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I have a 2012 ISX Cummins. The egr and DPF has been deleted.

Customer Question
Hi.. I have a...

Hi.. I have a 2012 ISX Cummins. The egr and DPF has been deleted. Going down the road, pulling hills, interstate driving, truck runs perfect. When you slow down in traffic, or stop and let truck idle, coolant pushes over to overflow side of two part tank. If you rev motor above 1500 rpm, coolant goes back to other side. Motor does not get hot, no smoke, etc. Ive changed thermostat, examined waterpump impeller, changed compressor head.

Mechanic's Assistant: Sometimes things that you think will be really complicated end up being easy to fix. The Heavy Truck Mechanic I'm going to connect you with knows all the tricks and shortcuts.

I would appreciate any help!!! I'm hoping I'm over thinking and missing something simple?

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

After I shut off engine, you can hear coolant girgling, and sounds like air moving in the system. Ver noticeable around the Thermostat area

Submitted: 1 year ago.Category: Medium and Heavy Trucks
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Answered in 5 minutes by:
7/29/2017
Technician: Daniel Wilson,
 replied 1 year ago
Daniel Wilson
Category: Medium and Heavy Trucks
Satisfied Customers: 2,825
Experience: Owner at DJ Wilson
Verified

Hi my name is***** will be glad to try to help. Are there any codes being thrown? Pressure test the cooling system and check for signs of coolant in the crankcase oil and exhaust for white ash deposits indicating coolant burning in the exhaust which normally would cause smoke. Let me know what the pressure test reveals.

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Technician: Daniel Wilson,
 replied 11 months ago

Hi, Did you get this resolved?

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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