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2013 mack gu813 dpf system fault active code aftertreatment…

2013 mack gu813 dpf system...
2013 mack gu813 dpf system fault active code aftertreatment 1 purge air actuator- bad intelligent device or component
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Customer reply replied 6 years ago
location of purge valve
Answered in 1 hour by:
10/3/2016
Technician: Jeremy, Certified Truck/Bus Technician replied 6 years ago
Jeremy
Jeremy, Certified Truck/Bus Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 4,370
Experience: ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, Network Engineer specializing in CAN faults, Aftertertreatment, and vehicle communications
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My name is ***** ***** I will assist you with your question today.

I'm an independent contractor and I don't get paid until a rating has been made.

We can go back and forth as needed to help resolve the issue you are having. Follow ups are free after ratings, so rate in confidence!

What engine are you running in this Mack?

What was the code number? P 1130 or 1131 or is it different?

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Technician: Jeremy, Certified Truck/Bus Technician replied 6 years ago

The purge valve is the doser valve aka the 7th injector.

Jeremy
Jeremy, Certified Truck/Bus Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 4,370
Experience: ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, Network Engineer specializing in CAN faults, Aftertertreatment, and vehicle communications
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Jeremy and 87 other Medium and Heavy Trucks Specialists are ready to help you
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Customer reply replied 6 years ago
mack mp7 engine has no derate either does the hydrocarbon doser have a purge valve as well has an air going to valve
code number is *****
Technician: Jeremy, Certified Truck/Bus Technician replied 6 years ago

There is an air valve that feeds the doser. If you follow the lines off the doser box, you will see where it goes to an air valve on the right rear of the engine. That valve gets debris in it often and will code out.

Remove it, clean it, and retry it. If it fails again, replace that air valve.

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Jeremy, Certified Truck/Bus Technician
Category: Medium and Heavy Trucks
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