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go-west..
go-west.., Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 1185
Experience:  Technican with 20 years experience focused on engines and electrical.
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I have 2004 freightliner colombia, when I start it engine

Customer Question

I have 2004 freightliner colombia, when I start it engine protect light blinking on shuts the motor down
JA: What is the complete model and serial number of your machine?
Customer: Detroit 60 m12249
JA: Are you fixing this yourself? What have you tried so far?
Customer: Replaced alternator with wiring it was burned Maybe it burned some of the fuses bu t I don't know which ones
JA: Anything else you want the equipment mechanic to know before I connect you?
Customer: No thats all It won't let me start shuts down the motor
Submitted: 7 months ago.
Category: Medium and Heavy Trucks
Customer: replied 7 months ago.
Also tried to interchange ecm engine fuse with no success
Customer: replied 7 months ago.
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Expert:  go-west.. replied 7 months ago.
Good evening
The biggest culprit here is low coolant. This will cause the engine protection light to flash and cause the engine to shut down
Verify the coolant is up and the sender connection is corrosion free.the sender is is the expansion tank. Inspect and let me know how you do.