View Full Version : 1992 BMW 325i... NO HEAT!!!

10-11-2005, 03:19 PM
This may be a dumb question, but there is no heat working in my car.

I've tried all the noob solutions already, like turning the heat knob all the way
towards the red, turning the climate control knob to the highest setting
(26 degrees i believe). I've also tried it at fully blast (4), and aimed at the face, feet and at the defrosting vents. There really is no heat...

A buddy of mine took a look at it, and said that there is a tube going from the engine to a valve, and then from a valve into the firewall. The tube on the engine side is hot, and on the other side is cold. I think the name is called a water valve, and it's electronically controlled.

Does anyone know how to solve this problem???
If so, what parts will I need??

10-11-2005, 09:16 PM
hope this helps a little ...


10-20-2005, 10:01 PM

Still no heat in my car, and it's getting colder!! Is anyone parting out an E36
where I can pick up either a heater core or a water valve???

10-20-2005, 10:13 PM
i'm pretty sure they're not that expensive .. you can always try the dealer .. and tell them you can get them cheaper at another dealer... but its farther than that one ... they'll reduce price

10-20-2005, 10:24 PM
Yeah, that's a good idea, i'm gonna try that.
I think the price that they were saying was around $250 CDN for the water
valve. If they reduce it, that might not be too bad.

Thanks boss.

M3ti Compact
10-21-2005, 12:08 PM
Is your engine getting up to temp? If not it's your thermostat.

10-21-2005, 03:30 PM
Is your engine getting up to temp? If not it's your thermostat.

No the temperature goes right to the midway point, and it doesn't move from there, no overheating at all either (thank god).

It's more than likely the Water Valve, if not that then it must be the heater core. I just found an great price on a used one water valve too. BMW was asking $260, but I found one for $120 used.

10-21-2005, 04:33 PM
i have a similar problem, i cannot get heat to come out the floor vents...

10-26-2005, 03:28 PM
i had this too
i had no heat going to the passenger side. but somehow it just started to work again.
cross my fingers it starts to work this winter

10-26-2005, 03:43 PM
i had this too
i had no heat going to the passenger side. but somehow it just started to work again.
cross my fingers it starts to work this winter

lucky b**tard... i have to drive around with winter gloves and a toque!!!

11-23-2005, 03:07 PM
Okay here's an update... tell me if anyone knows what the problem is...

The heating issue I'm having is still going on.
Another mechanic took at look and thought the problem was with the thermostat.
On one side of the thermostat, the hose was hot, and the other side was
cold, so he changed it, and that solved that problem.

But there still isn't any heat in the car.

He followed the heat going through the hoses, and the 3 tubes from the
water valve are all cold. He is saying that there is a part that is under the
intake manifold that is not giving heat to the water valve.

Does anyone know what part he's referring to... and if that sounds like a
common issue???

Also he's saying that my radiator is hot on one side, and not so hot on the
other, so there definately is a circulation problem going on. But what could
that possibly be??

11-23-2005, 10:45 PM
I suggest you try this. Leave the heat off in your car. no fans, heat set to cold. drive around for a solid 15 minutes. Turn the heat on JUST for the windows. In my (limited) experice with e36's, if any heat is going to work, its that one.

ALSO: to ALL e36 owners. Recirculate the warm air in your car. car heats up much quicker*th-up*

11-24-2005, 01:29 PM

Thanks to Eurostyle and the Water Valve that I picked up from him.
Also thanks to my buddy Sharaz at AHA Auto.

AHA Auto
2074 Steeles Ave. E Unit #17
(at Melanie Drive, West of Torbram)
Brampton, Ontario L6T 4Z9
Tel: 905-790-6558

Tried changing the thermostat. Nothing doing...
Changed the water valve, and after adding back coolant, and running the
engine for a bit, there was HEAT!!

Thanks to all the suggestions from everyone, it was much appreciated.

11-24-2005, 03:43 PM
can u get heat to come out of the front vents?

11-26-2005, 01:44 PM

but there is no air blowing out of the vents to the feet.

11-27-2005, 04:21 PM
for some reason i can only get hear out of the windshield vents, and the floor (poor at that) and when i switch to front vents(facing passengers/driver) the air turns cold

11-27-2005, 04:32 PM
I think i mentionned this when i picked up my new radio from you*th-up*,(thanks by the way, works great). My car's got a similar problem, but you can temporarily aleviate it.

Blast the air at your feet and the window. After like 5 minutes, turn on the "recirculate air in cabin" button (or knob, depending what kindof setup you got)

then let it run till the engine is plenty hot. Then, WHILE your engine is at high rpms, switch it to blowing air right at you. I think its because of a weak motor that changes a flap. However, i dont know WHY my method helps the car heat up faster, but for me it works:D