Thermostat?

[Jamison]

Well I took the car into the dealership to have them check a belt noise and change the oil. as soon as i get the car back and turn the heat on i notice that the car never heats up. no heat comes out of the vents regardless of temp setting or fan speed. also the car seems to take longer to warm up. it stays in lower gears longer and revs higher when cold. (more so than normal). also there is a clicking sound coming from the climate control unit. it makes the sound all the time wether car is on or not. i think it goes away if the car is on for some time. My first thought was the thermostat. Any ideas?

[325isBaby]

Thermostat or Water pump really hard to diag without driving the car myself

[528iTdude]

Check out my new post from 528iTdude. Similar problem. Did you get it fixed or find the problem?

[fastshivy]

Dude it is very cold up there....it may take a little longer to warm up the engine in the winter. Aside from that it sounds like you are not getting warm water flowing through your heater core....could be the heater valve or a relay/switch in the climate control. It probably is related to the clicking ...see if you can figure that out first. An engine thermostat could be stuck open, but I think you would still get some heat. Engine thermostats on well cared for Bimmers don't normally cause too much trouble. Did they fix the belt squeal? What was that about? What does the engine temp say...is it in the normal position after 10min?

[cnn]

Originally Posted by Jamison

Well I took the car into the dealership to have them check a belt noise and change the oil. as soon as i get the car back and turn the heat on i notice that the car never heats up. no heat comes out of the vents regardless of temp setting or fan speed. also the car seems to take longer to warm up. it stays in lower gears longer and revs higher when cold. (more so than normal). also there is a clicking sound coming from the climate control unit. it makes the sound all the time wether car is on or not. i think it goes away if the car is on for some time. My first thought was the thermostat. Any ideas?

But replacing only the thermostat is a half-job. The cooling system has MANY MANY components that can fail (radiator, reservoir, belt, idler etc.).

I wrote this a while back. Go through it carefully:
ENTIRE COOLING SYSTEM REPLACEMENT Tips and Tricks (Very Long, Enjoy!)

cnn
98 528i

[528iTdude]

Excellent write-up. You went to great lengths to give us readers a very complete sequence of operations as to do a precise job on a cooling system overhaul. I will bleed my system tonight after work, and go from there (-10 F. expected for tomorrow). Much cheaper than calling my local BMW repair guy, and have him go through the entire system, since I am not sure anyone can be quite sure what to troubleshoot in order to get it running properly again. I will update my results, if any. Thank you! JM>

[cnn]

Originally Posted by 528iTdude

Excellent write-up. You went to great lengths to give us readers a very complete sequence of operations as to do a precise job on a cooling system overhaul. I will bleed my system tonight after work, and go from there (-10 F. expected for tomorrow). Much cheaper than calling my local BMW repair guy, and have him go through the entire system, since I am not sure anyone can be quite sure what to troubleshoot in order to get it running properly again. I will update my results, if any. Thank you! JM>

RAISE the FRONT end: like up a curb or ramps, or a few large stones etc.
As long as the Front is raised 5-6 inches, it is good.

Be patient, it takes a few cycles to be done.

When the summer comes, if I were you, I would do the entire cooling system tune-up, it prevents an over heated engine.

COOLING system tuneup: $550 parts (labor yours)
NEW ENGINE: $5-6K.

Figure it out! plus when you drive with a completely overhauled cooling system, you feel SECURED!