[Robmills72]

The belts on my runner have squealed before but a few months ago I replaced all of the belts and the squeal went away. About a month after that it started again, I tightened the loose ac belt and it stopped, but it has started again and I'm wanting to do an end-all fix. All the belts are still tight. It squeals when the engine is started cool. If I let it warm up I can start and stop it with no squeal. I squeals when cold especially if the ac or heater is on. It stops when I rev the engine a bit and put it in drive. I'm hoping it's not the compressor on its way out but it very well could be, if anyone has any ideas on what this could be, please leave your input

Thanks,
Rob

[Speedy Gomez]

There you go.

[giro]

On the Sienna board I found that the AC and PS squeal when the engine is cold is pretty common. Some people there have switched to a belt called gaterback (or something like that). Basically it grips better, and so doesn't have the cold-squeal problem.

I don't think I currently have any belt squeal on my 4runner, but I rarely use the AC, and park in a way that I don't need to crank on the PS when it's completely cold...but then I hit the turning-limitor clunking metal sound at the end of the driveway, so there's some cranking going on. But I also haven't heard of it being a common problem with 4runners, so like the video said it could be worth it to look for other issues.

[brifri01]

Get Bando belts. Also make sure your not getting them contaminate with any fluids. A slight drip from the wheep hole in the water pump. Or ps fluid getting on them.

Bando belts are what most European cars come with from manufacture.

[RiFF RaFF]

Do your belts sound like this? I hate when mine do this!!!