|
|
1990 Toyota Corolla Heater Doesn't Heat
|
|
|
| |
|
|
arcticwolf70648
New User
Jan 13, 2012, 5:45 PM
Post #1 of 2
(3547 views)
|
|
1990 Toyota Corolla Heater Doesn't Heat
|
Sign In
|
|
On my 1990 Toyota Corolla 1.6 Liter sedan, the heater won't blow hot air. Working fine one day, blowing cold air the next day. Literally. Steps taken by mechanic so far: flushed heater core, flushed coolant system, replaced 3 partially clogged heater hoses, replaced engine thermostat. Heater now blows only lukewarm air. Don't know what else to do. Mechanic says a new heater core might help, but he also says he flushed the heater core thoroughly and it should be working. Any advice would be much appreciated. Thanks, Joe.
|
|
| |
|
|
Hammer Time
Ultimate Carjunky
/ Moderator
Jan 13, 2012, 6:08 PM
Post #2 of 2
(3540 views)
|
|
Re: 1990 Toyota Corolla Heater Doesn't Heat
|
Sign In
|
|
With the engine at full operating temp, locate the 2 heater hoses where they go into the firewall and feel them to see if they are both hot to the touch. If not too hot to hold, then you have to look at the actual engine temp and if that is up, if it is, then your looking at a restricted heater core.
If you find that they are both too hot to hold, then the heat in that vehicle is controlled by a blend door that regulates heated air flow. The door is operated by a cable on your car which can be damaged or broken.
If they are both not too hot to hold on to, then you either have a restricted heater core or the system is not completely full and getting air pockets for some reason.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
|
|
| |
|
| | |
|
Auto Repair Home
SEARCH
WHO'S 
LOG 