97 Tacoma AC Squeeling noise

Hello from Karlg Houston Tx.
Have 210 k miles on my 97 xcab 4 cyl. AC makes squeeling noise when starting up and at some intervals, still cooling to 40 deg., any suggestions? Is compressor on its last leg???

 

mine did that right before it went out, i have a 1997 2.7 Reg Cab 4x4, it went out around March, and I havent had it fixed since then, but i plan on fixing it next week, but yeah your A/C is bout to go out

 

not sure if you'll get more life out of the compresor, but consider getting it serviced. evacutate/recharge, sometimes the lubricant in the new charge in a refill can(hopefully) reduce the pressure on the bearings then give a bit more life out of it. maybe only temporary fix, but get you thru rest of the season. i guess theres a possiblity that your belt is a bit worn too; get that checked.

 

is it kind of a holwing? if not then i must have another problem. my A/C seems to howl at around 1750 rpms. i was thinking it might be the pump but wouldn't it get worse as the rpms increase?

 

I had this happend to me, it was the idle pulley bearing worned out, costed me 5$ to replace it.
that pulley revs alot since it is so small, I wouldn't be surprised if you have the same problem, check before investing big bucks

 

thats kind of what i thought. and youre right it is easy and cheap. i had to change one on my old mazda glc, except it was the water pump since it didn't have A/C. thanks for the thought.

 

Definately check the idler pulley. It's the lowest pulley on the truck and is exposed to a lot of water/moisture (especially if you offroad). It's the first thing that goes....

Mine went out on my 96. I bought two new bearings from a machine shop. Installed it....and it only lasted a couple days. The grease inside the new bearings heated up and oozed out. So I ended up buying the entire assembly from the dealer.

If you wanna put bearings in it - just make sure they're the proper bearings for automotive and/or high rpm range. And make sure you check it after you run it for a day....

 

im with janster and roadkill........check the idler pulley definitely. may be a cheaper fix than you think......hopefully anyway.

 

This thought might be completely wrong but how out r ur belts on ur truck. may b the belts out and squeeling when ur compressor kicks on.