Help a lady out in need please! A/c issues

I'm just a shade tree mechanic of 35 years. I never heard of an index unit? Sounds to me like a hustle.

Maybe one of the AC knowledgeable mechanics can answer better.

Somethings you can check. Have someone turn the AC on while you listen to the compressor. It will click when it engages. That would indicate the compressor and freon are okay.

Do you see any lines freezing up? The expansion valve could be stuck closed. The high pressure side could be plugged. Another possibility is the blend door under the dash is not working and is stuck on the heater side.

Let someone else post. But I would be thinking about another shop.

There are no short cuts or bypasses. A leak you could do the home recharge and get a few days out of it is about all.

I would try to get a motel if you could. There's a major heat wave here in TN. I bet it's hot there.

 

I TOO HAVE nEVER HEARD OF A INDEX UNIT. On some VN,s there is a A/C monitoring device it will indicate by what lights are on or flashing what may be wrong with the A/C . It is a small black box with green light or red on the fire wall drivers side upper under the cowling for W/wipers. Written on it will give you a explanation of what the lights are indicating. But first is the clutch engaging on the A/C comprresor ?

 

The monitoring device I'm referring to has nothing to do with the operation or not of the A/C. If you hear the A/C clutch engage is it staying engaged or quickly disconnecting. Check for the monitoring device on the firewall . What are the lights indicating ? Is the blower motor working ? Where did they check for voltage if you seen them checking.

 

Sounds like the AC clutch coil has burned up and won't engage the AC compressor clutch.

 

The way I'm reading this is that the AC control box was sending low voltage to the clutch coil which overheated the coil and it quit working. Then you ran a wire supplying 12+ volts to the clutch coil and it began to work again for a day, but the damage had already been done previous to running the additional wire.

The only way that you can make it work temporarily until you get home is to tack weld the AC clutch together for permanent engagement and then replace the AC clutch and coil assy and control unit when you get home.