danbraun Posted February 28, 2007 Posted February 28, 2007 I'm new and looking around alittle I need some help. My 90 ls400 has a problem with the heat,on auto it blows cold air when ideling, once you accelerate the warm air comes out. This isn't the thermostat is it. Thanks for your help, Dan
AzHotLS Posted February 28, 2007 Posted February 28, 2007 Do a "heater core" search. There are a couple good threads describing your exact problem.
danbraun Posted March 1, 2007 Author Posted March 1, 2007 Thanks for the idea's. My wife gets in on a cold day and just cranks the buttons up (seeing the climate lcd does'nt work and half the button lights are out) I'll have to try the simple things first tommorow when I get home. Thanks maybe it's nothing major. Dan
larryp Posted March 1, 2007 Posted March 1, 2007 Make sure you have plenty of coolant. If level is low you'll also experience the symtpoms you described. Need to check when cold at the thermostat housing and add there if low.
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