JerettGranger

Hello!

So I just picked up a 1988 N/A Coupe...

Ive found a lot of need to know information on the forums, but I couldnt find anything on the A/C problem im having...

Heres the problem:
The A/C doesn't work all the time.
When it does work, it does blow cold air but not very hard.
I have found that if I jam the A/C button down and play with the fan controls that I can usually get the A/C to come on.


Im guessing this has something to do with the A/C controls?

Has anyone else had this problem and found a solution?



Thanks!!

jackhild59

iTrader: (7)

Hey welcome to the Club.

You may have some problems with the control unit. It is called the logicon. I have experienced shorting or 'dead spots' in the continuously variable fan speed control. When the fan cuts out, the compressor loses the signal to run.

You could buy a used logicon on the for sale section. That's what I did. The logicon is interchangeable from the S4 to S5. That's 86 through 91.

You may also have some issues with the flapper controls, but I would tackle the logicon first. That may solve all your issues.

Good Luck!

JerettGranger

Thanks for the reply.

Is there any way to possibly fix the logicon?
Or will it just have to be replaced?

20Bforme

dont know if i know of any 'how to' pages on fixing the logicon... best bet would be to just buy a new/used one

JerettGranger

Ok, I finally got a logicon and swapped it out.
The logicon seems to work fine and I can hear the A/C come on when I turn it on, but cold air doesn't come out unless I'm driving...

Should I swap out the blower or could it be something else?

20Bforme

how long has it been since the systems been recharged/pressure tested?

J-Rat

iTrader: (2)

Either low on air, obstructed condensor, or your fan isnt pulling as much air as it should at idle. Start with the easy stuff, just check pressure.