I have a 2003 2.7L PreRunner w/118K. Last month I was driving thru a snow storm and after clearing it, felt the truck "lug" and heard a high-pitched whining coming from the engine compartment. I turned off the defrost switch and things returned to normal. Subsequently I discovered if either the a/c or defrost switches are activated, the problem returns, which I believe indicates the compressor has gone south.
Toyota wants $1,750.00 to repair this (which ain't gonna' happen). I only use his vehicle for longer hauls, and could care less about the a/c, but I do need the defrost to work. A friend thought I could bypass the compressor but still get defrost by unplugging the lead to the compressor. If this is true, then I can live with that. I also wondered what system would have been used for defrost had there been no a/c unit installed. If an alternate system can be substituted at a lesser price, I have no problem in gutting the a/c altogether. Otherwise, the PreRunner may be going on the market. Any recommendations or insight would be appreciated. Thanks!