So my 1997 Accord EX 2.2L has R134a. It has been blowing out warm air for the last year or so.

I finally bought one of those refill kits with the gauges built on them. It shows 50-60psi, which is full (actually over full). SO I don't think my AC system has a leak.

I have heard people say that there is a cable that connects the Cold-Warm selection knob to a sweeper door at the heater / AC box. They said that if that cable gets loose, when you select Cold on the selection knob, the sweeper door doesn't close all the way, and it still lets hot air in.

This pretty much describes my situation.

Does anyone know where this "sweeper door" is? How can I access it?

Any other ideas why my AC is warm and not cold? Does R134a need to be evacuated, then recharged?

Thank you for any input!

 

That sweeper door or whatever isn't it... the r-134a systems are junk, period. They outlawed the old systems because of higher safety standards and junk like that, and the older ones didnt need recharging. Buying those recharge kits wont do anything unless your low on refrigerant. And being its not low, you need to take it to a shop and have them vaccum the system and recharge it. The new refrigerant doesnt stay good forever and eventually needs replacing. Its not that expensive to do at all...

 

Hmmm... So you think I just need to drain and recharge the R134a?

I could try that.

 

if u over fill it, it wont be cold.

 

Well, the guage on the refill kit said it was at 60psi and 40-50psi is normal. 60psi+ shows as RED and is overfull.

Do you think I should just aleviate some of the pressure down to about 40psi and see if that fixes it?

R134a is ok for the environment because it doesn't have chlorine in it, right?

 

The old refrigerant contained CFC's, which were outlawed years ago. But relieving the pressure in the system has a very small chance of working. the car is almost 10 years old, so just take it to a shop and have them service it. Like I said, it's inexpensive, and it doesnt take that long. If you know anyone who does it have them do it... my buddy did it for 20 bucks.