heater on 1998 Toyota Tacoma

How do I check if my heater control valve is working the way its supposed to.

by in Vancouver, WA on December 09, 2009
1 answer
ANSWER by on December 09, 2009
The heater control valve is right in the center rear of the engine compartment on the firewall. It is black plastic with two hoses going to it and a cable. Get a friend to move the heater control lever from max cold to max hot and see that the valve operates through its full range. The engine doesn't have to be on to test it this way. Start the engine get warm operate to the Hot position both hoses should feel hot. Is your Thermostat OK?
Related Items:
I checked the heater control valve and flushed the heater core so hot water is flowing thru. Blower works fine and...
my truck no matter how long I warm it up or even drive it for the heater only blows luke warm air out all vents and I can't see any leeks. Plus I just got out the the...
I would lik to replace the heater control valve on my 1996 toyota tacoma and am not sure where to start looking for it?
At first,The fan/heater would come on if I took out fuses and then placed them back. Now the blower and the heater do...
loud squeal from heater fan. Not every time but quite often, Will go away when fan is left run for awhile. Is there a...