Author twing21able (5 days)
Info helps thanx

Author 1aauto (1 month)
If the belt is old, it could be a bad belt, or a belt tensioner that has become weak and needs to be replaced.

Author ToxicBuddz23 (1 month)
1aauto, I have a 94' gmc sonoma that squeals while idling but quiets down around 2000rpms while driveing. I replaced my idler pulley but the squealing did not stop. What else could it be?
Thanks

Author 1aauto (1 month)
You may have to get an air gun to shock the bolt free from the crank.

Author Liisa Lee (1 month)
Any tips or secrets how to release/remove a bolt to replace a crank pulley from a 1991 Old Cutlass Cierra? The belt keeps falling off so the pulley needs replaced but unable to get it loose. Going on two days now trying to get this thing loose and no luck thus far. Thy guys have tried everything. Any tips would be appreciated.

Author Edward Rooney (7 months)
if it dosent have a auto-tensioner like the one you stick the 3/8 drive ratchet into then yes...there is a tool to put on the belt that tells you the tension so you can adjust the bolt on the tension pulley 

Author 1aauto (9 months)
The lock washer keeps the pulley from moving.

Author slowride55 (9 months)
How important is that lock washer? I got mine off but it really wouldnt tighten up when i re-installed it because the teeth wouldnt grab the threads very well. I got the pulley on there tight but now i can slightly wiggle the pulley after driving it about 20 miles. It doesnt squeak. Is this a problem or is it OK to have a little play in it?

Author 1aauto (9 months)
If you have a bent pulley some place, that could throw off the routing on the belt and cause it to jump off. You might want to look for another issue causing that pulley to not sit correctly anymore. Pulleys normally don't bend unless there was an outside force causing it to.

Author kevinsunnyside187 (9 months)
hey 1aauto i have a 2002 Chevrolet Silverado 1500 2WD there a pulley next to my ac compressor it look like its slanted and the belt it only using haft of the pulley ween its running can that be the problem that's why its make nose sometime it gose off and on but when i gas it. it well make the nose and ween i let go it the gas it stop thanks for the help

Author slowride55 (9 months)
The tensioner automatically does that.

Author slowride55 (9 months)
At first I didnt watch your video because I didnt see idler pulley in the title. My truck now has a new pulley thanks to your video!! Thanks so much it really helped!

Author 1aauto (9 months)
If it's frozen you could try a little penetrating oil on it. Hope this helps you out.

Author slowride55 (9 months)
My idler pulley squeaks on my tbi vortec 305 and I removed it but the bolt has a keeper that I can't get it off. How do you remove that?

Author 1aauto (10 months)
If you're "Just" replacing the belt you do not need to tighten the bolt on the belt tensioner, unless for some reason it has become loose.

Author Throne4600 (10 months)
Are you supposed to tighten up the tension after replacing the belt? I have a chevy caprice.

Author Mantrin185 (11 months)
Thank you for the video, it helped me fix my brother-in-law's truck.

Author 1aauto (1 year)
Thanks for checking us out. Have a great day.

Author kvansteyn (1 year)
Thank you..I'm trying it today and my husband has doubts :) you made it look pretty dog gone simple. Thanks

Author Hector Mercado (1 year)
good. will follow instructions.

Author Whitestingray81 (1 year)
I'm sure you've gotten a million questions like this... but: I just had the intake manifold gasket replaced. Now, at low RPM's (1,000-1,500) there is a sort of vibration noise. I think I tracked it down to the tensioner. Think changing it out for a new one would solve my problem? Thanks!

Author 1aauto (1 year)
You're welcome. Thank you for visiting our YouTube channel. Have a great day!

Author 1aauto (1 year)
If the belt is very loose. It's possible that this would happen.

Author macdeezy2915 (1 year)
Will this cause squeaking during start-up and while in gear?

Author theduelist04 (1 year)
Thank you very much, your video was helpful. You saved me some money, thanks again.

