it is located in the front right of the engine compartment, kinda under the frequency valve. This is not your problem, most likely, as it is normally OPEN, letting water through, and needs a vacuum in order to close it. This only happens at MAX AC. I've never heard of a valve being stuck closed. More likely is the hot/cold dial and the cable that opens and closes a flap to the heater core. Jim 1537 On Fri, 11 Oct 2002 07:07:19 -0000 "Adam" <acprice1@xxxx> writes: > My car hasnt had heat since I bought it. I looked for the hot water > valve but could not find it anywhere in the engine compartment. > Where > is this valve usually located? > > Adam