Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
Semi truck. Semi truck. Is there a diesel mechanic. Need
Semi truck JA: What is the make/model/year of your car? Customer: semi truck JA: Are you fixing your vehicle yourself? What have you tried so far? Customer: is there a diesel mechanic JA: How old is t… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,307 satisfied customers
99 freightliner xl with cat 3406. Will crank and not start.
99 freightliner xl with cat 3406. Will crank and not start. If ether is sprayed into it, it will run until the ether is used up. Computer has been tested and is OK, fuel filters replaced, hand primer … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
I have a 2006 379 pete with a mxs68502c15 cat and the boost
I have a 2006 379 pete with a mxs68502c15 cat and the boost psi drops from 45psi to 25psi in high gear and wont go over 25psi boost after going thru the gears then you can stop cut the truck off resta… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
I have 1999. Kenworth T800 475 cat. 3406 E It's only making
I have 1999. Kenworth T800 475 cat. 3406 E It's only making about 15 psi boost - Low power - No codes in computer - I changed fuel filters and air filter and also checked air charge boots and tried to… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
210 satisfied customers
I've got a 3406 e lots of blue smoke a lot of power loss. It
I've got a 3406 e lots of blue smoke a lot of power loss. It runs good for awhile then starts missing and blue smoking. Engine was rebuilt one year ago ran fine until the last few weeks. I put all 6in… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I have a 96 aeromax with a 3406 cat two weeks ago while
I have a 96 aeromax with a 3406 cat two weeks ago while driving the truck lost all power and died started right back up and ran fine for a few minutes then did it again but this time I pump the fuel p… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
I have a 3406 CAT its losing power, motor runs smooth,
I have a 3406 B CAT its losing power , motor runs smooth, sometimes when you decelerate engine will cut off and it takes a couple tries to restart. The turbo has a built in boost control could it be a… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
I have 2001 peterbilt with a CAT engine... i am having fuel
Hello I have 2001 peterbilt with a CAT engine... i am having fuel problema.. the driver drove the truck low on fuel and started having issues with power... He refill the tanks to about half of the tan… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
I HAVE A 2009 FREIGHT-LINER WITH A CAT C15 engine as 700k
I HAVE A 2009 FREIGHT-LINER WITH A CAT C15 engine as 700k miles. Runs great on a flat surface but ones it hit a hill power drops to 10 mph. I change the turbo, fuel pump and many more things, I can no… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
2007 MP7 runs good in lower ear but looses power in higher
2007 MP7 runs good in lower ear but looses power in higher gear (spped ) no manifold pressure … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
Are you familiar with cummins ism? Im having a problem with
Im having a problem with my truck so what do i do? I dont know how this works … read more
Alex Olsen
Alex Olsen
auto/diesel/industrial
524 satisfied customers
I have a 94 KW T600b with 3406 C Peek 400 hp, Just inframed
I have a 94 KW T600b with 3406 C Peek 400 hp, Just inframed runs good but only 17-18 lbs bost? That Normal?… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
I have a truck with a 3406 Cat which is running rough. you
Hello, I have a truck with a 3406 Cat which is running rough. you can see oil and fuel it seems leaking out the turbo and exhaust piping. It runs like it has lost an injector. There are no codes on th… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have a Cat 3406 with a OR7202 turbo and the SN calls for
I have a Cat 3406 with a OR7202 turbo and the SN calls for a OR7200 the 7202 ha no waste gate?did someone change to bypass that?… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
I HAVE A 2000 KENWORTH WITH A 3406 CAT ENGINE RUNS ROUGHT
I HAVE A 2000 KENWORTH WITH A 3406 CAT ENGINE RUNS ROUGHT AT 950 RPM WHEN HOT, LIKE A MISS BUT CANT PIN POINT A CYLINDER ALSO WHEN UP SHIFTING THERE IS A POWER LOSS AND HESITIATION. IF YOU CAN GET PAS… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
ON A TRIP TO Utah TRUCK WAS STARTING AND RUNNING FINE. I SLEPT
ON A TRIP TO Utah TRUCK WAS STARTING AND RUNNING FINE. I SLEPT IN WALLCOTT, IOWA. WHEN I TRIED TO START THE TRUCK IT HAD TO CRANK A LONG TIME. I THOUGHT IT MIGHT BE THE COLD WEATHER. WHEN I GOT INTO O… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
I have a 94 kenworth t800 with 425HP 3406B cat. Serial prefix
I have a 94 kenworth t800 with 425HP 3406B cat. Serial prefix 3ZJ. I'm having a fueling or timing problem I believe. It has developed a miss and lost power. Has new nozzles . After idling for short ti… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
I own a 2005 Cat c-15 with twin turbo, engine running fine,
I own a 2005 Cat c-15 with twin turbo, engine running fine, sat for a day, started it up and I have no turbo boost, any sugestions ???… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

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Owner at DJ Wilson

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I am ASE Master Truck Certified.

Wayne

Wayne

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

Jeremy

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Curtis B.

Curtis B.

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

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Chris (aka-Moose)

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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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