A friend helped me recharge my AC with R12 a couple of years ago. I would periodically hear a very audible clicking from the passenger side footwell. The AC has gone from mostly working to not at all.

Would like to eliminate the relay as culprit first, but can find no reference to location in the FSM. Also couldn't find any useful location info here on the forum. And yes, I did dig around the passenger footwell too. Help?

Thx,
Tom

 

The one I am aware of is attached to the condensor. I'm not sure how accessible it actually is with the dash still in though.

Reviewing the assembly/disassembly pictures I took, it looks like there may also be one above the blower motor, but I don't think it controls the compressor like the one on the condensor does.



Other relay maybe?


Condensor relay

 

Sorry, this is off topic, but do you know if this part (circled in red) can be replaced?

 

There are a few great threads that cover restoring each of your internal HVAC components. The one you have circled is the housing for your heater core. This is the relevant thread (https://www.rx7club.com/3rd-generati...hotos-1001759/).

I'd suggest finding the threads for the blower motor and AC evaporator and recovering those while you are in there, since you have to pull the dash to remove them anyways.

As far as a flat out replacement, I never looked into that. I did price check the evaporator assembly for my car with Ray, and that would have been around ~$530. I' imagine if the heater core assembly is still available new, it's probably somewhere in that price range. IMO it makes more sense to just restore yours, if nothing is badly broken, or look for a used one and restore it before you install it. Time consuming, but I was able to recondition my heater core, evaporator, and blower motor for far less than just the cost of a new OEM evaporator.

Attaching pictures of what mine looked like before I reinstalled it (sorry, they aren't the best).