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Old 12-08-2005, 03:05 PM   #1
kfroment
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Heater Problem?

My heat comes on okay when driving, however when I stop at a traffic
light, or coasting, it just blows cold air. The heat only comes out when
the engine is under load. Any thoughts? Thermostat? (replaced 2 years
ago) or ??

Thanks,
Ken
94 325IC
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Old 12-08-2005, 03:25 PM   #2
jeffrie
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Were does the temp gauge stay @ when up to temp. 12 o clock?
If lower then 12 o clockT-stat is shot again.
A coolant flush wouldn't hurt either, part of maintenance every 2 years.
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Old 12-08-2005, 04:03 PM   #3
mirek
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Try to bleed it..

With the car at running temperature, turn on the hot heat in auxillary key position, unscrew the bleeder screw, open the rad cap, and start pouring water in,.. bubble should come out of the bleeder hole.

or you can do this with the car running and attache a hose to the rad cap and force all the air out..
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Old 12-08-2005, 04:27 PM   #4
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Most likely your water valve.
Also verify your thermostat is not seized.


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Old 12-08-2005, 11:25 PM   #5
kfroment
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Quote:
Originally Posted by jeffrie
Were does the temp gauge stay @ when up to temp. 12 o clock?
If lower then 12 o clockT-stat is shot again.
A coolant flush wouldn't hurt either, part of maintenance every 2 years.
Jeff, The gauge is right in the middle where it should be. I may try the flush as well and see what happens. Thanks for the input. Ken
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Old 12-08-2005, 11:39 PM   #6
kfroment
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Quote:
Originally Posted by Justin e36
Most likely your water valve.
Also verify your thermostat is not seized.


Justin, Thanks for that info. I will have both checked out. Where did you copy that from? Regards, Ken
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Old 12-08-2005, 11:45 PM   #7
kfroment
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Thanks everyone for your suggestions. I will post root cause when found. Ken
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Old 12-09-2005, 12:44 AM   #8
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He copied that from the BMW tis.

if you need it contact me
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Old 12-09-2005, 02:00 AM   #9
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great info Justin! had same problem, will try to see if this will fix it...
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