For the overheating you might want to check the electric fan. It should come on if temp goes above 1/2 way point or whenever A/C is on. they do freeze up and blow the fuse.

 

Below is my belt story. I did feel it in the PS, as well as seeing low voltage.

Tight, tighter, tightest the darn new belt would still slip on the Alternator pulley under load.

Finally in desperation I went out there with a bottle of Dawn dish soap and the garden hose. Idling, I got it wet, then squirt soap on both sides, rinsed some, and soaped a little more. Let it idle a minute all soapy. To end, I ran the hose slow on it running for a couple minutes. Bingo! That solved it. There was some sort of coating on the new belt? Idk.

I normally run my belt as loose as I can, and still have the alternator not slip with the blower on high, and lights on brights. Puts less strain on all the other bearings. Radi pointed out a cool tip. After it might have been slipping, (voltage has been low), see if the Alt. pulley is hot. I want to go back and loosen it a tad now.

 

So at lunch break I just took off the belt and checked all pulleys, except crankshaft of course lol. All spin good. While taking off the belt, I noticed that the belt is so worn that I am starting to see lines on the flat side where the ribbing are on other side. I'm thinking the belt is so worn out that it probably gonna break anytime soon. Good thing there's an auto parts store across the street from my work. It's a local shop, not a chain brand like napa.

I ll check if they have the brand u guys suggested.

 

Replaced the belt, I can already tell a big difference... The voltmeter stay steady when turn on the ac, the ac also blows a lot more colder than before, and it doesn't overheat when idling with ac on anymore.

 

Nice! Old belt was probably slipping.

 

Oh yea. U can see its starting to show five lines in the flat side of belt where ribbing are at