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Dan
Dan, ASE Certified Technician
Category: Toyota
Satisfied Customers: 1650
Experience:  Auto Technician
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A/C compressor clutch does not engage when turned on. The

Customer Question

A/C compressor clutch does not engage when turned on.
JA: Has the clutch been slipping? Are you having any trouble shifting?
Customer: The transmission clutch is ok, it's the air conditioning compressor clutch
JA: What is the make/model/year of your car?
Customer: 1992 Toyota 4Runner 3.0LV6
JA: Are you fixing your 4Runner yourself? What have you tried so far?
Customer: Yes. re-seated A/C relays & switch,
JA: Anything else you want the mechanic to know before I connect you?
Customer: Yes, no power at connector to compressor when A/C is turned on
Submitted: 6 months ago.
Category: Toyota
Expert:  Dan replied 6 months ago.

Hello my name is***** am an ASE Master Technician and I am glad to help you with your question.

Expert:  Dan replied 6 months ago.

Have you checked Freon level?

Expert:  Dan replied 6 months ago.

Do you have a wiring diagram for the ac circuit?

Customer: replied 6 months ago.
I have not checked the freon level and do not have a wiring diagram for the a/c/ circuit
Expert:  Dan replied 6 months ago.

A low charge can prevent the compressor from coming on.

Customer: replied 6 months ago.
How can you check the pressure if the compressor is not coming on?
Expert:  Dan replied 6 months ago.

You would need a machine to evac and recharge the system. You could also install a manifold gauge set and jump the relay to get the compressor to come on.

Customer: replied 6 months ago.
Ok, I have gauges; just need to provide 12vdc to compressor?
Expert:  Dan replied 6 months ago.

Yes.

Expert:  Dan replied 6 months ago.

Hello again Dan here,

I am contacting you because the post has not been closed or rated.

This question is coming up on 7 days which means it will time out and close.

You have already paid to get this question answered, but you have not rated.

Let me help some more. Is there anything else I can help you with?

If I did not give you 5 star service, please let me know what I missed.

Thanks

Customer: replied 6 months ago.
The problem was a bad discharge hose; it had pin holes and was getting ready to rupture.
Expert:  Dan replied 6 months ago.

So the Freon level was low preventing the compressor from turning on. Hoping you will leave a rating I do not get compensated for my time unless you leave a positive rating.

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