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7 votes
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Loud squealing sound, only while driving (2002 Toyota 4Runner)

Sounds exactly like worn brake pads to me. Have you checked those recently? Brake pads actually have a wear tab on them like the one pictured below. This is designed to make noise (that chirping sound)...
Dalton D's user avatar
  • 1,958
5 votes

How do I change alternator pulley on 2001 Fiat Ducato?

Looking at the large bolt holding the alternator (closest in the picture), then I assume the alternator will pivot on that if you release the smaller bolt on the other side of the alternator - just ...
Solar Mike's user avatar
  • 34.6k
5 votes

How to replace Alternator out (2001 Nissan Sentra) [pictures inside]

Try to get hold of a workshop manual; failing that, a Chiltons or Haynes manual for that car. I've just checked the Haynes, and it does show the Alternator replacement in some detail. A couple of ...
PeteCon's user avatar
  • 8,712
4 votes
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Are torque sensors used to reduce cam belt failure damage?

Good question. My answer is, probably not. With a caveat; it depends on the speed of the failure. Sometimes bearings will become excessively noisy before they fail. In this scenario the vehicle ...
Steve Matthews's user avatar
4 votes

Are belt conditioners safe?

According to manufacturer Dayco (Why Belt Dressing Is Not a Solution To Quiet a Noisy Belt), it should not be used. In the past, simply covering a noisy serpentine belt in belt dressing would ...
CharlieRB's user avatar
  • 9,015
4 votes
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How to replace Alternator out (2001 Nissan Sentra) [pictures inside]

Based off this diagram, the adjusting bolt is not present in the pictures you provided: It looks like your Sentra has air-conditioning, which means that your belt tensioning mechanism sits above the ...
Zaid's user avatar
  • 39.2k
4 votes

Horrific squealing when car is first turned on

The horrific squealing sound is your belt rubbing on on some pulley. Typically this means that either The belt is bad. The belt is loose. Some pulley has seized. If the belt is cracked or feels like ...
rviertel's user avatar
  • 1,169
4 votes
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Air-conditioning belt is making a loud squealing noise. What should I do?

Usually it will either be the belt is slipping on the AC pulley because the serpentine belt is worn out, the tensioner pulley is no longer providing the amount of tension on the serpentine belt, or ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
4 votes

Belt size to bypass a/c, please?

I don't know what size you'd need, but can show you how to figure it out for yourself. Your serpentine routing should look something like the following: The red line is where the belt would be routed ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
3 votes

Are belt conditioners safe?

As a fix for a squealing belt... no, I don't like it. Find the root cause and fix it. As a tool for increasing belt longevity... they last a long time on their own, I don't think I'd extend the normal ...
cory's user avatar
  • 671
3 votes
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Bad pulley or Belt?

From your comment, it looks like the alternator has seized. I was easily able to get the belt off till it was the alternators turn, the belt was melted onto the alternator, and the pulley was the ...
HandyHowie's user avatar
  • 25.4k
3 votes
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"Fan hitting something" noise when switching on "Inside Air" button

This kind of problem can be tough to sort out. Let me offer a few suggestions to get started on tracking down the source: Get a helper to work with you. Have her/him start the car while you try to ...
dlu's user avatar
  • 14.5k
3 votes

Can a loose serpentine belt damage my power steering

It is highly unlikely that a loose serpentine belt would destroy your power steering system. It is possible that the power steering would stop working, make odd noises, or steer jerkily because of a ...
anonymous2's user avatar
  • 5,235
3 votes

2010 Hyundai Elantra squeals loudly on start up

It's not timing belt that is squealing, it's the accessory belt. They have to touch the accessory belt to replace the timing belt. Something went wrong in the repair, and your best option is to demand ...
juhist's user avatar
  • 14.6k
2 votes

Easiest way to disable the A/C compressor

If there is a seperate fuse or relay for the compressor, then you could remove either. There should be an electrical connector near the compressor that could be unplugged, or you could cut the belt ...
john D.'s user avatar
  • 552
2 votes

What is the cause of belt squeak in the morning?

