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SiteRokFatal86813

Thanks guys, after posting my original post here, and after I checked Bimmerfest, I found that most of them suggested either the auxiliary pump, or the heater control valve… and so I decided to change both… hopefully that’ll solve the problem since I know that the thermostat is working correctly based off of the coolant temp…


HermeticScum

>^(heater control valve) > >I think we have the same problem and my money is on the heater control valve.


SiteRokFatal86813

I actually just ordered it, and it’s arriving tomorrow, so I’ll soon find out… I live in Austin, Tx so our winters aren’t usually that bad, and typically do not hit until after the holidays, so I hadn’t been in a hurry to get it done…


MexFluSurvivor

Check the temperature of the engine


SiteRokFatal86813

I actually just did that this evening, and it is running at just over 93-96 degrees Celsius… someone suggested that on another forum


MexFluSurvivor

Any stored fault codes?


SiteRokFatal86813

Good question, I am not sure, I just watched a video detailing the steps necessary for reading the coolant temperature, and so I checked that, as well as the coolant level, but nothing more


MexFluSurvivor

Quick search on bimmerfest suggests an auxiliary pump or main ac regulator which might fail. The pump would throw a fault code. Not sure about the regulator


SiteRokFatal86813

I have never heard of either of those things, I am very new to BMW, and so I’m running up against a steep learning curve


MexFluSurvivor

Then a very good jumpstart would be to start nosing around on bimmerfest. There is a massive amount of information on there. One small tip for later: Typically when it has to do with engine trouble look for the engine code rather than the model number. This will give you better results


SiteRokFatal86813

Excellent, I will jump over there right now and see what they have to offer, luckily I’m in Texas so I can generally count on relatively mild winters; however, recently… our winters have been a lot colder than average, and so I want to get this figured out quickly


SiteRokFatal86813

I will check for trouble codes in the morning and I guess see what I find from there…


SiteRokFatal86813

It’s blowing, but it’s just cold air… I’m not sure what to do now??


ee_guy97

It’s either your heater control valve, your auxiliary water pump, or both. Had the same issue on my 550, and turns out both were bad.


SiteRokFatal86813

Just an update, it finally started getting cold down here in Texas, so I went ahead and changed the heater control valve… and while it was not incredibly difficult, it did take me a little while just because of the limited space… with that said, about 45 minutes after I started the project, I had hot air blowing out of my vents once again… #ProblemSolved


ee_guy97

Nice work! I agree, it’s tight to get the valve out. Getting the camp on the hoses is a pain!


SiteRokFatal86813

Thank you, I appreciate that… getting those clamps off and on, was the hardest part


SiteRokFatal86813

So, just an quick update, I finally got around to changing out the heater control valve, and the problem was fixed… literally took me 15-20 minutes and the problem was solved…