E36 That No Heat Below 50 MPH

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   i dont think the thermostat is gone if it were the temp needle would not stay at half way and the heat wouldnt be speed related. eg no heat below 50 mph try the bleeding method as mentioned above also drive the car until hot then rev the car to 3000 3500 rpm for a min and see if the heat comes then if this is the case maybe u have a faulty water pump   

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525ixi Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 07-July-2009 Location: cork Status: Offline Points: 15	Post Options Post Reply Quote 525ixi Report Post Thanks(0) Quote Reply Topic: E36 That No Heat Below 50 MPH Posted: 01-January-2010 at 20:31
	i dont think the thermostat is gone if it were the temp needle would not stay at half way and the heat wouldnt be speed related. eg no heat below 50 mph try the bleeding method as mentioned above also drive the car until hot then rev the car to 3000 3500 rpm for a min and see if the heat comes then if this is the case maybe u have a faulty water pump

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Andrew Rolland Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Go away rain Joined: 19-August-2004 Location: Scotland Status: Offline Points: 6579	Post Options Post Reply Quote Andrew Rolland Report Post Thanks(0) Quote Reply Posted: 23-December-2009 at 11:43
	Yip classic symptoms of a thermostat that has failed open. You won't damage the car driving it in that condition, but your toes may fall off. A new 'stat is about �10. You will need to take the viscous fan off to get to the bolts that hold the 'stat cover on.
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Dergside Members Profile Send Private Message Find Members Posts Add to Buddy List Really Senior Member II Joined: 16-May-2004 Location: Mid West, Ireland Status: Offline Points: 4000	Post Options Post Reply Quote Dergside Report Post Thanks(0) Quote Reply Posted: 23-December-2009 at 11:12
	Probably a faulty thermostat (but could be a blocked rad). Check the various pipes feeding in and out of the rad to see if any are cold. One simple thing though, when bleeding the system, did you have the heater turned up to the last? If not, try bleeding again with the engine hot and heating valves open.
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theboyreilly Members Profile Send Private Message Find Members Posts Add to Buddy List Advanced Newbie Joined: 24-September-2007 Location: Cork,Ireland Status: Offline Points: 27	Post Options Post Reply Quote theboyreilly Report Post Thanks(0) Quote Reply Posted: 23-December-2009 at 06:38
	Hey lads, Bout 2-3 weeks ago my E36 323i decided it didnt want to blow out hot air while the car was stationary,nothing weird there so I topped up the coolant and bled the air through the valve on top of the rad which always worked before. But no matter how many times I do this now the heater wont heat until I reach 50 MPH and when I drop below 50 it goes cold again. The temp gauge readout never goes past half-way so the car never over-heats even slightly. Any ideas would be greatly appreciated!!!!!!
	TheBoyReilly E36 323i coupe (current) E28 528i