Squealing while accelerating, belt keeps breaking

[1996Eclipse420a]

Even after the rebuild it seems like I still have slight problems I went to wash, and wax the Eclipse this morning. Once I started it up, the serpentine belt broke. It was split right down the middle I lost power steering so I went and got another belt... Put it on tonight, went for a 12 mile drive right after it was on, and once I got back to the house, it split down the middle AGAIN! I have noticed there is this god awful noise when I rev, or accelerate the car. It's kinda like a power steering pump moaning and it gets louder the faster I go. Something isn't right about his, and I have no idea what it is. Once the belt breaks, the noise quits.

The harmonic balancer should be fine, considering I had to send it off to the machine shop when I have my crank balanced with my new rods/pistons.

I don't think it's the tension pulley, due to the fact that something is cutting the belt and making it split down the center of them. I don't hear any unusual sounds with the hood up, and there doesn't seem to be any play that I can tell in any of the pulleys.

Any advice or info would be great. Thanks.

 

[VelocitàPaola]

I'd inspect all the pulleys very carefully for grit or anything sharp embedded in the grooves. I'd also be open to the possibility of a misalignment somewhere; maybe the bearings in your PS pump or AC condenser are on their way out.

This has nothing to do with turbo conversions, though. Thread moved.

 

[jayson427]

We don't have harmonic balencer that's 4g63 for future reference. Some where your pulley('s) are tweaked. Is your crank pulley stock? If they are not lined up perfect it will ride one side of the pulley and break every time. Is your tension to tight? Maybe your bearings are going out like Paul said.

 

[jayson427]

I might be way off but I would find out if your power stearing is square then check in correlation of the crank pulley. if it's off a washer on one or both of the bolts might fix your belt. Just a thought.

 

[starfish]

BEFORE YOU PUT ON ANOTHER BELT,reach in and turn each pulley by hand to see if any bearings are bad.Also spin each pulley around(by hand) and check for burs on each pulley.then if you still cant find any problems your gonna just have to eyeball up your pulleys and check for alignment.your gonna need a good eye.You might of burred up the crank pulley when you dropped the motor.I always use a small triangle file to clean up any burs.Hope this helps

 

[1996Eclipse420a]

Sorry about posting it in the wrong thread Paul. Also, the PS Pump pulley was slightly off at an angle. I put a washer behind one of the brackets to fix that problem. It hasn't broken a belt since, but it still whines and it's RPM related. Revving, and accelerating.

Since the 420a's don't have a harmonic balancer, then should the crank pulley move at all? I noticed after the belt broke, it was vibrating and moving around quiet a bit when I inspected it at idle. No other pulley was doing that, so that could be the culprit.