Ear piercing screeching on cold start

DropTopDon said:
I did not. No vacuum leaks that I found either. It still does it whenever the weather drops below around 35 degrees. I noticed that it changes pitch in noise when I put the transmission in drive.

Start with your pulleys and bearings though. That’s usually the issue for most
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Not sure about the belt but I think any auto store belt would be just fine. I used a Gates tensioner pulley if I remember correctly
 
DropTopDon said:
I did not. No vacuum leaks that I found either. It still does it whenever the weather drops below around 35 degrees. I noticed that it changes pitch in noise when I put the transmission in drive.

Start with your pulleys and bearings though. That’s usually the issue for most
Click to expand...

Thanks, I will start there. I only noticed it on early morning startups during elk hunt over Thanksgiving. I keep it stored in Colorado and will see what happens when I go up there later this month.
 
DropTopDon said:
I did not. No vacuum leaks that I found either. It still does it whenever the weather drops below around 35 degrees. I noticed that it changes pitch in noise when I put the transmission in drive.

Start with your pulleys and bearings though. That’s usually the issue for most
Click to expand...

Remove belt. Start engine.

No noise? It's something on the belt drive.

Noise? I'd check the OPDA
 
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