HEATER BLOW COLD AIR WHEN DRIVING ON HIGHWAY

1987 BMW 635

Tiny

moejam

December, 21, 2008 AT 5:13 PM

Heater problem
1987 BMW 635 6 cyl Two Wheel Drive Automatic 193 miles

my heater works fine when parked or driving on low speed, but blows cold air when I speed up.I have changed the engine thermostat still the same problem. Any ideas

FOUND 6253 RELATED QUESTIONS

No Heat

37 ANSWERS
5 IMAGES

3 Answers

Tiny

Dr. Hagerty

December, 22, 2008 AT 3:42 PM

Change the heater control valve. It is located on the firewall. Just take the four Phillips head screws loose on the top and pull out the old one and in with the new one. Part # 64-11-8-390-132. Realoem. Com is a good place to go for parts and exploded views.

Tiny

moejam

December, 22, 2008 AT 3:46 PM

Thank you.

Tiny

Dr. Hagerty

December, 22, 2008 AT 3:49 PM

Merry Christmas mate ♥

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