2005 A/C Problem

[tmalone26]

My 05 XR A/C blows fine the all the suden it starts blowing cool (Not Hot). It will do this for a few miles then back to cold. I started it and let it run in the drive way for a bit, but it wont do it. I can only get it to do it driving???

[fishexpo101]

??? Do you mean that it seems to cycle between blowing cold air and not so cold air?

The A/C compressor does cycle on and off (assuming it is a Denso unit) by design. Could also be an indication of low refrigerant levels as well. Also, you could be running through areas that have a very high local ambient temperature. The A/C system was designed to cool air about 30 degree cooler than the ambient temp. You can buy a cheap thermometer and stick it in one of the vents and run the A/C - see what the temps look like.

You can double check the sightglass up by the radiator - look for the large aluminum cylinder. At the top, there is a little window. If the A/C is properly charged, there should be no bubbles flowing past the window. If the compressor just cycled, you might see some bubbles or foaming - that's OK, but it should eventually run clear.

Might be time to take it to a qualified shop to test for pressures on the high and low side. No sense trying to crazy with diagnostic, until you check the easy stuff first. If refrigerant level checks out OK - then you might have a potential wiring issue (magnetic clutch is cutting out prematurely) or a mechanical problem (orifice tube is clogged).

[tmalone26]

Very high local ambient temperature,,,Yes,,,, AZ its been 112 the past week,,,
The comp is not short cycling,
but I think your right, Ill take it in and have them evac everything out and recharge/psi test and go from their..