Medium and Heavy Trucks

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I have a 1998 freightliner with a cummins 5.9 isb 24
I have a 1998 freightliner with a cummins 5.9 isb 24 valve...seems like it's running out of fuel...starts, runs for a couple seconds then coughs and stalls. I've replaced the lift pump and both fuel f… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
3,400 satisfied customers
Recently replaced an EGR cooler on a 2010 PACCAR PX-8,
Recently replaced an EGR cooler on a 2010 PACCAR PX-8, installed the updated Cooler due to “loosing” coolant and no leaks found. Disconnect the exhaust manifold side of EGR cooler and had approx. a sh… read more
Mike
Mike
Triage Tech/Shop Foreman
Associates
208 satisfied customers
I HAVE 2008 FRIEGHTLINER COLUMBIA with detriot 60 series
I HAVE 2008 FRIEGHTLINER COLUMBIA with detriot 60 series motor. My truck heatup and after 5 to 10 mints its came at normal like its goes more than 220 and then came back at normal after 5 to mints. Wh… read more
Roy
Roy
shop foreman
Associate Degree
5,347 satisfied customers
I'm getting a STOP ENGINE light on my recently purchased,
I'm getting a STOP ENGINE light on my recently purchased, 2008 Tiffin motorhome. The engine is a 300hp, Cummins ISB 6.7L CM2150, with 43,000 miles . What could the problem be and can I fix it ? … read more
Mike
Mike
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Associates
208 satisfied customers
My temp gauge is reading 200 to 225 all the time all the
my temp gauge is reading 200 to 225 all the time all the sudden it keeps shutting down the motor red light flashing stop engine gets up to 250 i pull over immediately and laser temp the motor and it s… read more
Roy
Roy
shop foreman
Associate Degree
5,347 satisfied customers
I have a 2008 class A motor home with the Cummins 5.9 ISO
I have a 2008 class A motor home with the Cummins 5.9 ISO engine. Has 71K on odometer, I've owned it for 2 years. Came back from a 400 mile trip, parked it (for 2 weeks) started it up this morning and… read more
timdieseltech
timdieseltech
diesel tech
Vocational, Technical or Trade School
111 satisfied customers
I have a school bus with an isb Cummins, it will not start
I have a school bus with an isb Cummins, it will not start when the engine is cold unless the block heater is plugged in. Starts great when warm, but will not fire after it cools off. I've had interna… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
9,538 satisfied customers
I have a 2005 jcb mini cx backhoe, it keeps leaking
I have a 2005 jcb mini cx backhoe , it keeps leaking hydraulic fluid out of the vent on top of the reservoir , the vent cap on jcb seems to be a check valve of some sort, I installed a new one oem fro… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
9,538 satisfied customers
Cummins 6.7L ISB, #73621214, Need help locating the coolant
Cummins 6.7L ISB, #73621214, Need help locating the coolant level sensor signal wire. We believe it is the J2 connector #35, but want to be sure. If so, which connector is J2?… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
203 satisfied customers
2011 IHC 8600 with maxx force engine. Had a friend trucking
2011 IHC 8600 with maxx force engine. Had a friend trucking for me last fall. Left it in the field last fall and a cornstalk opened the petcock on the radiator lost all the coolant. They refilled it s… read more
Curtis B.
Curtis B.
Retired service manager
Associate Degree
3,493 satisfied customers
I have a Motorhome with a Freightliner Chassis and a Cummins
I have a Motorhome with a Freightliner Chassis and a Cummins ISB Engine. The problem is that after 300 miles during one day, the rear right (passenger side) wheels started a vibration that required dr… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
9,538 satisfied customers
I have a m11 Cummings 1994, the check engine light comes on
I have a m11 Cummings 1994 , the check engine light comes on then the stop engine. appears to happen in hotter weather have changed the coolant level sensor 2 times. had in shop 3 times and still same… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
9,538 satisfied customers
Freightliner 2001 problems with front cab heater changed
Freightliner 2001 problems with front cab heater changed valve on firewall changed sensor on fan changed dashboard knob - no results! Can you help me?… read more
Roy
Roy
shop foreman
Associate Degree
5,347 satisfied customers
I have a 2002 isb Cummings in a newmar motor home 300 hp get a check engine lite when off
I have a 2002 isb Cummings in a newmar motor home 300 hp get a check engine lite when off throdle goes into limp mode and also under full throdle it skips about every 5 seconds hook up code reader get… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
203 satisfied customers
Hello Wayne I have this same problem I don't under stand what
Hello Wayne I have this same problem I don't under stand what your a telling this gentleman to do… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
3,400 satisfied customers
I have an issue with a 99 S60 12.7 after changing the ther
I have an issue with a 99 S60 12.7 after changing the thermostats. The temp gauge doesn't go above 184F and I have an alarm on the upper dash area near the visor (1999 Kenworth) that is RED and says H… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
3,400 satisfied customers
Answers from Two Experts requested: 2008 Fleetwood Discovery motorhome with Cummins 6.3ISL
2008 Fleetwood Discovery motorhome with Cummins 6.3ISL; has about 20k miles now. Have pulled a 6T trailer for years without any trouble relative to coolant temp, all of a sudden any hill I have to cli… read more
Don
Don
fleet superintendent
Vocational, Technical or Trade Scho
1,631 satisfied customers
Have a 300 turbo diesel in an older motor home. Motor
Have a 300 cumming turbo diesel in an older motor home. Motor gauges show Im overheated especially in hill county (west) When actually I do not believe it is. If it were that hot (redlined) I would ha… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
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