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go-west..
go-west.., Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 1160
Experience:  Technican with 20 years experience focused on engines and electrical.
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I have a 2005 Newmar Essex 500 Cummings. JA: Thanks. Can

Customer Question

I have a 2005 Newmar Essex 500 Cummings.
JA: Thanks. Can you give me any more details about your issue?
Customer: Yes it over heats when I go up a constant grade and is not as bad if I turn on the heat.
JA: OK got it. Last thing — Technicians generally expect a deposit of about $54 to help with your type of question (you only pay if satisfied). Now I'm going to take you to a page to place a secure deposit with JustAnswer. Don't worry, this chat is saved. After that, we will finish helping you.
Submitted: 9 months ago.
Category: Medium and Heavy Trucks
Expert:  go-west.. replied 9 months ago.
good daydo you have your esn ??are you adding coolant ??
Expert:  go-west.. replied 9 months ago.
esn= engine serial number
Customer: replied 9 months ago.
Hi,
It is a Cummins ISM 500
Serial number 35095590.
Fluid level is full. Had it serviced they filled level and tightened hose. Flushed radiator. Changed air filter. Runs fine on no incline. I had winter diesel in it added fresh fuel today. Cruise or air on incline heats up.
Thank you,
John
Expert:  go-west.. replied 9 months ago.
Is the check engine light coming on at all when it gets warm?
Do you hear the fan coming on. You may need somebody in the back to here this
Customer: replied 9 months ago.
Check engine light comes on do not or can hear if fan comes on.
Expert:  go-west.. replied 9 months ago.
im wondering if you have a fan issue..to know what the code is would be nice as well, the most probable causes are.. coolant temp sendersomething blocking the rad like a winter frontlow levelrad fins damagedcollapsed rad hoseloose fan beltbad oil coolerbad rad capexcessively high air intake temp---this one could be because of a bad air cleaner..pluggedinspect it and let me know what you find

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