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E90/E91/E92/E93 (2006 - 2013)
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  #1  
Old 04-30-2013, 08:55 AM
edfromvirginia edfromvirginia is offline
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Mein Auto: 2006 325i
2006 325i overheating in am only

My 2006 325i will overheat on the way to work. I pull over, it cools down and then works perfectly for the rest of the day. I installed a new radiator cap and bled the air. It worked fine for 2 days (no overheating), then overheated briefly this morning on the way to work. I see no evidence of a leak.......
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Old 04-30-2013, 10:19 AM
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thekurgan thekurgan is offline
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Water pump?
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Old 04-30-2013, 10:37 AM
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cwinter cwinter is offline
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Originally Posted by thekurgan View Post
Water pump?
Or a thermostat about to get stuck...if it's a 2006 with original thermostat and pump, might just replace them both (plus housing).

That is, if you plan to keep the car for a while longer.
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Old 05-01-2013, 06:04 AM
edfromvirginia edfromvirginia is offline
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Anyone with instructions for replacing the thermostat?
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Old 05-01-2013, 08:23 AM
ctuna ctuna is online now
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DIY or maintenance section at the following link

http://www.e90post.com/forums/forumdisplay.php?f=16

If you are going to do this you better do both the pump and thermostat cause
its not easy access and you don't want to go back in there.

Also the thermostats are designed to fail in the open position.
A code read would be a good idea first it should store the faults.

Since the entire system is pressurized its better to check the fluid at the spare coolant
reservoir which has a fluid gauge but only do it when the motor is cold and hasn't been used.
Have you checked for leaks?

Last edited by ctuna; 05-01-2013 at 08:29 AM.
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Old 05-01-2013, 10:09 AM
edfromvirginia edfromvirginia is offline
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No leaks are evident. Once I found out the location, I called the dealership. I'm getting too old to want to do that much disassembly. I have a friend with the laptop software to check faults. I'm sure it'll be going in the shop. Thank you for replies.
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Old 05-01-2013, 10:41 AM
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CALWATERBOY CALWATERBOY is offline
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Quote:
Originally Posted by edfromvirginia View Post
No leaks are evident. Once I found out the location, I called the dealership. I'm getting too old to want to do that much disassembly. I have a friend with the laptop software to check faults. I'm sure it'll be going in the shop. Thank you for replies.

One little thing you can do....check coolant level. Low?
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