Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
The engine fan will not come on automatically when water
The engine fan will not come on automatically when water temp gets high under a load. The fan works when I turn on manual switch and the fan works with the high pressure side of A/C. this is a C-16 en… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,237 satisfied customers
I have a 2005 Peterbilt 379 I am looking for a wiring
Good morning I have a 2005 Peterbilt 379 I am looking for a wiring diagram on the fan control. Fan appears to be running all the time. I supplied air straight to the fan clutch and the fan turns off. … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
I have a 97 379 I keep blowing the fuse that runs the fan
I have a 97 379 I keep blowing the fuse that runs the fan voltage tack, odometer, and accessory … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have a 1996 peterbilt 378 with a 3176 cat i am swapping to
i have a 1996 peterbilt 378 with a 3176 cat i am swapping to a c12 cat from a 2003 peterbilt, looking for wiring diagram to convert harness … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
2000 peterbilt with cat c12 engine Jake's dont work I want
2000 peterbilt with cat c12 engine Jake's dont work I want to wire them directly with my own switch … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have a CAT C12 and the Fan doesn't turn on automatically
I have a CAT C12 and the Fan doesn't turn on automatically only when I turn it on manually. However it does turn on automatically when the AC is on … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,237 satisfied customers
I changed rad in 99 Pete 379 so drained Freon out of a/c. My
I changed rad in 99 Pete 379 so drained Freon out of a/c. My engine fan doesn't stop unless I unhook air to fan hub. Engine water temp gauge doesn't seem to work now either. Everything worked before t… read more
Keiphun Sowell
Keiphun Sowell
AutoDiesel Technology
1,305 satisfied customers
My engine fan will not turn on. Either with the manual
My engine fan will not turn on. Either with the manual switch or just letting the ecm do it by water temp. I've replaced the fan air solenoid and it still will not engage. Unless I cut the wires to th… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,237 satisfied customers
Cat Man, I have a C12 Cat s/n ALS00353 engine fan is staying
Cat Man,I have a C12 Cat s/n ALS00353 engine fan is staying on all the time, I do have power coming from pin 28 but it is 11.7 volts, when I put a load on it like the fan solenoid I loose voltage, I d… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,237 satisfied customers
I have a 2003 Peterbilt 379, with a 12.7 liter detriot. my
I have a 2003 Peterbilt 379, with a 12.7 liter detriot. my engine fan stays on and the engine fan light stays on , and the toggle switch in the dash will not turn it off. … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I'm switching a 99 peterbilt from Detroit ddec3 to cat 3406e
I'm switching a 99 peterbilt from Detroit ddec3 to cat 3406e 40 pin. What do I need for the cab. I have the harness from the ecm to the firewall from a donor truck. … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
Mr. Cat Man, I have a 6NZ cat in a 379 peterbilt. None of my
Mr. Cat Man, I have a 6NZ cat in a 379 peterbilt. None of my check engine lights and stop engine lights illuminate when the engine runs hot or when I unplug any sensor,, however they do throw faults o… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,237 satisfied customers
Mr. Cat Man, Im having trouble communicating to a c15 ESN:
Mr. Cat Man, Im having trouble communicating to a c15 ESN: SDP20943. My wireless adapter powers up when I plug it in the data port but never sees the ecm when I try to connect. Can you tell me which p… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,237 satisfied customers
Mr. Cat Man, I have a 5EK in a 96 peterbilt. When trying
Mr. Cat Man, I have a 5EK in a 96 peterbilt. When trying to hook et to it im not getting any power from my data port. Can you tell me what wires to check that could keep me from getting power from tha… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,237 satisfied customers
Mr. Cat Man, Can you tell me on a c12 BDL02213 which pins on
Mr. Cat Man, Can you tell me on a c12 BDL02213 which pins on the ecm go the atmospheric pressure sensor? I have a case where someone extended the wires on the harness so the plug would reach the senso… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,237 satisfied customers
Mr. Cat Man, I have a CAt c-13 with overheating problems.
Mr. Cat Man, I have a CAt c-13 with overheating problems. I've checked all the regular stuff and found no problems. (head gasket, head, fan clutch, radiator, aftercooler, water pump) Do you know of an… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,237 satisfied customers
Mr Cat Man, I have a c12 2KS. Truck seems like its loosing
Mr Cat Man, I have a c12 2KS. Truck seems like its loosing prime and having to psin over a little longer then i thought it should have to before it starts. Just replaced the cylinder head but customer… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,237 satisfied customers
Mr. Cat Man, I have a C13 LEE11968 running rough. I did an
Mr. Cat Man, I have a C13 LEE11968 running rough. I did an injector test with cat et and it showed one of the two solenoids on an injector bad. This is the first c13 of this kinda i've seen and can't … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,237 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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