AC Blowing Hot A$$ Air

[01ventuerwbe]

This Post is actually for my brother who owns a 2000 chevy Venture WBE : About a month ago his AC started blowing out hot air, when of course it should be cold. He took it to a mechanic to take a look at it, he said the compressor was working fine & that it should be blowing out cold air , that he thinks it might be electrical. since my brother was in a rush he said he would bring it back, About a year ago he had a similar problem when he took it in and had it fix they said it was just a fuse. does any one know where the fuse(s) are & what could be the problem now if not the same .

Thanks

[mobil_12]

Its hard to say what the problem is with out seeing the car...

I believe that there is a fuse that protects the HVAC system on your van. Check in your owners manual for fuse box locations and check them all for good measure

If all fuses are good, check to see if the compressor is engaging when you switch on the A/C. If it is, you could have a system with a low charge or even a compressor that is equalizing. The only way to know is to check your pressures with a manifold gauge set. With the A/C off you should have around 125 psi on both sides. If not, the system is low on freon. With the A/C engaged you should have between 30 to 60psi on the low side and 175 to 250 psi on the high side. If the pressures are not within spec then you have system problems, if they are OK then the problem is in the dash. Most likely a blend door motor problem. And that sucks.