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 Super Mechanic Your Own Question
Super Mechanic
Super Mechanic, Master technician
Category: Chevy
Satisfied Customers: 16821
Experience:  29 yrs. exp., ASE master, cert. in G.M. electrical, a/c, susspension, brakes, electronic steering
Type Your Chevy Question Here...
Super Mechanic is online now
A new question is answered every 9 seconds

The air conditioning panel light is flashing on and off. The

Customer Question

The air conditioning panel light is flashing on and off. The syst3em has plenty of r12. The compressor can be turned on and off by by hooking it up directly to the car battery. When we short circuit the low pressure control it won't run. Can you help us?
Submitted: 3 months ago.
Category: Chevy
Expert:  Super Mechanic replied 3 months ago.

Hello and welcome. My name is ***** ***** you for visiting the site.

Let me just say that any money that you paid, or if you have a subscription, that money stays in your account until the answers are rated, (positive) regardless of how fast or how long it may take to get finished. You can FOLLOW UP AT ANYTIME, even after rating.

The low pressure sensor can't be 'jumped' out on them.

The HVAC control head determines a low charge by monitoring the circuit from the pressure cycling switch. If the cycling switch will not allow the compressor to run more than 1.5 seconds, ten times in a row, the control head assumes a low charge and disables the compressor until reset.

There has been a factory service bulletin, (not a recall) for that type of concern.

Here is a link to what it states. You can copy and paste it into a new browser and rate the answer on this page.



Please don’t forget to rate the answer in a positive way, . EVEN IF YOU HAVE A SUBSCRIPTION ****THAT IS THE ONLY WAY I GET PAID ****


Expert:  Super Mechanic replied 3 months ago.

If you accept my additional service request for your email address, you can give me your email in a private info box and I'll send you the instructions in a PDF file, the file is rather large.

You will just have to accept the additional service offer and ENTER your email address in the “ENTER CONTACT INFO” section so that I can see it.

I do not have access to your email address,