Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
I have a 2005 peterbilt that originally had an isx. But
I have a 2005 peterbilt that originally had an isx. But previous owner converted it to a 6nz. It has had a die/no start issues for a few weeks but mother that he left the driver stranded. There is no … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have a c15 cat. Replaced the batteries but now all it does
I have a c15 cat. Replaced the batteries but now all it does is crank and won't fire. I have key on power to pin 70 but nothing on pins 52 and 53? … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 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
5,234 satisfied customers
2007 pete 379 c15 Acert cat mxs99184 serial number. 2007
2007 pete 379 c15 Acert cat mxs99184 serial number. … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
Peterbilt 379. I flopped my 05 Pete 379 with 63 flat top and
Second opinion] Peterbilt 379. I flopped my 05 Pete 379 with 63 flat top bunk and skidded down the highway on passenger side. They wrote it off, of coarse because it's age. I want to rebuilt it but ha… read more
timdieseltech
timdieseltech
lead diesel tech, shop owner
Vocational, Technical or Trade School
202 satisfied customers
My 2005 Pete with a C15 won't start. I get no clicking in my
My 2005 Pete with a C15 won't start. I get no clicking in my valve covers for the fuel rail system. Ecm checks out good. I have fuel pressure after cranking in the return behind filter. … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
I have a C15 6NZ no start. Getting fuel with pressure.
I have a C15 6NZ no start. Getting fuel with pressure. Checked with Cat ET and no codes. R&RAY primary and secondary engine speed timing sensors. Both were sized to wiring harness. Saved secondary wir… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
I have a 2007 Peterbilt, had a MXS Accert changed out cat
I have a 2007 Peterbilt, had a MXS Accert changed out for 6nz cat .how can I use my 2007 engine oil temp gauge MXS had no sending unit for this.… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
Yesterday my speedometer, odometer, voltage gauge and
Yesterday my speedometer, odometer, voltage gauge and instrument light cluster stopped working. Checked fuses and relays in fuse box as well as relay directly behind gauges. Could not resolve the prob… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I just swapped out my cat c13 acert engine in my 05 pete
Hey Tim, I just swapped out my cat c13 acert engine in my 05 pete 379, and replaced it with a c15 6nz engine, both were 70 pin on the harness. it will crank, but only fire on ether. of course it dies … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
When drivers door is opened and closed it will shut off. Do
When drivers door is opened and closed it will shut off . Do you have any ideas of what the problem would be. It is a 387 Peterbilt 2005 has a c15 Cat motor.… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
Have a c15 2007 same deal fuel delivery is good will crank
Have a c15 2007 same deal fuel delivery is good will crank over just will not fire up owner drove truck to location shut it off did his farming and truck will not crank up now… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
Catman, I asked you a question a few weeks ago regarding
Hey there catman, I asked you a question a few weeks ago regarding a “crank but no start” problem on a cat C15. It seems to be happening again. The truck in question is a 2007 peterbilt 379 (674827) c… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
Hi I have a 2007 peterbilt 379 with a c15 accert in it nxs.
Hi I have a 2007 peterbilt 379 with a c15 accert in it nxs. Will a 2000 6nz fit in it with out major modifications?… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
I want to put a 6nz engine in a 1981 Peterbilt that has an
I want to put a 6nz engine in a 1981 Peterbilt that has an A model cat engine in it Would you happen to know how much difference there is in the mounting brackets… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
2000 379 pete c15 cat need wiring diagram for ecm got power
2000 379 pete c15 cat need wiring diagram for ecm got power & grownd from battery but no power from switch please help… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
Hi Cat Man, Iam working on a C-15 CAT Accert Engine.Serial
Hi Cat Man, I'am working on a C-15 CAT Accert Engine.Serial # XXXXX engine was starting to run rough then it eventually just quit running.My customer said there was a code displayed on his dash comput… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
I need to rebuild a c15 cat eingine, Is it possible to make
I need to rebuild a c15 cat eingine, Is it possible to make it a c16, I've heard its the same block with bigger pistons and thiner liners. Is this true? The engine is in a 2002 peterbilt, serial #star… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 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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