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Related Medium and Heavy Trucks Questions
No power to the ECM. From the ECM where do 52,53 and 70
No power to the ECM. From the ECM where do 52,53 and 70 wires go to? … read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
47 satisfied customers
C15 reads no eng, wont fire,gives code 140. power at pins 70
c15 reads no eng, wont fire,gives code 140. power at pins 70 52 53 and i thunk 55, but also has power at pins 63 65 67 and 69 … read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
47 satisfied customers
Cat Man, I have a CAT 6NZ23832 that wont start its in a 2001
Hi Cat Man, I have a CAT 6NZ23832 that wont start its in a 2001 Peterbilt. when I plug in my scan tool there is no communication with the ECM. I have unplugged the truck side connector of the ECM and … read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
47 satisfied customers
I have 2003 kenworth t300 with cat 3126 will not start was
Good morning I have 2003 kenworth t300 with cat 3126 will not start was running just died no voltage at heui pump tach inop no codes … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
2006 International 9400i, CAT C15 Acert. Turned truck off
2006 International 9400i, CAT C15 Acert. Turned truck off last night with no issues, cranks over but no start this morning. When cranking no tach signal, no oil pressure signal, no water temp signal. … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
2004 Peterbilt CAT C15 Engine serial NO. MBN16913 crank no
2004 Peterbilt CAT C15 Engine serial NO. MBN16913 crank no start, no tach movement, 60psi fuel pressure while cranking, i have key activated power at pin 70,52,53 of the p1 ECM connector and ground at… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Mbn cat in a Kenworth just shut down I'm going down the road
mbn cat in a Kenworth just shut down I'm going down the road and it just shut down the speedometer and the tach quit working the engine light does not come on all the rest of the lights come on with t… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I have a 2003 peterbilt 379 truck that wont start. the
hi, I have a 2003 peterbilt 379 truck that wont start. the engine turns over fine. I can plug in my scan tool and read the fault codes ( none found), I tested the ignition switch(ok), when you turn th… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
C15 acert in 9900 int crank no start, Changed batteries,
Volt oilpr watertemp rpm and speedom not doing right after ign on… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I have one peterbilt 2004 model 379 does not start a
hi i have one peterbilt 2004 model 379 does not start a mechanic came to see him but says probably computer… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I have a 1997 Louisville Dump with a 3126. I am installing a
I have a 1997 Louisville Dump with a 3126. I am installing a motor from a 99 Sterling 3126. I have the 40 to 70 pin adapter but get no power to my ecm Plug. I have checked power coming direct from Bat… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 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
10,344 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
10,344 satisfied customers
Im working on a 2001 cat 3126. Died while driving cranks but
Im working on a 2001 cat 3126. Died while driving cranks but no start. No communication on pro link. engine serial #ckm19576… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
2001,379 peterbilt going down road and the truck cut off lost
2001,379 peterbilt going down road and the truck cut off lost power to gauges ,have fuel,truck will spin over, fuse to ecm in battery box is good ,could it be ignition, relay?… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
i have a 2000 freightliner with c-12 engine. The problem I
i have a 2000 freightliner with c-12 engine. The problem I am having is that it will crank over but not start. when this happens the check engine light does not come on. It is sporatic but getting mor… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I have a 2009 peterbilt model 378, with a c-13 LEE18461, I
I have a 2009 peterbilt model 378, with a c-13 LEE18461, I have power on pins 52, 53, and 70, and ground on 65 and 67. I ordered a new ECM, installed the reman, and I continue to get a j1939 code on t… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
GM C6500: Changed starter 1998 GMC C6500 7.2 Cat Key switch
Changed starter 1998 GMC C6500 7.2 Cat Key switch want turn starter on. Connections checked and are right. Starter turns over fine. Not getting power to starter relay. Checked fuses, breakers, relays.… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 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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