What is the correct thermostat for winter driving?

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canada karl
Posts: 1065
Joined: Tue Jan 06, 2009 3:50 pm

Heater

Post by canada karl »

i'm getting warm air thru the defrost but only slightly warm air thru the under dash vents. The heater valve is new. What I might try is disconnecting the the two hoses to the heater.Pour in a container of "CLR"followed by boiling water.Let it steep.Flush. That way I won't have to pull the heater core. :D
1976 530i. BMW 59 Triumph TR3A(rolling resto). 67 Triumph TR4A(salvageable). 86 900S Winter car
canada karl
Posts: 1065
Joined: Tue Jan 06, 2009 3:50 pm

Heater again

Post by canada karl »

This just occurred to me. Does the short heater hose that comes from the block, and is in-between the manifold runners ,the one that goes to the "TOP" heater inlet or do I have them reversed?
1976 530i. BMW 59 Triumph TR3A(rolling resto). 67 Triumph TR4A(salvageable). 86 900S Winter car
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Mike W.
Posts: 2889
Joined: Wed Aug 30, 2006 12:12 am
Location: Sonoma County

Post by Mike W. »

Yeah, you're right but I think of it the other way. I think of it, since the flow goes that way, of it going from the back of the head, to the lower heater inlet nipple.
Mike W.



02 525ita. Wife's, aka grocery getter
02 530i. New to the fleet, 3 pedals.
03 QX4, AKA the Datsun. Finally got the 4WD vacationmoble to stop smoking.
07 Xterra. Still on the DL, a purchase from hell.
canada karl
Posts: 1065
Joined: Tue Jan 06, 2009 3:50 pm

heater hose set up

Post by canada karl »

Mike Can you check your 528i to see how that is set up?
1976 530i. BMW 59 Triumph TR3A(rolling resto). 67 Triumph TR4A(salvageable). 86 900S Winter car
canada karl
Posts: 1065
Joined: Tue Jan 06, 2009 3:50 pm

heater hose set up

Post by canada karl »

Mike Can you check your 528i to see how that is set up?
1976 530i. BMW 59 Triumph TR3A(rolling resto). 67 Triumph TR4A(salvageable). 86 900S Winter car
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