How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Virtual Wrench Your Own Question
Virtual Wrench
Virtual Wrench, Master Mechanic
Category: Car
Satisfied Customers: 14618
Experience:  35 years/Master Tech. Foreign and Domestic
2617050
Type Your Car Question Here...
Virtual Wrench is online now
A new question is answered every 9 seconds

1998 GMC: ac compressor..There is no voltage are the connector..relay

Customer Question

I have a 1998 GMC "S" series Jimmy. The AC compressor does not kick in when unit turned on. There is no voltage are the connector on the compressor clutch hub - What relay or sensor controlls the clutch on the compressor or what is my problem?
Submitted: 8 years ago.
Category: Car
Expert:  Virtual Wrench replied 8 years ago.

Hello,

Have you had the system pressures checked with a set of gauges?

Customer: replied 8 years ago.
I have not had the system checked with a set of pressure guages.
Expert:  Virtual Wrench replied 8 years ago.

Thanks,

There is a "low pressure" cut off switch that will prevent current to the compressor clutch when the pressure is not sufficient,,,its a protection device to prevent compressor damage. I reccomend having the pressure tested,,,most likely the system just needs a recharge.

Virtual Wrench and 6 other Car Specialists are ready to help you
Customer: replied 8 years ago.
Thank you and I will have pressure tested.I accepted your answer.
Expert:  Virtual Wrench replied 8 years ago.

Thanks for asking.

VW