Air Conditioning problem
2005 Toyota Sienna 6 cyl Two Wheel Drive Automatic 105000 miles
The last two days the a/c on my 2005 Sienna has not worked. When I looked at it last night, the ac worked fine. I let the van run for five minutes with no issues. This morning, I drove the van to get a new alternator belt, which was original to the van, and teh ac did not work. I let the van cool so I could replace the belt: about two hours. When the belt job was done, I hooked a low pressure ac guage to see if teh coolant was low. The compressor kicked in and ran well. The low side pressure was 50 psi so I let it run for another 3 minutes with no issues. It was 90+ degrees outside. I shut the van off and the ac has not engaged the remainder of today. I marked the clutch and it has not turned. It appears the compressor clutch is not engaging.
I fiddled with the coils under the hood. Appears there are two: one for the AC and one for the clutch? I actually swapped the heater and ac cubes with no results.
I pulled the connector to what I assume is the pressure sensor. The engine slows and the fans at the radiator shut off when it is not connected.
What else can I check? I an not sure what I can jumper to get the clutch to engage.
Saturday, August 14th, 2010 AT 3:29 PM