Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
My oil dip stick is loose in my dump truck I hear a weird
My oil dip stick is loose in my dump truck I hear a weird noise pulled over shut off immediately. Had yo put 2 gallons of oil in it, it started shut down ant won't start now … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,563 satisfied customers
I just bought a used ford f750 forestry truck with a cat c7.
I just bought a used ford f750 forestry truck with a cat c7. Less than 300 mile off the lot and it is in full limp mode.showed an auto regen light. I cycled it. it went out and came bac on a few minut… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,293 satisfied customers
I have a cat c-15 6nz prefix. In a Kenworth t800. Every time
I have a cat c-15 6nz prefix. In a Kenworth t800. Every time you start it, it starts then almost dies and then it runs fine. When it almost dies the engine light is on then it goes out after it is run… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,293 satisfied customers
My cat 3126 will erratically throw a flashing check engine
my cat 3126 will erratically throw a flashing check engine code and the engine will reduce power. This issue comes and goes from time to time but does not seem constant as if the HEUI pump is going ba… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,293 satisfied customers
Started and stalled a while then quit anyway if the engine
started and stalled a while then quit anyway if the engine service light and wts light comes on it will run for a moment if not it will not can not get scanner to connect can not get cruise codes to p… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,747 satisfied customers
It's Chas again on our F-750 CAT C7. Now that the STOP
Daniel, It's Chas again on our F-750 CAT C7. Now that the STOP ENGINE light has cleared up and the truck is back in service I have been noticing slow lack of power on take off and acceleration and it … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
12,629 satisfied customers
2012 ford f650 6.7 commings no start pump primer seams good
2012 ford f650 6.7 commings no start pump primer seams good wood start and run for about 3 min. and die. I changed oil and now wont even fire. ck lite is on has history of e.g.r … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
12,629 satisfied customers
I have a 2007 Freightliner M2 106 with a 7.2L. When cold it
I have a 2007 Freightliner M2 106 with a 7.2L. When cold it runs fine until it hits 150 degrees. It then misses bad until it warms up to 190-200 degrees. … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,293 satisfied customers
I have an 02 3126 cat in a Chevy truck I don't know what the
I have an 02 3126 cat in a Chevy truck I don't know what the serial number is ***** it's been wiped off the sticker. I have all powers and ground to the ecm. But it will intermittently start. When it … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,293 satisfied customers
Have a problem with a 2000 gmc truck, 6500, 3126 cat diesel,
have a problem with a 2000 gmc truck, 6500, 3126 cat diesel, allason 545 transmission. diesel engine dies (but restarts ok) when switching gears from drive to reverse or park. engine must be warm. doe… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
12,629 satisfied customers
How do you perform the engine flash code diagnostic test whith
How do you perform the engine flash code diagnostic test whith a smart wheel? On older cats I know you can check with the cruise set switch, but this does not work on the smart wheel.. Any help would … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,293 satisfied customers
Got 04 ford f650 with a C7 starts and runs 10 mins then dies
got 04 ford f650 with a C7 starts and runs for about 10 mins then dies have to wait for about 5mins to restart truck has set for about 3 yrs put fresh fuel in @new fuel filters… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,293 satisfied customers
I have a cat c15 acert twin turbo engine... serial
Hello there, i have a cat c15 acert twin turbo engine... serial #MXS46458. I recently replaced the main and rod bearings on it. All bearings still looked in good condition BUT #4. Was badly worn. I no… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,293 satisfied customers
I am working on and 06 Pete 379 with a Cat C-15 MXS24605.
I am working on and 06 Pete 379 with a Cat C-15 MXS24605. The truck came in with a no start concern, died while driving down a rough road. Driver states it has new batteries and alternator in the last… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,293 satisfied customers
I have a GMC with a cat 3126 serial number 7as72171. It starts
I have a GMC with a cat 3126 serial number 7as72171. It starts fine and runs like a top. After about ten minutes on the road if you let off the gas and let the engine go below 1000 RMP the engine dies… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,293 satisfied customers
I have a 2008 ford F-650 with the 6.7L cummins, when calling
I have a 2008 ford F-650 with the 6.7L cummins, when calling for power at especially on inclines the engine light comes on and then when I ease for the gas pedal the light will go off, then I plugged … read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
hey Buddy, I am having a problem, actually its a off and on
hey Buddy, I am having a problem, actually its a off and on problem for the last 10 years, this past week my GMC, 1998 3126 CAT/420.000 mile engine will run excellent, full power, no smoke(ever), grea… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,293 satisfied customers
1999 international 4700. driving when truck felt like the
1999 international 4700 . driving when truck felt like the fuel was severly restricted.limped to side of road.Truck will start but idle's very rough and will not accelerate.an hour later I could start… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,747 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

12,629 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

5,293 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

4,563 satisfied customers

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

Jeremy

Jeremy

Certified Truck/Bus Technician

2,747 satisfied customers

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

cumminsdr

cumminsdr

Mechanic

1,824 satisfied customers

All types of Cummins applications

Curtis B.

Curtis B.

Technician

1,806 satisfied customers

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

Chris (aka-Moose)

Chris (aka-Moose)

Technician

462 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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