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almavioleta · Jun 17, 2010, 06:42 AM

I have a Honda Accord LX 4dr sedan ka5mt.
The a/c does not work. Tested the a/c-radio panel and it works fine- compressor works, fan works. Something is not allowing for it to turn on. Any ideas?

CaptainRich · Jun 17, 2010, 07:11 AM

What year is your Honda?
How did you test the compressor?
If the system has sufficient charge, then everything should work. If the system charge is too low, it won't.

almavioleta · Jun 17, 2010, 07:26 AM

Sorry, forgot that part 2004.
We powered the pressure switch and it clicked on the compressor. The a/c was blowing cold air at that time.
But when it is left to its own devices, nothing.
I can hear the a/c try to come on but it stops after two seconds. I am at a loss.
The charge is just a little low. I will add more tonight just in case it is something as silly as that but...

TxGreaseMonkey · Jun 17, 2010, 07:40 AM

This link may help:

https://www.askmehelpdesk.com/cars-t...ml#post1864159

almavioleta · Jun 17, 2010, 05:05 PM

Did as suggested above and nothing. I am going to try and replace the blower motor resistor and see if that helps.

CaptainRich · Jun 18, 2010, 06:50 AM

Wait! Don't do that!
That doesn't power the compressor.
You said you powered the pressure switch and it worked. That leads me to think it's low on charge. Or that switch is bad.
What are the high and low side pressures?

almavioleta · Jun 18, 2010, 07:30 AM

LOL... Thanks
40 & 210.

CaptainRich · Jun 21, 2010, 07:10 AM

Originally Posted by almavioleta

LOL...Thanks
40 & 210.

That set of numbers can only come from a working compressor, but the charge may still be a little low.
What you're probably experiencing is quite common: You live in Ft Laud I see. It has been very hot here in Fla. Your A/C has been working it's keister off in this heat. But, it's working. Go to the local parts store and buy a small thermometer that you can stick into the A/C vents. Ask the parts people for one. It will clip into place. Then, next time you run the A/C, look at that thermometer and you should see that the A/C is bringing the temp down. When you first start your car and switch on the air conditioning, start with the mode selecting outside or fresh air. After some of your dash has cool to a little below outside temp, then you can switch to Recirc and feel the benefit. Just remember to always start with outside first.

almavioleta · Jun 21, 2010, 07:41 AM

The charge is full.
I have not have a working a/c this year, and as you say it is very hot in Ft Lauderdale. I have to order the a/c pressure switch as no one have it in stock, not even Honda. Thanks

CaptainRich · Jun 21, 2010, 07:48 AM

Originally Posted by almavioleta

The charge is full.
I have not have a working a/c this year, and as you say it is very hot in Ft Lauderdale. I have to order the a/c pressure switch as no one have it in stock, not even Honda. Thanks

But, you said your High/Low was 210/40.
If the A/C wasn't working, those pressures would be even.
Maybe you aren't getting air flow? Like the blower isn't working?
Or maybe the mode doors aren't moving inside the dash. When you switch from Defroster to face to floor, does the air flow come out where you selected?

almavioleta · Jun 21, 2010, 08:15 AM

Yes the high/low is that.
You said earlier that it could be the switch that is bad. I am really lost now.

The a/c works when we powered the pressure switch. I was just informed that he had to jump the blower motor as well.

The a/c was blowing cold air at that time. But when it is left to its own devices, nothing.

As I see it by our conversation it is not the compressor, pressure switch, condenser, blower motor, resistor.
Oh well... frustrating.

Something is not allowing the a/c to turn on and remain on if it is none of the above I am really at a loss. :(

CaptainRich · Jun 21, 2010, 08:29 AM

Back to the basics:
Without by-passing or jumping any switches, the compressor does not cycle? Then I would agree with the cycling switch.
If those system pressures you posted are after you by-passed the switch, replace that switch.
Let us know how that works for you.

almavioleta · Jun 22, 2010, 05:48 PM

The pressure is when we jumped the compressor and the blower works when jumped.
Being that we are jumping the a/c we cannot change the air flow direction.

As I understand that leaves me with two options:
a. the resistor which you stopped me from getting as you say that could not be the problem.?
b. the pressure switch which so far seems to be what I need.

By the way love your Quotes.

CaptainRich · Jun 23, 2010, 07:18 AM

Originally Posted by almavioleta

Did as suggested above and nothing. I am going to try and replace the blower motor resistor and see if that helps.

You clearly have two issues with your A/C system:
First, the compressor isn't cycling on when requested.
-- From what you are posting, that is likely the pressure switch that you are bypassing.
Second, the blower isn't functioning properly:
-- Again, from what you are posting, that seems likely that the resistor for blower control that you're bypassing needs replaced.

almavioleta · Jun 23, 2010, 08:13 AM

Thanks you... Captain Rich I will be installing the switch tonight and see what happens.

At that time we will see if the resistor needs replacing as well. Wish me luck. :)

almavioleta · Jun 25, 2010, 05:39 AM

My hats down to you.
Thank you for the use of your brain.
The a/c works now, we did have to replace the resistor and the pressure switch.
Needless to say, I am happy as a peacock. :)

CaptainRich · Jun 25, 2010, 07:32 AM

Originally Posted by almavioleta

My hats down to you.
Thank you for the use of your brain.
The a/c works now, we did have to replace the resistor and the pressure switch.
Needless to say, I am happy as a peacock. :)

Outstanding!
Great to have A/C again, yes?
Thanks for working with me on this, too.