Medium and Heavy Trucks

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Freightliner century with detroit 12.7 loosing power going
freightliner century with detroit 12.7 loosing power going up hills and acceleration lagging changed TPS the Turbo boost sensor all oil lines and nothing while driving one time started with small misf… read more
Roy Belding
Roy Belding
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I have a 2004 Freightliner with a Cat C7 that I am having
I have a 2004 Freightliner with a Cat C7 that I am having issue with. … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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Extreme pressure in coolant system. New radiator and head
Extreme pressure in coolant system. New radiator and head gasket. Still builds massive pressure within 5seconds idle time. Pushes coolant out overflow hose. Never got hot no smoke no spidering or skip… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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I have a 2004 C-15 Acert Single turbo conversion Peterbilt
I have a 2004 C-15 Acert Single turbo conversion Peterbilt 379. Recently I have been getting a vibration in the truck. It is most prevalent under load and in gears 16th to 18th. Engine runs rough at R… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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Have replaced all six injectors and down loaded trim files
have replaced all six injectors and down loaded trim files performed overhead adjustment and cylinder cutout all check ok . but still has knock during acceleration … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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To. CAT-MAN, On a 2005 Freightliner columbia with Cat engine
To. CAT-MAN, On a 2005 Freightliner columbia with Cat engine C13 serial #Kcb17832 when driving engine shakes and hesitates on low Rpms 1300 below and rpm gauge is not stable, needle goes up and down w… read more
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Cat Man
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06 freightliner columbia,60 series going down the road and
06 freightliner columbia,60 series going down the road and itjust shut down, readout on dash said no eng, fault 01 and when you try to start it says icu 140 towed in to shop,mechanic got a code 168 … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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Caterpillar C7 ACERT in a 2005 Freightliner M2. Engine was
Caterpillar C7 ACERT in a 2005 Freightliner M2. Engine was using oil and low on power. Owner wanted new engine. Removed engine and installed reman long block. Had to transfer oil pan and main oil pump… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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I own a 2006 CL 120. Truck was taken to an authorized
I own a 2006 CL 120. Truck was taken to an authorized Freightliner dealer to replace injector #3 and troubleshoot intermittent CEL (turns out the VNT Vanes were not responding and used DDDL to activat… read more
Roy Belding
Roy Belding
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I've got '06 T600 with C15 acert and 10 speed ultrashift
I've got '06 T600 with C15 acert and 10 speed ultrashift Eaton in it.Engine serial is MXS 36937. The problem it seems to come from the engine. It stutters and shakes at low RPM (700-1280)it shows up w… read more
Cat Man
Cat Man
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Buddy, I have a 2007 Columbia X35320, with a 14 liter 475 hp
Hi buddy, I have a 2007 Columbia X35320, with a 14 liter 475 hp series 60. The problem I'm having has cost a lot of money and know one seems to be able to figure it out. Loaded or empty on any kind gr… read more
Roy Belding
Roy Belding
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Good morning I have a freightliner columbia 2009 thrown
Good morning I have a freightliner columbia 2009 thrown black smoke I already changed injector o ring egr valve actuator still throwing black smoke when it's loaded or empty… read more
Roy Belding
Roy Belding
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I working C7 Acert with diesel in the oil with major smoke,
I working C7 Acert with diesel in the oil with major smoke, problem started when someone he ran out of fuel and use starter fluid to start, I inspected and found bend push rod on intake valve #3 cylin… read more
Cat Man
Cat Man
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Vocational, Technical or Trade Scho
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06 387 peterbilt with a 475 acert caterpillar. blue-ish white
06 387 peterbilt with a 475 acert caterpillar. blue-ish white smoke comes the exhaust on startup. There is a slight miss or skip until u press the accelerator. There is no apparent loss of power and t… read more
Cat Man
Cat Man
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I have a question: Kenworth 3406E ESN:1lw32043 Truck came
I have a question: Kenworth 3406E ESN:1lw32043 Truck came in with a miss. #1 injector had low response time, replaced injector. 1 & 5 have low response times now. could find nothing wrong with electri… read more
Cat Man
Cat Man
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2000 freightliner I the a 3406E Caterpillar engine. Had diesel
2000 freightliner I the a 3406E Caterpillar engine. Had diesel in the water Removed injectors and kept everything in order found a blown O-ring I replaced all the o-rings and installed everything to i… read more
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Cat Man
Cat Engine Expert
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i have a cat c15 acert the engine vibrate very much on idealing
i have a cat c15 acert the engine vibrate very much on idealing and turns out to be ok when we increase rpm what could be the problem. need tune-up or something else.… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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My ken worth take more fuel and loose power after valve set
My ken worth take more fuel and loose power after valve set .it is 2006 c15 with 1.2 million kilometre.it has 3.55 ratio with 13 speed tyranny. i pull gross weight not more than 50,000 to 60,000 lbs a… read more
Steve
Steve
Self Employed
High School or GED
30 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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