Temperature Problems - BMW Forum

e36surge · 12-13-2005, 08:29 AM

1995 325is with 235 000 Kms. Rad and temperature gauge were changed at dealer in April 2005 along with waterpump. Coolant level is fine.

When sitting car warms up to 50% or mid-point between blue and red on the gauge. Once you start driving the temperature dips back into the blue (cold).

Checked the sending and returning hoses to the heater core and they're hot. Some heat does come through the heating vents but very little compared to what it used to do. HVAC system works fine.

I picked up the car in May so I wouldn't know if this was a problem last year and I can't reach the previous owner.

Does anyone have any idea what's going on?

Don't want to go through a Montreal winter without heat.

thanks. e36surge

bimmerboy328i · 12-13-2005, 09:14 AM

Sounds like your thermostat is starting to go bad. Replace the thermostat, and see what happens.

Cruzin 323is · 12-13-2005, 05:27 PM

isn't that some shit.. i just read this.. and my car JUST started doing this today....

can some 1 help me out, and tell me where i can get a new therostat from.. and what else i will need to fix this problem

BImmerN2B · 12-13-2005, 06:35 PM

He is right, I would dare to say to do it even before winter. Especially on Canada where I saw almost everybody with a block warmer on their car!!!

:

do that and by the way check your Microfilter, and don't forget to bleed the system when you are done just in case.

Cruzin 323is · 12-13-2005, 08:06 PM

ok well i put 2 and 2 together... i found the thermostat on bavauto.. and found the DIY in the betley manual... i just wanted to know if i gotta buy the thermostat housing aswell?

bimmerboy328i · 12-13-2005, 08:13 PM

Quote:

Originally Posted by Cruzin 323is

ok well i put 2 and 2 together... i found the thermostat on bavauto.. and found the DIY in the betley manual... i just wanted to know if i gotta buy the thermostat housing aswell?

You don't have to unless you want to upgrade to alluminum one which will prevent the cracking from the cheap plastic one.

I forgot, have you checked for leaks?

Cruzin 323is · 12-13-2005, 08:53 PM

hell no.. my car don't leak! i stay up and stuff like that

bimmerboy328i · 12-13-2005, 09:00 PM

Quote:

Originally Posted by Cruzin 323is

hell no.. my car don't leak! i stay up and stuff like that

Oh, you pressure test everyday

.

I would go with a thermostat then.

WardJ · 12-13-2005, 09:22 PM

i might get slapped for making this comparison

but i had the same problem on my accord and i found that the lever was semi-jammed in the engine and i had to grease the end of it so that when i rotated the blower switch it would actually open up all the way

Cruzin 323is · 12-13-2005, 11:17 PM

^^^ ya.. thats not likely!

e36surge · 12-14-2005, 08:18 AM

to quote cruizin "isn't that some shit.." An 8 month old thermostat has gone bad! I am very unhappy, not to mention a little cold.

Gkamysz · 12-14-2005, 01:54 PM

Yeah, I would say thermostat. I did mine recently. I had the same symptoms. Quick job, but you need to take the fan off. If you didn't ask them to change the thermostat, they might not have. I didn't bother with the aluminum housing. The thermostat I got looked different than what was in it, so don't be alarmed.

The thermostat in my bosses new X5 failed before it reached 2 years old or so.

mmclaren · 12-14-2005, 03:13 PM

taking what i said back :P didnt read the question properly