First time on this form. We have a 2008 RX 400H and the heater blows hot when I accelerate and switches to cold when slowing or sitting at idle. Is temp controlled by vacume? If so I think I have a vacume leak. Any ideas how to trace for a vacume leak. Everything else seems to work fine. Thx Rick
Rd 400h Heater temp changes
in 04 - 09 Lexus RX330 / RX350 / RX400h
Posted
First time on this form. We have a 2008 RX 400H and the heater blows hot when I accelerate and switches to cold when slowing or sitting at idle. Is temp controlled by vacume? If so I think I have a vacume leak. Any ideas how to trace for a vacume leak. Everything else seems to work fine. Thx Rick