High Idle, AC acting up, Vac pressure LOW! Help for a newb

JesseTSI

Registered User
Hello,
I am new to the community, Ive loved SC's for a while... And came across a great deal.
1 Owner SC Perfect interior and exterior condition 5 speed 155,000
I picked it up for 1,400 (a little over Kbb value, but way under NADA value)

It has been maintained perfectly with a log of all records.
Head gaskets have not gone out yet...

So here is the deal. When it starts up, it idle's pretty well at 1,500 with 20 reading for vac pressure. After the car heats up, it will idle at 2,000 with 20 reading on vac pressure (sometimes it goes down to 850 but vac pressure goes up to 10 and car runs poor)

Also, the AC unit was turning on and off (clicking) every 30 seconds bogging the RPM's (so I unplugged it and it stopped)

And the running temp of the car goes up to the M on NORM unless I turn on the AC in the car (even when it is unplugged) and while AC is blowing the car will run below N on NORM

Can anyone help me out... Im pretty good with cars, and would love this one to run perfectly.

Please and thank you,

Jesse
 
I don;t know about the rest but a high idle is usually caused by a bad IAC do you notice a kind of goose honk when you shut the car off?

I had the same issue of a high idle and it turned out to be this.
 
I will check the IC pipes as soon as possible.

If I come up with nothing, how should I check the MAF?

I am thinking about taking it into the dealership for a diagnostic for $60...

Or can I purchase a home diagnostic tool for a reasonable price for my SC?
 
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