Author 1aauto (1 year)
We currently do not have a video for that particular repair. I'm not sure what the recommended repair time is on this project.

Author pubicsmellerburrito (1 year)
Hey you helped me in the past by posting the video on how to install the cv axel. Thanks I was just wondering how long you think it will take to put on a timing chain tension on a 2.4l sunfire or cavalier engine.

Author 1aauto (1 year)
You're welcome. Have a great day!

Author Dancelikeaboss (1 year)
thank you!


Author 1aauto (1 year)
You can just replace the belt.

Author TheTommy0528 (1 year)
Can I just replace the belt?? Or I have to buy the pulleys too??

Author 1aauto (1 year)
It's kind of hard to tell without being able to look at the vehicle. I would check all of the steering components to see if anything is worn out. Hope this helps you out.

Author singlecams (1 year)
Could you please check out my latest video of my safari and guess what the hell kind of noise that is please. Thank you for your videos.

Author 1aauto (1 year)
You're welcome. Have a great day!

Author Ronnie ''DJ Tyme'' Martin (1 year)
this was a big help thank you very much. im doing this same job this weekend

Author chuckhice (1 year)
Sorry. I posted a video as a comment, I was actually hoping to get an opinion of what might be happening or going on so I can begin to fix it. any information you can give is greatly appreciated

Author 1aauto (1 year)
You may want to check the routing of the belt against the diagram for your vehicle. The belt could be routed incorrectly, or possibly have missed a pulley.Hope this helps you out.

Author chuckhice (1 year)
ok, i had to remove my tensioner pulley so i could see what i was doing with a water pump replacement. i am ready to put the belt back on, i put the tensioner on, put the belt on and it is now too big.. it is the same belt that came off.. any idea what could be wrong???

Author 1aauto (1 year)
HI at the current time we do not have an auto repair video that shows this particular repair. We'll keep this in mind during any repairs on this vehicle in the future.

Author footballbeast67123 (1 year)
do you guys happen to have a video on how to replace an intake manifold gasket ( lower ) on the 4.3l?

Author 1aauto (1 year)
Thank you for checking us out. Have a great day!

Author Syphon787G (1 year)
Dang everytime i look for info on my blazer i always come here haaha thanks for making the videos i had to order a few parts from you guys to

Author 1aauto (1 year)
HI, thank you for checking out out auto repair channel on YouTube. Currently we do not have a repair video availble that shows this process.

Author masterbanks09 (1 year)
You guys rock. Any vids on changing block heater and water pump? I have a 2000 Jimmy/Envoy that is leaking coolant from the block heater.

Author 1aauto (1 year)
It could either be a worn belt or if the belt is fairly new, the belt tensioner may need to be replaced. As time goes on and they get a few miles on them they tend to loose their tension that they once had. Hope this helps.

Author 1aauto (1 year)
if the belt is old and cracked you may want to start with replacing it first. If it is fairly new, then chances are that the belt tensioner may be getting weak, and needs to be replaced.

Author ghanemhalabi (1 year)
I have a squealing belt, but only when the car is running idle, as soon as i press on the gas it goes away, is that a worn bearings on one of the pulleys?

Author Jeff James (1 year)
Are you kidding me? LOL I have just spent 45 minutes trying to figure out how to get the belt back on my 6.0 chevy, (took the idler pulley off to get the belt off) Watch 3 minutes of this video and Done!! Thanks I subbed!

Author 1aauto (1 year)
A way to check the alternator would be to remove the serpentine belt and spin the alternator pulley by hand to see if it's making a dragging or a scrapping noise. If it is, usually it's a sign of the bearing going. You may then want to test it with a voltage meter to see how many volts it's putting out.

Author UserName89 (1 year)
I have a groaning noise coming from my 2002 Blazer 4.3. I'm about 80% sure that it sounds like it's coming from the alternator but could it be the idler?