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My heater takes ages to warm up and only get luke warm. How can I make them hotter?

Tiny
CRAIGANT
  • MEMBER
  • 1993 TOYOTA STARLET
Coolant is new and full and it has been bled properly. It has had a new thermostat.
Thursday, January 19th, 2012 AT 2:50 PM

4 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the heater control valve and the air blend door/actuator to include the heater core-
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Thursday, January 19th, 2012 AT 3:45 PM
Tiny
CRAIGANT
  • MEMBER
  • 2 POSTS
Thank you, Are you able to be more specific on how I can check these?
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Thursday, January 19th, 2012 AT 4:55 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
At the firewall there are two heater hose. One of it would have a valve that is controlled by a cable. Ensure the valve is fully open when heater is used.

Did you try back flushing the heater core? They can get clogged up pretty bad if coolant was not replaced previously.
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Thursday, January 19th, 2012 AT 5:02 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Get a repair manual and start with the heater control valve if its funcioning correctly-
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Thursday, January 19th, 2012 AT 5:09 PM

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