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Roger
Roger, BMW Master Tech
Category: BMW
Satisfied Customers: 3037
Experience:  10 yrs. experience as BMW Master Technician, shop foreman and dealer.
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When at stop light or stopped traffic engine temp rise to

Customer Question

When at stop light or stopped traffic engine temp rise to above average. On the Hwy it is fine
JA: Just to clarify, what are the exact lights you're talking about?
Customer: Traffic signal
JA: What is the model/year of your BMW?
Customer: 2006 750li
JA: Are you fixing your 750li yourself? What have you tried so far?
Customer: yes. I replaced tank a few days ago. It was leaking, busted on the bottom. Thar was when first had trouble
JA: Anything else you want the mechanic to know before I connect you?
Customer: that is all. Driving down the road no problems. Im think maybe coolant fan not working
Submitted: 5 months ago.
Category: BMW
Expert:  david craig replied 5 months ago.

Hi Im David, well to make sure the fan is working, just let the vehicle idle until the temp goes a bit past mid gauge then the fan should kick on. also check your coolant level and make sure you dont have any air trapped in the systam.

Customer: replied 5 months ago.
Is their a sensor or relay? anyway to test fan?
Expert:  david craig replied 5 months ago.

yes there is i will get back to you with that information. got to spend sometime with the grand kids,.

Expert:  david craig replied 5 months ago.

do you still need assistance?

Customer: replied 5 months ago.
I do.
Expert:  david craig replied 5 months ago.

ok. sorry for the delay. we'll pull the fan relay and jumper it. do you have a meter?

Customer: replied 5 months ago.
but where is the relay?
Expert:  david craig replied 5 months ago.

ok. ill send you a diagram. sorry for the delay

Expert:  david craig replied 5 months ago.

check the fuses first. this video will guide you to where they are.

https://youtu.be/10RU6Ks3aiY

Expert:  david craig replied 5 months ago.

do you still need assistance?

Customer: replied 5 months ago.
Im sorry but this is a waste of time.
Expert:  david craig replied 5 months ago.

its a waste of time because you cant test a relay?

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