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Heater won't work. A/C blows cold air but no hear

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Old 01-03-18, 11:21 AM
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judgehomey
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Default Heater won't work. A/C blows cold air but no hear

Lexus SC 300, year 2000 heater won't work

Moving ti the proper Forum ,... Salim
I have SC400 too and it is very finicky about coolant being free of air and topped up properly. .. salim

Last edited by salimshah; 01-03-18 at 05:54 PM.
Old 01-05-18, 08:32 AM
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mrmj2u
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Check your thermostat. If the water never gets hot enough, you will not get any heat.

I've seen some cars where the owner would remove the thermostat instead of replacing it.
Old 01-06-18, 09:49 AM
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gerrb
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more likely a bad heater control valve
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