98 Obw Ac?

[rockbass]

My AC blows hot air...well, the ambient air...which happens to be hot. What's the routine now for AC servicing? I haven't had a car with AC in years, and I heard it's not as easy/cheap to get serviced(?).

[Setright]

When you switch it on, listen for a "click" from the compressor clutch in the engine room. This should be followed by a muffled "hiss" or "whoosh" inside the cabin.

 

If there is no click, maybe there is a faulty switch or relay in the system. You will also want to check the drive belt tension. Should be similar to the tension in the power steering drive belt. Take note: The adjustent screw has a reverse thread.

 

If only the whoosh is missing, you are low on refrigerant fluid. There is a canister on the pipes leading from the engine room to the cabin. It might have a sight-glass, that allows you to check the fluid.

 

If both these sounds are occuring, you will need to check the cable that regulates cabin heating. If it's maladjusted or broken, the cabin heat might be full-on, which negates the air-con cooling effect. However, the vent air should still be less humid than outside air.

 

Also, the evaporator inside the cabin vent matrix could be blocked from years of faithful service. Remove the glovebox and try to get a look at it.

 

 

Hope this helps :-)

[rockbass]

I think I'm missing the "whoosh". I didn't notice a sight glass anywhere. Today was hot...tommorow hot too...oh well.

 

Thanks for the help.