Toyota Avensis interior heater

Car: Toyota Avensis
Variant: 1995 T4 D-4D
Model Year: 2005
Categories: Running Rough, Starting & Power Loss
When engine is warm and ticking over the heater blows cool/cold air when you rev the engine it blows warm/hot air,till it returns to idle then blows cold again.I have had the car for 3 years this problem has only just started.
Posted: Jan 28, 2012 (12 years ago)
Sounds like your coolant level is low
Posted Jan 28, 2012 (12 years ago)
I suggest the system needs bleeding. Top the coolant level up and leave the cap off. Put heater controls onto the hottest setting and warm up gently with a few revs and topping up as necessary. Just before it gets to the point of boiling over, replace the cap. This should eliminate any air locks that may be in the system.
Posted Jan 29, 2012 (12 years ago)
Have you had a look at this similar problem:

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Posted Apr 25, 2012 (12 years ago)

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