R33 HEATER PROBLEM

[REEKER]

i have an 96 r33 . lately the heater unit has been blowing out hot air even when set to cold and when the air con is on , and even when i turn it off. any 1 have any ideas about this problem . and how to fix it... :

[Gold Digger]

Could be that the motor that switches between the hot and cold isn't working, not allowing the cooler air to enter.

Or it could be the climate control itself not working properly.

I would suggest trying to find a climate control unit first as that's the easiest to get out. If that doesn't work, you may have to replace the motor inside the vents.

[prtrillaboss]

Theres a valve at the firewall that allows flow, its in line with the heater core hoses. Check that. If you need any replacement parts email me I have 2 complete heater/climate systems

[REEKER]

sound wil try that

[REEKER]

do i have to take out the dash to find that valve and what side is it on drivers or passenger

[prtrillaboss]

Its in the motor bay, slightly behind the motor on the drivers side

[REEKER]

thanks for the help . went to try what u said . but didnt end up having to , :[IMG][/IMG]the car mended its self . :

[HeavyDuty]

I read where you stated it repaired itself, but I had a similar problem on a 91 Q45. Turns out the outside temperature sensor was going bad intermittently. When it was reading incorrectly, it thought the outside temp was something stupid like -150 degrees. So using that as a reference point, it had to blow fire out of the vents to get the temperature *up* to 65 deg or whatever I had it set on.

Do our cars have a similar setup?

[REEKER]

dunno for weeks my car just blew out hot air. temp guages were all reading ok . then what ever happened . it just back working proper

[prtrillaboss]

thanks for the help . went to try what u said . but didnt end up having to , :[IMG][/IMG]the car mended its self . :

weird.. glad it worked out for you

[REEKER]

---my problem is back again to haunt me

[prtrillaboss]

Check that valve, if its stuck it could be the issue or one of the motors on the blower box is fail. Check and tell or email me