Recently, I got a bunch of work done on my car by a local mechanic (nice guy - family friend of a good friend of mine. So Im inclined to believe that he didnt rip me off). Prior to this, my car, a VW GTI VR6 (w/ 133k miles on it) was overheating when standing in traffic. Turned out that the radiator fans werent working. So here is a list of stuff I had done by the mechanic: -replace both radiator fans -replace fan control module (did this one myself) -replace thermostat -flush and fill coolant -replace both timing chains + guides + tensioner -replace serpentine belt -replace clutch with stock sachs clutch -replace flywheel with lighter flywheel (got clutch+flywheel combo a while ago - so had those laying around) all parts I purchased myself from various online vendors ever since work was done on my car (Oct '07) I noticed a 1-2 mpg drop. But I shrugged that off to winter blend gas. Recently I've been noticing that the heat doesnt work when the car is stopped. I feel air coming out of the vents, just not hot air - so fans are working. But if I rev the engine and hold the revs for a second or two, hot air comes out. Also it seems that the initial heat up phase from when the car is turned on to when i finally feel warm/hot air coming out of the vents has increased significantly. It used to be such that I'd feel hot air coming out as soon as the engine reached normal temps. But now it takes much longer than that. Since I'm having all these problems with the heat, I thought I'd try and see if the AC works. AC isnt working either. What could be some possible reasons why it is acting up like this?