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Getting 2e84 code and car random over heats/pump will work…

Customer Question
Getting 2e84 code and...

Getting 2e84 code and car random over heats/pump will work sometimes/checking thru fill jug..it has a new pump/thermostat...I can turn on pump with scanner only when car is not running..scanner wont turn on pump while car is running..its a 2007 bmw 328i

Mechanic's Assistant: Have you checked the coolant? Have you checked for a leak in the cooling system?

Yes its topped off

Mechanic's Assistant: What is the model of your '07 BMW?

328i

Mechanic's Assistant: Are you fixing your 328i yourself? What have you tried so far?

New water pump and thermostate

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

I have tried 2 new pumps so far..i sent to bmw to have it looked at and they gave me a 9 grand price to fix..nit picked the car but could not help me with cooling issue unless I gave the go to fix car

Submitted: 8 months ago.Category: BMW
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Answered in 9 minutes by:
11/17/2017
BMW Mechanic: Steve, BMW Expert replied 8 months ago
Steve
Steve, BMW Expert
Category: BMW
Satisfied Customers: 25,817
Experience: BMW Expert
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What did bmw say needed to be changed for 9000?
Ask Your Own BMW Question
Customer reply replied 8 months ago
they did a diag of the car..charged an hour..said a few oil leaks,suspension work..they also said they needed to install oem pump and thermostat and start from there..would not really look at 1 issues unless I was gonna spend lots of money there 1st..car has lot of miles but never ran bad..still doesn't..just over heats at times..a hose busted a few months ago and fans were noisey..I fixed hose cleared codes ran fine a few months..i used a new german pump and thermostat...can turn on pump with scanner while its on but not running..and restarting car sometimes turns on pump...makes no sence
Customer reply replied 8 months ago
any ides what sends signal to pump to turn on?
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