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Related Medium and Heavy Trucks Questions
2002 Freightliner FL70 C7 3126 Cat Motor. First, over a year
2002 Freightliner FL70 C7 3126 Cat Motor . First, over a year ago, all dash lights and instrumentation including speedo just stopped working. Check engine light and fuel gauge do work. This truck has … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
15,095 satisfied customers
We have a high oil pressure issue on a 2009 freightliner
We have a high oil pressure issue on a 2009 freightliner with a 6.7 cummins reading 70 psi all the time … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
604 satisfied customers
I hav a c7. The truck had no power under load and surges up
Second opinion] I hav a c7 . The truck had no power under load and surges up and down when ur in the throttle. I pulled the fuel regulator. It was bad. Stuck open. I replaced it . Truck now runs bette… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
604 satisfied customers
I hav a c7. The truck had no power under load and surges up
I hav a c7 . The truck had no power under load and surges up and down when ur in the throttle. I pulled the fuel regulator. It was bad. Stuck open. I replaced it . Truck now runs better but still surg… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,353 satisfied customers
I have a 2006 International 4300 that occasionally
Good afternoon, I have a 2006 International 4300 that occasionally lopes/surges at idle & intermittently dies. VIN number is ***** No fault codes. I have swapped ICP regulator, cam sensor & intake man… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
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16v92 Detroit diesel ddec2. I have a power loss issue ever
16v92 Detroit diesel ddec2. I have a power loss issue ever since I found water in my raycor filters. I switched tanks to a known good tank and replace all filters primary and secondary. Engine slow to… read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,947 satisfied customers
I have a 2012 Internationañl Pro Star with a Maxxforce 13 In
I have a 2012 Internationañl Pro Star with a Maxxforce 13 In it. The thing surges sometimes especially at idle. I have got codes. SPN 354 FMI 4 which is Relative Humidity Signal out of range. And SPN … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
604 satisfied customers
I just bought a 205 F650 with a C7 in it and after running
I just bought a 205 F650 with a C7 in it and after running the truck and you pull to a stop or come to a stop light the engine surges, I have watched the IAP psi and there isn't much fluctuation and I… read more
Scott Anthony
Scott Anthony
Master Technician
HS Diploma
3 satisfied customers
I have a 3126 ECM that is sending desired Inj Act pressure
I have a 3126 ECM that is sending desired Inj Act pressure to 1450 at initial start than after about a minute it drops to 870 and runs smooth. For the minute is surging in RPM's. I have replaced every… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,353 satisfied customers
Cat Man I have a 2015 389 Pete 3406 E cat motor it has a
Cat Man I have a 2015 389 Pete 3406 E cat motor it has a miss all the time but it get worse as the day goes on and it seems to be worse at 1600 and 1700 rpm it has six new remain cAt injectors and tha… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,353 satisfied customers
I have a 2012 freightliner and my oil pressure starts high
I have a 2012 freightliner and my oil pressure starts high and my check engine light goes on then turns off as my pressure goes down … read more
timdieseltech
timdieseltech
lead diesel tech, shop owner
Vocational, Technical or Trade School
213 satisfied customers
I have a Cat 3126B with power loss/missing issue. When it
I have a Cat 3126B with power loss/missing issue. When it started it would miss then blow some blue smoke under load like climbing a grade or accelerating after a stop. They scanned it and foundcodes … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,353 satisfied customers
Goid afternoon I have a 2009 Freightliner Cascadia with the
Goid afternoon I have a 2009 Freightliner Cascadia with the series 60 14 L while under acceleration and park truck has a really bad surge and smokes a little white fuel pressure is okay EGR valve is n… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
15,095 satisfied customers
Cayman I've got a 2008 c15 acert cat that lopes at idle only
Hello Cayman I've got a 2008 c15 acert cat that lopes at idle only when it's warmed up. the loping idle is bad enough that the engine died. starts right back up. if you bump it up off idle it smoothes… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,353 satisfied customers
I have a ddec 6. Surges at high idle. Just did head gasket.
I have a ddec 6. Surges at high idle. Just did head gasket. … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
15,095 satisfied customers
2006 IH 4300, dt 466T. Truck runs good, no ck engine light,
2006 IH 4300, dt 466T. Truck runs good, no ck engine light, no codes. A little hard to start when cold, ICP is making desired. The main problem is once engine runs for just a few minutes, when at idle… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
10 months ago there was someone that you were helping
hello 10 months ago there was someone that you were helping with an idle surge problem and was corrected when the icp was unplugged. never seen a post on what fixed it. need some help thanks cliff… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
15,095 satisfied customers
2006 Pete with CAT C7. Truck has a fresh rebuild less than
2006 Pete with CAT C7. Truck has a fresh rebuild less than 200 hr ago. Truck was driving and had a sudden loss of power and they had trouble getting it up to 15 mph, (OF COURSE THAT IS WHAT MY DRIVER … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,353 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

15,095 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

5,353 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

5,115 satisfied customers

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

Jeremy

Jeremy

Certified Truck/Bus Technician

2,756 satisfied customers

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

Curtis B.

Curtis B.

Technician

1,947 satisfied customers

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

cumminsdr

cumminsdr

Mechanic

1,886 satisfied customers

All types of Cummins applications

Chris (aka-Moose)

Chris (aka-Moose)

Technician

641 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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