Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
I have a Hvac2 spn 1548 5. I changed the temp sensor in back
I have a Hvac2 spn 1548 5. I changed the temp sensor in back And in front of inside The cab. Ac is working fine. Fan turns on and off. What I do notice also is Ac module has a delay when Ac is turned … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
Truck running too cool. C15 6nz had thermostat replaced.
Truck running too cool. C15 6nz had thermostat replaced. After warmup, takes 20 miles to get temp to 190. Temp drops 15 degrees going thru a small town, then it will pick back up in few miles. At 800 … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
2006 international sba 4300. Driver complains that he
2006 international sba 4300. Driver complains that he overheated. He claims the lower radiator hose felt frozen last night and the truck overheated. Checked coolant reservoir and found it mostly empty… read more
Alex Olsen
Alex Olsen
auto/diesel/industrial
524 satisfied customers
2004 cat acert c15 Diesel engine over heats only when boost
2004 cat acert c15 Diesel engine over heats only when boost pressure reaches over 30 psi with light loads and 17 psi with heavy loads. No coolant loss or oil. Compression is good on all cylinders. Wil… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,218 satisfied customers
2007 Peterbilt 335 Cummins 8.3 ISC. SN 46644819...originally
2007 Peterbilt 335 Cummins 8.3 ISC. SN 46644819...originally brought in bc of loss of power & heavy smoke...replaced injectors (all 6), replaced #2 piston & sleeve, machine shop checked heads but no m… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
Catman I have a 6nz and it has crank case pressure. It has
catman I have a 6nz and it has crank case pressure. It has also been burning oil. It is pushing oil as well as white smoke out of the blow by tube heavily and has oil drips from the rear expansion joi… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,218 satisfied customers
The driver stopped night and turned the motor off. This
The driver stopped for the night and turned the motor off. This morning it cranked and cranked but would not start. He was at a TA so he got their shop to change the fuel filters. It still would not s… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
2000 N14 cummins loosing coolant runs great, no overheat, no
2000 N14 cummins loosing coolant runs great, no overheat, no mixing of any fluids, will loose coolant fast 1 gallon in a few hours. can see steam coming from blow by and oil fill tube.… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
Catman I hae a 6nz that we have rebuilt. The block was decked
catman I hae a 6nz that we have rebuilt. The block was decked and we did have trouble with t blowing head gaskets in past, we had a accert crank in it along with those pistons and so on. We changed it… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,218 satisfied customers
I have Detroit s60 it mixed diesel in the oil panel I takes to the sh
I have Detroit s60 it mixed diesel in the oil panel I takes to the shop they removed all 6 injector and they said number 2 is bad they change number2 and the put the rest back in with new o ring start… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
Hey Cat Man. I have a 2003 pete with a c15 6nz in it. It runs
Hey Cat Man. I have a 2003 pete with a c15 6nz in it. It runs great with no water or oil loss since an out of frame 115,000 miles ago. Since the rebuild it's ran hot. I've replaced the radiator and th… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,218 satisfied customers
I have changed the thermostat and fan hub but can't get any
I have changed the thermostat and fan hub but can't get any heat inside the cab. I am being told that the head gasket is causing compression in the cooling system… read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,571 satisfied customers
I have an ISX with disappearing coolant and some oil in the coolant. I'm losing about
I have an ISX with disappearing coolant and some oil in the coolant. I'm losing about 1 qt/100 miles of coolant and the oil loss is not enough to detect a loss from the dipstick but it is apparent in … read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
Hey Dan Its Richard we are still having a problem with our
Hey Dan Its Richard we are still having a problem with our 2006 Hino the temperature is going to the hot and the heater gets cold and hot, but when the temperature goes up towards the hot the heater g… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have a 2010 international prostar with a coolant issue. Yesterday
I have a 2010 international prostar with a coolant issue. Yesterday I was driving in Florida and all of a sudden the temp which usually sits on 180 dropped all the way down kind of gradually over 10 m… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
Hey, I have a 2008 kw with a isx. Has DPF and EGR. I have
Hey, I have a 2008 kw with a isx. Has DPF and EGR. I have not done any deletes on it (don't really think its worth it). Engine runs great, normal power, never overheats, no excess pressure in coolant … read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
international 4900 series: I have 2 international 4900 series
I have 2 international 4900 series trucks my problem is overheating. The trucks seem to run fine when all of a sudden the temperature spikes the truck looses heat and coolant circulation. I have chang… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have a 6NZ and blowing blue smoke, we have changed the #4
I have a 6NZ and blowing blue smoke, we have changed the #4 injector, we did change this injector because of performing a cut out test on each cylinder. After replacing the injector setting the valves… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,218 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

4,737 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

10,218 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

4,023 satisfied customers

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

Jeremy

Jeremy

Certified Truck/Bus Technician

2,740 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

1,700 satisfied customers

All types of Cummins applications

Curtis B.

Curtis B.

Technician

1,571 satisfied customers

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

Chris (aka-Moose)

Chris (aka-Moose)

Technician

353 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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