I just recently got an FD that has a PFC and A/C that doesn't work. I read that some cars have problems with the A/C due to the PFC and some don't, so before I went ahead and did the "mod" I was just looking around to find any other reason the A/C might not be working. Then I noticed this 2-wire electrical connector right near the A/C compressor that was totally trashed. As soon as I touched it, it fell apart and now looks like this (sorry for the blurry pic, still trying to figure out how to use my new camera LOL!)



Now, the 2 black wires towards the front of the picture seem to go to the same place - there is no resistance between them. Then on the plug on the other side there is one wire that has 12 volts at all times. I thought maybe I got lucky and that if I just reconnected these wires my A/C would start working, but unfortunately not.

My questions:

1. When I shove these 2 black wires into the connector, the A/C compressor (clutch?) engages at all times. Seems like it should do that only when you switch the A/C on, but that is not the case. So my first question is, how are these wires supposed to be connected?

2. The previous owner didn't care about the A/C and he said he noticed it didn't work anymore after the new motor was installed. So I'm thinking maybe it just needs a recharge or something. But I assumed that the A/C compressor wouldn't even come on if there was no pressure in the system. Any ideas on this?

Sorry for the dumb questions I'm just not too familiar with how the A/C system works. I am ready to do the PFC A/C wire "mod" but want to make sure everything else is connected, etc. properly before I do. Any input? Should I go and get the A/C system tested to see if there is even any freon in there, or what should I do??

Thanks, this forum rocks!

 

looks like the air pump plug

 

I second that opinion!! It is the air pump plug. Just make some individual plug-ins and your all set!

 

Ah, ok thanks. Well the car has a midpipe so I don't think I want to plug in the air pump right? I don't even know if there is an air pump on the car - I don't even know where it is or what it's supposed to look like. As you can tell I'm still learning ... just got the car the other day LOL. I assume what I thought was the A/C compressor (the thing in the picture) is actually the air pump. It must be LOL. It makes a wicked metallic screaching sound when you put a load on the electrical system i.e. turn on the lights, press the brakes, etc. Does that make sense? Maybe I should just remove the damn thing. Even if I end up putting on a cat for one day to pass emissions testing, I can run a cat for one day without the air pump right?

By the way, as if you can't tell, I need a shop manual. What is the best one for these cars? Thanks!

 

Yes, you have a pic of the air pump posted. The A/C is located on the lower right side of the engine looking from the front.

The airpump also supplies air to the combustion chamber. so with a stock ecu and engine, unplugging the AP will make your idle a little more rough. Not unbearable though.

If you put your cat back on to pass emissions, you will probably need the AP also as it is there for emissions purposes.

I don't know what to tell you about the sounds.

There are factory service manuals on the internet or sometimes you can find a printed version on e-bay. Nobody else makes one.

 

Cool thanks for all the info. The car has a PFC so it idles great with the air pump unplugged. I guess I will probably just take it off once I put on a cat and pass emissions, or find a "friendly" shop to pass me.

 

the screaching is your dead air pump. are there emmisions laws in texas?

my 93 r1's ac had problems, but i just put 1 pound of freon in it, and now it blows cold again. what ever you do, i you have a 93 dont switch over to r-134.

good luck,
raj

 

Yeah I live in a county that does emissions testing, so I guess I need a working air pump for at least 1 day out of the year. Should I just assume it is completely dead and look to buy another used one from someone who took theirs off, or is there some way to test it?