Question about 1992 Toyota Previa

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96 toyota previa ac cycles on and off.

The ac clutch is on for 2 sec and then off for maybe 20 sec.
With a gauge the low side drops from about 100 to 50 then turns off.
I tried to add freon and it only took a quarter of a can and did not change the problem.
On some ac systems there is a cut out switch if the refrigerant drops to low. Could this one have a faulty on? Could the expansion valve be blocked. Does it have a expansion. I bought a haynes previa repair manual but it says nothing about the ac.
I just bought the van with the problem.
I intend to repair it myself if I can. I have repaired the ac on other vehicles I've owned. If could get wireing diagram and location of parts.
If I have to I can take it to toyota just to diagnose it. Then replace the problem componets, flush the system, add oil and vacuum it.
Thanks in Advance
Bill

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Hi i took my 1992 to panama city central america. i have a overheathing problem whend i turn on my ac ,only send a e.mail to shancito60@hotmail.com to help out thanks

Posted on Jan 07, 2009

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