Medium and Heavy Trucks

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I got 3406e 99 2ws33048 overhauled ,no power .no boost no
I got 3406e 99 2ws33048 overhauled ,no power .no boost no air leaks,80 psi fuel pressure. Pressure sensor replace … read more
NicholasM1019
NicholasM1019
Diesel Technician
Vocational, Technical or Trade School
10 satisfied customers
2005 GMC C6500 cat C7 ss#KAL79927 no power and will not rev
2005 GMC C6500 cat C7 ss#KAL79927 no power and will not rev past 1500 rpms fuel pressure 80-90 psi. boost at 1500 rpms is 1.1 psi can not find any leaks have checked another truck that has power and r… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
We have replaced a c-7 "KAL" with a FMM, intake, ecm, turbo,
We have replaced a c-7 "KAL" with a FMM, intake, ecm, turbo, are from the KAL, we programmed the injector trim files into the ECM, truck runs well, boosts 21 psi, the only thing that it lacks is power… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
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
5,234 satisfied customers
Having problems with a 2014 mack MP8. Truck seems to buck or
Having problems with a 2014 mack MP8. Truck seems to buck or shudder around 1400 rpm. Seems to be more of an issue when cool in the morning. Truck is starting fine. Injectors were updated with stainle… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
442 satisfied customers
I have a 3406E cat serial number 5EK 550 HP I cannot get
I have a 3406E cat serial number 5EK 550 HP I cannot get more than 18 to 20 PSI of turbo boost before this started I would getting 32 PSI it started dropping gradually over a few weeks period I have c… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
We put a Cummins N14 celect plus 525 in a 2010 Kenworth. We
We put a Cummins N14 celect plus 525 in a 2010 Kenworth. We got the wiring harness and datalink box all wired up and everything works fine, all the gauges, switches jakes everything. But when driving … read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
I have a 3406c only 15 psi boost I have turn screws all the
I have a 3406c only 15 psi boost I have turn screws all the way out both, replaced all fuel lines and filters,still no change ,it has a little black fuel smoke on low side of trans however nothing on … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
Cat Man, I have a 3406 3ZJ54893 that pulls strong until
Cat Man, I have a 3406 3ZJ54893 that pulls strong until about 1600-1700 rpms then just slowly pulls to 2000 rpm. We changed the fuel filters but that didn't change anything. Where should I go next? Al… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
i have a dt466e runs good but loud doesnt sound like a dt44e
i have a dt466e runs good but loud doesnt sound like a dt44e should sometimes it sounds smooth… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
210 satisfied customers
Hallo Cat man, We have some problems with a C9 engine. It
Hallo Cat man, We have some problems with a C9 engine. It runs perfectly when no load but not when putting some load ( a turbine ) when engine is at 1800 RPM. The RPM drops a lot when under load. When… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
two years ago a small vibration started in my truck over the
two years ago a small vibration started in my truck over the next two years the vibration got very bad, then I blow the first clutch. in 6 months I have put 4 clutches in it and they only last for 400… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
Hi Cat Man, Iam working on 3406E Cat serial number 5EK78587.
Hi Cat Man, I'am working on 3406E Cat serial number 5EK78587. The engine runs really nice and it is able to get up to full RPM, the problem is the engine is making little to no boost ( 0.7 to 1 lbs) a… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
2005 International 4300 DT466, we have a lower power issue.
2005 International 4300 DT466, we have a lower power issue. Slight hesitation when tapping the pedal at start off and low power when running on the road. Truck starts easy, idles fine, icon pressure i… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
Hi, Im having a problem with a Cummins ISC with the CAPS fuel
Hi, I'm having a problem with a Cummins ISC with the CAPS fuel pump. It will not start when it's hot. 150 to 180 degrees engine temp. The only way it will start is using a little starting fluid. It st… read more
FIX-IT
FIX-IT
Comercial transport technician
Vocational, Technical or Trade Scho
829 satisfied customers
1997 t 800 kenworth want turn over 1600 rpm. trowing codes
1997 t 800 kenworth want turn over 1600 rpm. trowing codes 332 sid4 fmi5 234 pid190 fmi0 311 sid1 fmi6 351 sid254 fmi2 321 sid4 fmi6 sid5 fmi6 325 sid6 fmi5 315 sid2 fmi6 314 sid6 fmi6 324 sid fmi5 wa… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
we have 2006 freightliner business class M2 with C9 caterpillar
we have 2006 freightliner business class M2 with C9 caterpillar motor. Once it warms up (over 150 degrees) starts to blow heavy white/grey smoke. Worse under load and higher RPM's. No check engine lig… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
1996 pete with a 3406e. Fan will not come on when under load,
1996 pete with a 3406e. Fan will not come on when under load, the fan will cycle when stopped with brakes applied. Have changed fan stat and no difference. should kick in around 215, but will climb to… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 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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