Need Help Identifying Water/Heater Valve Part - BMW Forum

KarmaPolicia! · 08-07-2007, 06:20 PM

I have a 92' 325i that recently overheated. I looked around and found the problem which appears to be a broken valve. Not really sure what it runs (I'm guessing the coolant) but it's located against the firewall.

I looked through realOEM.com but couldn't locate the part in the diagrams. If anyone knows the OEM# and/or the actual description of the part, i'll really appreciate your help. Thanks.

drz · 08-07-2007, 08:59 PM

Can you include a picture that isn't zoomed in so far? I am having trouble locating this in the engine bay

KarmaPolicia! · 08-07-2007, 10:04 PM

Sorry for the quality of the picture (cellphone). I'll try to take a better photo once I get a hold of a digital camera.

Basically the part I'm talking about has three valve connections. Two of those valves connect via rubber hoses (OEM#64211394292 & OEM#64211387424) to the water valve (OEM#64118375792).

If you look at the "HEATER AND AIR CONDITIONING => WATER PUMP, VALVE, HOSES" diagram on realOEM, you might get an idea of what I'm talking about. Again, sorry for the picture provided and I'll be sure to post up a better version of it ASAP.

SHAHAB323IS · 08-07-2007, 11:26 PM

it's the heater valve, when your heat is off it's closed, when you turn on your heat, it opens and coolant flows through the valve through the connection on the firewall and into your heater core, which gives you heat

i know all to well about it, because I've had the lovely experience of changing one in the middle of winter in my frozen garage, just to find out, the heater valve wasn't the problem and the problem is most likely a clogged heater core, so my car still doesn't have heat, which doesn't matter now but i'll fix it sometime soon when i get a chance

sorry i'm rambling, but yeah that's your heater valve, I don't understand how it caused your car to overheat, is it leaking?, and also if your car overheated you could have blown your headgasket, but lets hope not

KarmaPolicia! · 08-08-2007, 12:02 AM

Quote:

Originally Posted by SHAHAB323IS

it's the heater valve, when your heat is off it's closed, when you turn on your heat, it opens and coolant flows through the valve through the connection on the firewall and into your heater core, which gives you heat

i know all to well about it, because I've had the lovely experience of changing one in the middle of winter in my frozen garage, just to find out, the heater valve wasn't the problem and the problem is most likely a clogged heater core, so my car still doesn't have heat, which doesn't matter now but i'll fix it sometime soon when i get a chance

sorry i'm rambling, but yeah that's your heater valve, I don't understand how it caused your car to overheat, is it leaking?, and also if your car overheated you could have blown your headgasket, but lets hope not

Yeah the groove or thread around one of the heater valves (specifically the left of the 3) broke off. I'm guessing the hose connected to it was just dangling off, which completely depleated the coolant in the reservoir tank, and it explains the huge puddle of coolant on the garage floor the following morning. I might be wrong though, but it makes a plausible reason.

Is it too much of a trouble to give me a general walkthrough? I unscrewed the nut but the darn still won't budge. Also, do you know where I can source the part? I tried looking for the OEM# but I had no luck finding it and I'm not a big fan of heading over to a local BMW dealership. I'd really appriciate the help man, you've already helped a lot.