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pjm0345 · Oct 31, 2007, 06:42 AM

I just got my car back from the garage. I had the drivers window repaired. It wouldn't go up or down. Now my heater is blowing only cold air. The thermostat is less than a year old. I was wondering if having the window repaired could have caused a problem with the heat? Could it possibly be a fuse? It's a 1994 bmw 325I.
Thanks...

CaptainRich · Oct 31, 2007, 07:47 AM

Originally Posted by pjm0345

I just got my car back from the garage. I had the drivers window repaired. It wouldn't go up or down. Now my heater is blowing only cold air. The thermostat is less than a year old. I was wondering if having the window repaired could have caused a problem with the heat? Could it possibly be a fuse? It's a 1994 bmw 325I.
Thanks......

Yes, it could be a fuse.
Is the engine reaching operating temperature? If it is, that would rule out the t-stat.
The problem may be in the Climate Control module or it could be in the Control Head/Switch assembly. Not likely cause by work done on any window system.

TxGreaseMonkey · Oct 31, 2007, 08:05 AM

. Check all under-dash and under-hood fuses with a test light or multimeter. Here's how:

https://www.askmehelpdesk.com/cars-t...tml#post252145

. Check whether coolant is flowing through the heater core. If not, the heater control valve may not be working or the core is blocked, due to corrosion or mineral buildup.

pjm0345 · Oct 31, 2007, 10:15 AM

Originally Posted by CaptainRich

Yes, it could be a fuse.
Is the engine reaching operating temperature? If it is, that would rule out the t-stat.
The problem may be in the Climate Control module or it could be in the Control Head/Switch assembly. Not likely cause by work done on any window system.

Thanks CaptainRich,
You were right... I checked the fuses, replaced the heater control fuse, and presto! Plenty of warm & hot air... I needed someone to agree with my diagnoses. I'm proud of myself for making an educated guess, and fixing it myself... Not bad for a 46 year old, female Interior Designer... Have a great day! :D

pjm0345 · Oct 31, 2007, 10:17 AM

Originally Posted by txgreasemonkey

. Check all under-dash and under-hood fuses with a test light or multimeter. Here's how:

https://www.askmehelpdesk.com/cars-t...tml#post252145

. Check whether coolant is flowing through the heater core. If not, the heater control valve may not be working or the core is blocked, due to corrosion or mineral buildup.

Thanks txgreasemonkey,
It was the fuse for the heater control. I changed it and it works great... I really appreciate your good advice! Have a great day:) :)