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Overheating and stalling, code P2600 coolant pump c, random shutoff at idle?

Tiny
WALLY AB
  • MEMBER
  • 2016 FORD FOCUS
  • 1.0L
  • 3 CYL
  • TURBO
  • 2WD
  • AUTOMATIC
  • 207,000 MILES
I have an issue with the car randomly shutting off at idle. I cleaned the map sensors and MAF sensor and used a cleaner for the throttle body and turbo.

I first found the coolant tank leaking; I replaced it and bled the system. I'm still getting this same code, along with p2227 barometric pressure sensor and p0420 efficiency code.

I'm most concerned about this one coolant pump c. Is there any way to test it and how do you go about replacing it?
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Sunday, May 12th, 2024 AT 4:51 PM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,607 POSTS
So, these are two separate problems, one only handle one problem per thread, we will handle the coolant pump issue on this thread, please start a new question for the p2227 and p0420 codes.

P2600: Coolant Pump "A" Control Circuit/Open

P2227: Barometric Pressure Circuit Range/Performance

P0420: Catalyst System Efficiency Below Threshold (Bank 1)

To check the auxiliary water pump you will need to remove it with is by the radiator cooling fan down low, it is a simple two wire pump so power and ground and it should turn on. Here is how to remove it for testing and replacement if needed. Check out the images (below). Please let us know what happens.
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Monday, May 13th, 2024 AT 10:36 AM
Tiny
WALLY AB
  • MEMBER
  • 97 POSTS
Thank you for your reply. I did check with the engine running that there is positive wire going to the plug but I don't know which one is neg or ground.
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Monday, May 13th, 2024 AT 3:49 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,607 POSTS
If one is power, then the other is ground. This guide can help tell you how to run the test, chances are the secondary water pump has gone bad:

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Please go over this guide and get back to us.
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Tuesday, May 14th, 2024 AT 9:58 AM

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