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In the there is hot air blowing from the vents but in the
in the bunk there is hot air blowing from the vents but in the cab it is cold air … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
430 satisfied customers
Cummins isx15 code 4340 I changed the def line heater and
Cummins isx15 code 4340 I changed the def line heater and code is still popping up … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
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I have a cummins isx15 2250 with 500000 miles. I keep
Hello. I have a cummins isx15 2250 with 500000 miles. I keep getting spn157 fmi 0. I changed fuel pump and filters what should I do next? … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
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430 satisfied customers
I have a kenworth t660 with a Cummins isx15 engine. I'm
I have a kenworth t660 with a Cummins isx15 engine. I'm getting coolant in the fuel. I have replaced the tank heaters and the filter base for the heated fuel water seperator. The cummins dealer is tel… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I have problem whit my oil temperature goin high close to
Hi i have problem whit my oil temperature goin high close to 250 i change antifrez two times change termostat can u help me … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I have an ISX 15 engine I'm getting coolant in the fuel the
I have an ISX 15 engine I'm getting coolant in the fuel the injector cups have been already shimmed with the retaining ring authorized by Cummins. The fuel water separator is not hit by the coolant an… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
430 satisfied customers
Cummins ISX15 ... oil leak front of motor passenger side.
cummins ISX15 ... oil leak front of motor passenger side … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
430 satisfied customers
I have a Cummins ISX15 built 01/13 in a 2014 Kenworth T660.
I have a Cummins ISX15 built 01/13 in a 2014 Kenworth T660. It's not holding engine temperature. At startup it warms up slow, on a long grade it warms up and runs normal engine temperatures. The heate… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I am using 2 quarts of anti-freeze a day in a 2016 Kenworth
I am using 2 quarts of anti-freeze a day in a 2016 Kenworth with a Cummins 550 ISX. Checked the EGR cooler and both sides of the turbo and … read more
cumminsdr
cumminsdr
Mechanic
High School or GED
4,294 satisfied customers
I have kenworth w900 with isx15. 2014 kenworth w900 Cummins
Its not staying warm when idling soon as i turn the heater more then one click it goes cold … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have an 2013 kenworth with an ISX15. The oil is getting
I have an 2013 kenworth with an ISX15. The oil is getting really hot. Once it gets hot you can see the oil pressure starting to drop slightly. Wanted to know if I can get the location of oil thermosta… read more
Roy Belding
Roy Belding
7,579 satisfied customers
Catman I have eng sn SDP04125 it is not producing heat in
catman I have eng sn SDP04125 it is not producing heat in the cab. Engine is at operating temp around 200F. I disconnected in line to cab heater core coolant pumps out of line from engine. I then disc… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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Coolant and oil temp hitting 250 + went into limp mode
Coolant and oil temp hitting 250 + went into limp mode climbing hill lost power when it gets that high … read more
Jeremy
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Certified Truck/Bus Technician
Associate Degree
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I have changed the thermostat and fan hub but can't get any
I have changed the thermostat and fan hub but can't get any heat inside the cab. I am being told that the head gasket is causing compression in the cooling system… read more
Curtis B.
Curtis B.
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Associate Degree
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I have a cummins isx in a t660 kenworth and I made a mistake
I have a cummins isx in a t660 kenworth and I made a mistake and took off some heater lines off the block going to the firewall and a black box that has electric line that plugs in and also has heater… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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I have an issue with a 99 S60 12.7 after changing the ther
I have an issue with a 99 S60 12.7 after changing the thermostats. The temp gauge doesn't go above 184F and I have an alarm on the upper dash area near the visor (1999 Kenworth) that is RED and says H… read more
Wayne
Wayne
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Vocational, Technical or Trade Scho
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I have an ISX15 built in early 2013 and am wanting to switch
I have an ISX15 built in early 2013 and am wanting to switch to full synthetic engine oil. My first question is about the oil Mobil Delvac 1 5w30, or Shell T6 5w40 both brands are easy to find but wit… read more
Joe
Joe
Service Technician
Associate Degree
853 satisfied customers
Im trying to replace my leaking heater core on my 2005
I'm trying to replace my leaking bunk heater core on my 2005 Freightliner day cab. I've been able to remove all my dash panel, the lower duct and heater core service cover. However I'm stucked at the … read more
FIX-IT
FIX-IT
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Meet the Experts:

Daniel Wilson

Daniel Wilson

4,737 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

5,234 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

4,023 satisfied customers

worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling

Jeremy

Jeremy

Certified Truck/Bus Technician

2,740 satisfied customers

ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, Network Engineer specializing in CAN faults, Aftertertreatment, and vehicle communications

cumminsdr

cumminsdr

Mechanic

4,294 satisfied customers

All types of Cummins applications

Curtis B.

Curtis B.

Technician

1,571 satisfied customers

Technician turned service manager on multiple lines of trucks and engines, used in industry.

Chris (aka-Moose)

Chris (aka-Moose)

Technician

353 satisfied customers

24 years of experience diagnosing & repairing

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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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