one is not also failed.
the failure of the bearings in any of the pulley driven units can cause the belt to break.
If I am understanding correctly, it sounds like a pulley may be bound up. Thereby causing the belt to rub and make alot of friction thus causing melting. It could be any pulley in the serpentine system. Remove the belt and feel all pulleys for any play.
idler pulley. Change it now before the serpentine belt breaks. Hard job to do I think?
usually the serp. belt will shed because it shifts on one of the ridged pulleys. The most common cause of this is a failing pulley or a bad tensioner.
I encountered the same problem on my 95 Pontiac Transport 3800. An additional problem was every time it rained and the serpentine belt got wet it come off. That was caused by the combination of theTensioner being weak and the Crank Damper pulley which had moved and eating off the front row of nodules. After the local Pontiac dealers Mechanic had diagnosed the Transport, their Service Manager explained to me what the cause of my problem was. The Crank Damper Pulley moving was the primary cause of the serpentine belt moving. Replacement of the Crank Damper Pulley and the Tensioner corrected both the problems. Hope this helps you.
Most likeyl cause could be a bad pulley