I had a similar problem with a Hyundai. In my case the drive belt had stretched after 2 years of constant use. A simple fix was to tighten the belt to ensure enough tension on the belt. This solved ...
Taleef Paloji's user avatar
2 votes

How to replace Alternator out (2001 Nissan Sentra) [pictures inside]

Different year same engine. Your image Loosen the idler pulley nut. And per the posted image loosen the adjuster to remove the belt. You don't have to remove the AC compressor to R&R the ...
Ben's user avatar
  • 10.7k
2 votes

Horrific squealing when car is first turned on

I am a former accessory drive engineer at Gates. The squeal you hear can be due to a couple of reasons. Your belt has worn out. Depending on their construction, (usually either cotton, polyester ...
steelyray's user avatar
2 votes

proper time for changing timing belt

The condition of a rubber timing belt will deteriorate both through wear during use and through exposure to the elements (temperature cycles, salt, rain etc) which is why both the mileage and the age ...
motosubatsu's user avatar
  • 10.2k
2 votes

Crankshaft timing belt

The camshaft pulleys are meant to turn at half engine speed as the 4 stroke cycle needs two revolutions of the crankshaft but the valves open once per cycle. As long as the belt did not slip you ...
Solar Mike's user avatar
  • 34.6k
2 votes
Accepted

tightening belt tensioner after fitting new timing belt

Initially any slackness in the belt will be spread between all of the pulleys. By tensioning it, then cranking by hand, you are moving all of the slack to the location of the tensioner. The ...
HandyHowie's user avatar
  • 25.4k
2 votes

Proper fitting of the timing belt on the car before rotating the engine

No, your way is not the correct way of doing this. It's very simple. Once the belt is installed, rotate the engine in the proper rotation (most are clockwise) from the crankshaft for two turns. This ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
2 votes
Accepted

Why don't car manufacturers make camshaft pulleys with walk blockers as a safety measure?

Not that what Solar Mike is saying is wrong, but to add to his post ... There's three problems with what you're suggesting: Some companies DO put the walk blocker on the camshaft pulley. Look at the ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
2 votes

Timing belt location on the pulleys with the new tensioner

The new position looks like it is more correct than the old position, which looked too far back. Looking at the location of the tensioner, wear would likely cause the tensioner pulley to tilt up at ...
HandyHowie's user avatar
  • 25.4k
1 vote

Lifespan of radiator hoses and serpentine belts

All belt or chain in many cars is stated in your manual book or service manual for that car, every car have different manufacture safety standard. For common vehicles this is around 60K miles - 100K ...
Cubic273.15's user avatar
1 vote
Accepted

2001 Tacoma - Consistent belt chrip/squeak noise

The tensioner for the power steering was loose and wobbly. Tightened it up and the noise went away.
sbuck's user avatar
  • 197
1 vote

Does the 95 Toyota Camry have a single belt for alternator, ac, power steering and drive?

I should have watched this video more closely. It does have a separate power steering belt located behind and below the drive belt.
sirdank's user avatar
  • 163
1 vote

Bad pulley or Belt?

Take the belt off, noting every pulley it turns (aside from the crank pulley). Try to turn every pulley you noted in step 1 (including the tensionor). Any device with a pulley you cannot turn by hand, ...
Adam Howell's user avatar
1 vote

Alternator belt whining when plugged in only

The component at fault is the alternator. When it's charging, it's creating too much drag which is shredding the drive belt. You could check things like the bushing and bearings but to be fair, I'd ...
Steve Matthews's user avatar
1 vote

Pulsating rubbing/humming sound emitting from belt/pulley area

it's hard to hear the noise from your video, but if it comes from a slipping belt, you probably won't be able to hear it distinctly with a stethoscope / screwdriver, in this kind of case it could be ...
Alex's user avatar
  • 141

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