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Re: Ok, it is winter and I have no HEAT... (archive)

[ Follow Ups ] [ 5-series (E34) Message Board ] [ Msg. Board FAQ ]

Posted by Will D on October 17, 2001 at 08:22:41:

In Reply to: Ok, it is winter and I have no HEAT... posted by Bruno on October 16, 2001 at 14:59:43:

Just a hunch, but is the hot water contol valve vacuum operated? It could be that the no-vacuum condition of full-throttle acceleration allows the valve to open giving some heat, and when you let off it closes again. If it is vacuum actuated, try removing and plugging the hose and see if you get heat consistently. If so, go after the vacuum controller.

I guess my E34 is jaleous that I take care of my E28 right now....

I have no heat until I do an acceleration all the way to 6000RPM. If I don't do that I can drive miles and miles without heat.
The dial is in full heat (for driver and passenger)

What could it be? The bentley is at home....

Thanks

'89 535i
'86 535i





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