Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
I have a c16 CAT I just left the dealer from putting in an
I have a c16 CAT I just left the dealer from putting in an oil cooler, 45 mins into the ride oil temp and water temp are running higher than normal operating temp. Only running a load weighing 19k it … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I have 60 lbs of manifold pressure on a 2005 c15 acert twin
i have 60 lbs of manifold pressure on a 2005 c15 acert twin turbo … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have 1999. Kenworth T800 475 cat. 3406 E It's only making
I have 1999. Kenworth T800 475 cat. 3406 E It's only making about 15 psi boost - Low power - No codes in computer - I changed fuel filters and air filter and also checked air charge boots and tried to… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
I have an O7 Freightliner where is a C15 acert twin turbo at
I have an O7 Freightliner where is a C15 acert twin turbo at 475 horse I've driven it over 300,000 miles recently I had an overheating issue and it cos they had to crack and I had it in the shop and I… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,220 satisfied customers
I have a 2003 379 c15 6nz. My oil tempos at 220 with a new
I have a 2003 379 c15 6nz. My oil tempos at 220 with a new teltek gauge and sensor. My water temp shows around 220-225 when working the motor is working hard. I thought it sounds high. Have new thermo… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,220 satisfied customers
I have a bxs c-15 acert twin turbo that all the sudden m/t
i have a bxs c-15 acert twin turbo that all the sudden m/t started to overheat up tp 230 degrees stop making cab heat . the engine hs 560000 original miles on it , i replaced the thermostats and housi… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,220 satisfied customers
I'm a grain farmer and I'm looking to buy a used semi. I
I'm a grain farmer and I'm looking to buy a used semi. I have a Freightliner that I'm trading off. We also have a 2011 t800 curved glass Kenworth that I like but have had a couple of engine issues but… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 satisfied customers
A hissing sound behind the dash. If you are stopped there is
A hissing sound behind the dash. If you are stopped there is no sound and if you rev the engine there is no sound. If you are climbing a hill the sound gets louder and goes to nothing on flat. All the… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I own a 2005 Western Star log truck with a CAT 550 twin
I own a 2005 Western Star log truck with a CAT 550 twin turbo motor, my truck will just shut off as I'm going down the road, seems to be getting worse, now it takes longer to restart and it is happeni… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
GA-RP 2005 kenworth t800 log truck with c-15 twin turbo engine.
2005 kenworth t800 log truck with c-15 twin turbo engine. my problem I been haveing is my water temperature, on the flat roads it doesent come to temperature doesn't get more then 50 degres on gauge ,… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,220 satisfied customers
I have a 2005 Kenworth T800 with a c-15 cat engine. Truck is
I have a 2005 Kenworth T800 with a c-15 cat engine. Truck is overheating, the fan won't kick in and once I switch the fan to manual, the temperature stays high and doesn't drop. I replaced both thermo… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,220 satisfied customers
Have a 2005 ken worth t800 log truck with twin turbo cat c-15
Have a 2005 ken worth t800 log truck with twin turbo cat c-15 motor , was gonna change crankcase vent filter it's located in the top of valve cover , is there way to change filter or do I Gita replace… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,220 satisfied customers
Hello, New question about my N14 What can cause the oil temp.
Hello, New question about my N14 What can cause the oil temp. To raise almost to 250 degrees on any small hill or when turbo is boosting with even a light load and in level ground is about 225-235 wat… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
I have C-15 550 TWIN TURBO CAT, WITH 470,000 MILES ON IT.last
I have C-15 550 TWIN TURBO CAT, WITH 470,000 MILES ON IT.last year my oil was mixing in my radiator. i had it in the shop and the oil cooler was replaced, radiator flushed etc. one year later the prob… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,220 satisfied customers
I have a 2009 kenworth T660 that is blowing blue smoke . Only
I have a 2009 kenworth T660 that is blowing blue smoke . Only seems to do it when the turbo is at 20-35psi . Also does it going down hill with the jake on . Any ideas as to what this problem is ?… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
GMC c7000: I have a 96 cat 3116. It starts fine drives local
I have a 96 cat 3116. It starts fine drives local fine. It is a bucket truck so runs at 1000 rpm all day with no problems . When I climb a hill over 40 the motor runs out of power and sounds flat. I c… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,220 satisfied customers
what is the difference between a Kenworth T800 cab with curved
what is the difference between a Kenworth T800 cab with curved glass and one with flat glass? My cab with curved glass burnt and I can get one with flat glass but not sure how many differences there a… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 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
10,220 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

10,220 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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