If my belt starting to slip, what would I notice??

First, when my car is at idle, and the heater is on, it blows cold air. When I am around 1500 to 2000 rpm, the heater will blow hot air??
Second, when I drive and keep the car at a constant speed, I notice a slight jerking sensation (well, I can feel it). When I accelerate, its a little worse, the sensation gets a little stronger. Plus it just doesnt seem to pull as hard as it should. I have a TBI 305, and I personally think it should be a bit faster, I can barely light the tires up when I mash on the gas in 1st gear. (Maybe my TB needs a rebuild?????)

I was just curious if any of these problems could be related to a belt slippig??

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Godti
'89 Trans Am (Red)
305 TBI 5spd

 

sounds like a vacuum leak. The heater controls are vacuum operated and will not work right with inadequate vacuum. There is a $3 check valve on the firewall that goes bad sometimes. Does the heater go cold when you are driveing up a long hill or at WOT?

 

I havent noticed on a hill, Ill check next time. What is "WOT" I have seen the lingo used in other post, but couldn't figure out what it meant.
Do you have a diagram or know where I can get one for the vacuum system in my car. I would like to replace all the lines, and check all the components for leaks and failures.

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Godti
'89 Trans Am (Red)
305 TBI 5spd

[This message has been edited by Godti (edited October 25, 2000).]

 

Could you give me some what of an idea of where this check valve is??

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Godti
'89 Trans Am (Red)
305 TBI 5spd

 

Can anyone give me any input on this at all??

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Godti
'89 Trans Am (Red)
305 TBI 5spd

 

WOT means wide open throttle.

 

Thanks Josh, I am now a little more familiar with some of the lingo
Still, can anyone help me with my problem??