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Related Medium and Heavy Trucks Questions
Have ISX cummins that is slobering out of exhaust behind
Have ISX cummins that is slobering out of exhaust behind turbo. Believe it is fuel. Can you tell me cause … read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
Isx cummins we have low oil pressure also over full oil
isx cummins we have low oil pressure also over full oil level it does smell like fuel … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
Getting fuel in the oil I have replaced injectors o rings
getting fuel in the oil I have replaced injectors o rings Put new head a year ago what else could cause this Its a Cummins isx engine ser number 79216434 … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
3,968 satisfied customers
I have a 11' 386 this only happens when i have a trailer
I have a 11' 386 this only happens when i have a trailer hooked when I step on the brakes I hear an air leak under the drivers seat and air leaks out of the trailer valve … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I have a 2011 ISX Cummins. It starting to burn more fuel
I have a 2011 ISX Cummins. It starting to burn more fuel than normal and its showing 3 codes. 553, spn157, fmi16. What could be causing this?… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
Saying fuel pressure delivery is the fault code and it wont
Saying fuel pressure delivery is the fault code and it wont start … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
3,968 satisfied customers
I have a 2011 386 peterbilt show DPF fuel pressure delivery
I have a 2011 386 peterbilt show DPF fuel pressure delivery code and a clogged dpf symbol but just had the dpf filters cleaned but symbol stays active for clogged … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
3,968 satisfied customers
08 Cummins ISX 386 peterbilt. Is overheating when it pulls a
08 Cummins ISX 386 peterbilt. Is overheating when it pulls a grade and engine shuts down … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
Fuel Rail Pressure Sign. 2013 Peterbelt 386, ISX 15 Cummins.
Last time around 2000 miles ago , This sign came, i went to peterbilt dealer, They changed the fuel filter, and SCR , NOX, Temp sensor. Then I run around 500 miles this sign came again, when I try to climb at moutain. Then go back to same dealer back, they said bettery cables loose that the reason. Run again 2000 miles now same sign came again on the mountain. … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
Fuel Rail Pressure Sign. 2013 Peterbelt 386, ISX 15 Cummins.
Last time around 2000 miles ago , This sign came, i went to peterbilt dealer, They changed the fuel filter, and SCR , NOX, Temp sensor. Then I run around 500 miles this sign came again, when I try to climb at moutain. Then go back to same dealer back, they said bettery cables loose that the reason. Run again 2000 miles now same sign came again on the mountain. … read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
2009 386 with Cummins ISX. Lose throttle and engine light
2009 386 with Cummins ISX. Lose throttle and engine light comes on. Code is throttle position. replaced 2 tps's, both the harnesses to ECM, and the ECM. Added more grounding and cleaned all connection… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
2014 Peterbilt with Cummins isx leaks oil from the fuel pump
2014 Peterbilt with Cummins isx leaks oil from the fuel pump gear driving driver side by the power steering pump does this take a gasket or and o ring ?… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I have a 2012 Peterbilt with a Cummins ISX. the fan runs all
I have a 2012 Peterbilt with a Cummins ISX. the fan runs all the time. I changed the solenoid and fan switch. Still running. What's next ? … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I have an ISX 1 EGR DPF pushes coolant out the overflow, in
i have an ISX 1 EGR DPF pushes coolant out the overflow, in last two months have replaced egr cooler and compressor and have run tests for combustion gas tests also three times, system pressure tested… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
I have an ISX Cummins engine that is getting fuel into the
I have an ISX Cummins engine that is getting fuel into the engine oil I have already replaced injectors and o-rings what else could it be… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I have an ISX 565 signature cummins in a 1999 379 Peterbilt.
I have an ISX 565 signature cummins in a 1999 379 Peterbilt. I think I am getting oil in the fuel. It uses about 1 gal of oil every 4000 miles. The fuel is grey in color in the tank and in the filter.… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
We Have a 2008 386 Peterbilt with Cummins ISX Engine , Driver
We Have a 2008 386 Peterbilt with Cummins ISX Engine , Driver Says Oil Pressure is Fluctuwating Between 20 & 60 Lbs , Normal Pressure has been 38 lbs he changes Oil Filter & Made No Difference… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
Harness, fuses, what? Just got 2008 Peterbilt 386 with a Cummins
Harness, fuses, what? Just got 2008 Peterbilt 386 with a Cummins ISX Signature 600 out of MHC Denver. After having two (2) sensors replaced - the pressure sensor & the TPS Assy (which was under warran… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
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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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