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Alt Belt Jumped, any thing else that can happen?

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Rajin

10+ Year Contributor
226
0
Jan 22, 2010
Cookeville, Tennessee
So my car has been for the past few days, been making a squeaking noise that gradually goes away. I didn't really think to much of it until recently. Just making a little noise that will go away around 3ish 3.5k.

Well a groaning pop sound happened today when I was driving battery light jumped on signifying the alt belt had jumped.

Well when I got the car home I noticed the alt pulley had a break in it.
It'd been squeaking for a few days, pre-my over rev incident.

Anything I should do? I took a bar and tried to move my crank pulley, nothing happened there. So anything I need to check besides that?

Also, the was a wee hot after the belt jumped.
 
does the alt turn over by hand with little resistance?
if not then you need an alt but you might be able to find a pulley if it turns nice.
 
Pulley is damaged, turns just fine.

Could it be the crankshaft pulley issue? When I turnt it on a second ago, the crank pulley spins perfect, no wobbling.

It was making a horrid squeaking before it jumped.

Car sat for a while before I bought it though.
 
I would pull #1 plug and compare actual TDC to the TDC mark on the pulley. Sometimes when the harmonic balancer begins to slip it's hard to tell until it really craps out.

Case in point: I just recently replaced my alternator, and saw some rubber residue around the inside edge of my crank pulley. I grabbed the pulley and wiggled it and visually inspected it, then figured it was residue from belt wear because the pulley seemed tight. Less than a week later the pulley separated completely.
 
Don't always jump to assumptions. Just check. Don't get scared.

Alternator belts do this frequently in my case. I have a horrible time getting my hands down in the engine bay to adjust the tension on the belt and i end up heating up the belt due to slipping and it peels right off. Had this happen 3 times. Simply user installation error.

When you lose your Alt belt, you loose Charging ability, Power steering, and most importantly... your water pump. Check your pulleys and make sure they turn freely. If they are not froze up or heavy on resistance... reinstall a fresh belt and let the car run. All new belts squeek and squeel at first.. just don't rev it.. let it line out, and then drive it really easy for the first few miles until the belt is set and ready to have tension applied.

No need to immediately jump to things like " your engine crank-walked, that's why your Alt Belt broke. "
 
I limped it over to my uncles shop, a really short drive.

No smoke no blown headgasket.

It's sitting over there waiting on a new timing belt water pump and alt belt, I went ahead and bought a crank pulley INCASE mine was bad. It's never had it's pulley changed, so might as well be safe.
 
I limped it over to my uncles shop, a really short drive.

No smoke no blown headgasket.

It's sitting over there waiting on a new timing belt water pump and alt belt, I went ahead and bought a crank pulley INCASE mine was bad. It's never had it's pulley changed, so might as well be safe.

What's the reason for the new Timing Belt?
 
nice you got lucky when my alt belt jumped it wedged it self inside the crank shaft and caused the timing belt to slip. That in turn smashed a bunch of valves$$$$$$ that was a sad sad day.
 
I'm glad the DSM community is so on point to help and that issues I'm having are common issues. Crank pulley is original one. So regardless it was getting changed. Bought a Doorman OEM replacement for now. Fluidamper comes next check.
 
also while your chaning the pully make sure you check the bracket that secures the alt. mine kept slipping slowly over time i killed a few belts before i found out what was casuing it. I Made a new bracket to replace the old crappy one ever since then been holding good.
 
Alright, yeah I figure its the pulley because now when I run the car without the alt belt, car still has a small whining/squeaking noise? so I'm right in assuming its the crank pulley?
 
check the belt going to the powersteering pump and the one going to the A/C compressor on the back part of the block.
 
What's a "small drive"? You will overheat fairly quickly without the waterpump turning. Probably in 3-4 blocks depending on conditions.... Don't EVER drive without the water pump pulley:nono:
 
Don't always jump to assumptions. Just check. Don't get scared.

Alternator belts do this frequently in my case. I have a horrible time getting my hands down in the engine bay to adjust the tension on the belt and i end up heating up the belt due to slipping and it peels right off. Had this happen 3 times. Simply user installation error.

When you lose your Alt belt, you loose Charging ability, Power steering, and most importantly... your water pump. Check your pulleys and make sure they turn freely. If they are not froze up or heavy on resistance... reinstall a fresh belt and let the car run. All new belts squeek and squeel at first.. just don't rev it.. let it line out, and then drive it really easy for the first few miles until the belt is set and ready to have tension applied.

No need to immediately jump to things like " your engine crank-walked, that's why your Alt Belt broke. "

Kei.... Crankwalk is different than harmonic balancer failure. Just saying.

Harmonic balancer failure is only fun when it eats holes in your timing cover.

Rajin your car is fine. I've over heated my old car so bad it was pissing out coolant from the overflow. Let it sit and it was fine. I'd say it takes a good 5 minutes for the car to start overheating.
 
Thanks man, I really didn't want to move it, it's less than a 5 minute drive to my lift and that night I didn't want to leave it up there unattended, so I moved it twice and it sat all night and cooled and went immediately to the shop. Under 3k rpms the ENTIRE time, I still heard squeaking, which I assume is the crank pulley wobbling around.
 
That would be correct. Just don't let it eat your timing cover. IT can work its way into the timing belt too.

The way my pulley failed was fun! No squeeking at all. Just one day out of the blue.


*Crank on start up* RIP! smoke from the belt everywhere. It was crazyness. Then the pulley was jingling around. :D

I probably would have done the same thing as you. I feel terrible leaving my car places like that.
 
What's a "small drive"? You will overheat fairly quickly without the waterpump turning. Probably in 3-4 blocks depending on conditions.... Don't EVER drive without the water pump pulley:nono:

Im not trying to beat a dead horse, just trying to throw a little info on the thread.

+1 Never drive the car with out a waterpump unless your car is dead cold and under a min. the metal in the block alone can spread the heat around and keep temps within limits for about a min.

Yea your car may be fine but there is something most people don't understand. When your water pump isn't working there is NO circulation within the system and all of the heat generated from the motor is only coming from around the combustion chamber and those local temps right around the combustion chamber can get very hot very quick, also with no circulation you may not know if your car is overheating until its to late, just because its hot doesn't mean your ECT sensor sees it and informs you and the ecu.
 
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