AC Problems not working?

Help. My car is overheating and it won't blow any hot air. It hasn't been blowing hot air for quite a while now. So I did a coolant flush and replace thermostat it still doesn't blowing hot air. Recently however it has been overheating. I noticed a hairline crack in the top of the radiator couple weeks ago and it was blowing steam out and overheating. The gage was on red for sbout s half mile as I drove it home. I put some quicksteel on the crack but the car wouldn't start. Two days later it did start though same sympt oil in the coolant and vice versa. I'm pretty sure the coolant is flowing because both radiator hoses are cold to start but the top gets warmer as the engine gets warmer. There are no abnormal leaks of coolant that I have found and no abnormal low levels either. The car is a 1998 Honda Accord.

Sorry but that post it took out some of my question. There is no oil in the coolant and vice versa. Also the night it overheated and I got home there was not much oil left in the tank. Not sure why.

I change the thermostat the same time I flush the coolant so there was no coolant in the system. Is that what you're talking about

How do you bleed the system? I've never r. Eally seen any leaks. Although the day after it overheated I had to add about a quart of coolant to it

Hi,

The problem started a couple of weeks ago. I'd turn on the air conditioner, and it would cool just fine for a while. Then it blow warm (outside warm, I think) air for a while, then it would blow cool for a while. The last couple of days, it has just given up and is blowing warm.

I had a similar event a year or so ago. I think the mechanic said, it's not the AC but a short in something called the PCM or ECU. I took a trip to the junk yard and replaced it.

When I mentioned this to a Honda mechanic recently, he said the PCM is totally separate from the AC, so it doesn't make sense. All I know is that my nearly new car (286,000 miles) is blowing warm air. Any ideas. It is okay to be basic as I am still trying to identify the condenser so that I can see if it is coming on.

Thanks,

I haven't checked the freon since we started there last year only to find the real problem. However, I suppose one could easily lose thier freon over the course of a year.

Another website suggested that the ACC relay (I guess that's the air conditioner compressor clutch relay) or condenser fan relay could have gone bad. Do you think that could cause my problem?

The relay solution doesn't quite make sense to me since it would seem that an electrical part like that would probably fail all at once.

Ndmand

Hi: I had the same problem. The Honda mechanic fixed my problem by replacing the a/c clutch coil.

Thanks, I have been thinking of trying replacing the AC clutch relay. How much did that clutch coil cost ya?

I have also noticed that when I cut off the AC, a kind of groaning sound comes from my dash area. Did you experience that too?

Ndmand

1998 honda accord a/c not working I check fuse it is ok. Then I turn the car on and turn a/c on and check the compressor but it was not engage.

Thanks Klow,

So I am not crazy. After I read a bit more, I thought that the Honda mechanic may have been off just a bit.

I have a lot of confidence in the Honda shops, one in particular.

So I did what you suggested and replaced the blend door actuator and it worked! This site is smarter than the Honda mechanics lol

Ndmand

HI All,

My 1998 Honda Accord EX has an issue with the air conditioner unit. While the unit blows air, the air doesn't get colder after a 10 minute period of time. While the unit runs, the air conditioner will make a high pitched noise. The noise goes away after you turn off the air conditioner.

This started on 5/9/11.

What process should I take to be able to identify the root cause of the issue?

Thanks in advance for your help.
Brian