97 LS 400 just bought. Perfect car except while on the lot someone stole the radio and the handy man/ mech rewired and added a used aftermarket radio and now when volume is turned up the radio goes out for a sec and the AC goes warm. Air went warm again when someone used the power seat on pass side. Once you turn off and turn on AC blows cold again. No fuses blow just resets itself any idea where to start?

 

I've owned my 97 for about 3 months and have recently dealt with this exact issue twice now. Always been able to get it to come back on within a few mins.. From what I've read, it's usually either a bad relay or a bad AC speed sensor. Pretty common issue with Toyota/Lexus...

 

It sounds like a wiring problem that the 'mechanic' created behind the radio and AC amp.

 

this problem was corrected when I replaced the AC clutch