A/C - Not Consistently Cold
 

I just got back from a trip to PA and MD. The weather was nice, but there were a couple of days when we needed the A/C.

The hottest day of the trip, and the A/C refuses to provide cold air. The next day, when the weather is moderate, A/C is cold.

Any ideas how to proceed?

Thanks,

Robert

Are both fans running when the system is on. Check or have the system pressure checked, if low on freon then it will not cool that well. Is the valve to the heater core closing all the way.

Can I Check These A/C Items Myself?
 

Thanks - those are excellent starting points.

Is the valve on the heater core something I can check myself, or take it in the the shop?

Robert

I have a 95, same gen as yours. Under the hood, on the pass side behind the tb you should be able to look down by the firewall and see the valve, hose in, hose out and a cable at the top. Make sure that the lever on the valve is "in line" with the hose on the engine side when you have the knob inside set to cool. As my name says I'm poor so in the summertime I have to disconcet the cable and manually close the valve ALL the way to keep warm water from getting into the heater core and not allowing the ac to really cool me off. Not that the cable doesn't work, it just doesn't close the valve all the way.

On my 95 Accord I found something that defies logic. The heater water valve doesn’t matter if it is open in regard to the AC temp or regulating heat. The AC wasn’t very cold for many years and I used to open and close the water valve for winter and summer, finally I adjusted the blend door and forgot about the water valve being open and now the AC is as cold as when the vehicle was new and the heat regulates off the control also. It seems the blend door does all the work and I don’t what the water valve purpose is for on my 1995.

I would check your AC pressures and adjust the blend door if the AC is still not cold.

Please let us know "where or how" to adjust the blend door?

See page 21-25 in the 94 shop manual that you can download from the spooner link I posted in the Online Manuals thread in the DIY section.

I am just too slow

The adjustment is on page 21-25 in the online manual for a 1994 Accord from a link in the DIY section here. That is what I used to adjust mine.

There's 1 cable from the heater control lever going down to the air-blend door. And you should have a 2nd cable going from there out to the water valve. When you turn the temperature control knob it's supposed to move BOTH the blend door & the water valve together.

Both Cables and adjustments should be on that page.

Air-Blend Door
 

I found the page you're talking about, which is page 968 in the pdf counter.

However, I'm not sure what the air-blend door looks like, or is that something that's not actually visible?

Thanks,

Robert

The cable adjustment for the water valve cable end which is in the vehicle and the blend door I believe you get from the passenger side after you remove a small cover that snaps on. It is below the center of the dash or the right side of the center console area.

Just found mine, let me see if I can help you with yours. Lower left of the glovebox about where the console (need my kids to teach me the camera and to post pic's) meets the glove box there is a black "cover" with a small window in it where you can actually see some levers and a cable. There is a single "push pin plastic thing" holding the cover. Remove slowly and you should see it. Move the knob from hot to cold to be sure you see movement, if so "you found it". Hope that helps. Thanks to everyone else one mine...

Next Step To Getting Cool Air
 

Here's what I can report so far:

1) I reached 100,000 miles today! I feel this is a big accomplishment, being this has been a weekend car for many years.

2) Both fans are turning when the A/C is on.

3) I found the box discussed above - I could see the device pivoting when I turned the temperature knob.

4) The A/C was cool - not cold - when I first when out this afternoon. I left the car in the sun for about 1 hour. As usual, the cool air dissappered when I used the A/C again. This has happened for a while now. Usually, the air would become cool after about 1/2 on the road. Now, this doesn't happen.

What is the next step? I would think a pressure test, and replacement of the refrigerant.

Thanks,

Robert

it sounds like it is low on freon......,, hook up pressure gauges and report the readings..

Ok, will do. I'll report back as soon as possible, probably Monday.

Thanks again,

Robert

A/C Working Again
 

The tech tested the system, and found the pressure was low. No leaks were found.

He recharged the system with R-134A, and now the A/C is working again. This comes just when it's needed, as its' been hot the last couple of days.

Thanks for everybody's help.

Robert