Medium and Heavy Trucks

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I have a Detroit series 60 DD4 in a Peterbilt 389. It was
Hello my name is***** have a Detroit series 60 DD4 in a Peterbilt 389. It was running fine than I shut it off for a few hours. I tried starting it and it was knocking and rocking. Plus blowing a lot o… read more
Bradey V
Bradey V
Certificate
Just bought a Pete with a 12.7 detroit. Was not running. Got
Just bought a Pete with a 12.7 detroit. Was not running. Got it running after some fuel issue repairs and it is only running on 1,2,3. . we are checking harness. Is there a way to confirm injector sig… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,886 satisfied customers
I HAVE A CUMMINS ISX CODE 325. 2011 PETERBILT 388 ENG#
Replaced injector #6, internal injector harness, external injector harness and ecm … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
431 satisfied customers
Just took 60series out of Pete with thick ecm and installed
Just took 60series out of Pete with thick ecm and installed in another pete that was using DDEC 3. I also have a DDEC 4 ecm that was still good 3 years ago. Do I need to replace the batteries in the e… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
Have a question about a series 60 Detroit in a 1991
Have a question about a series 60 Detroit in a 1991 Peterbilt … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
431 satisfied customers
Injector harness went out so we installed a new one and now
injector harness went out so we installed a new one and now it wont start tries to at first cycle of the key but then wont hit anymore … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
431 satisfied customers
I am working on a 12.7 series 60 Detroit. Cylinders 1,2,and
I am working on a 12.7 series 60 Detroit. Cylinders 1,2,and 3 aren't firing. We just replaced o-rings on all injectors and a new fuel pump. Truck ran about 50 miles or so then started missing. Hooked … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,886 satisfied customers
Have a 2003 flt century class truck has a rto 16910b-as2
have a 2003 flt century class truck has a rto 16910b-as2 trans, going to convert to a rtx16710b trans. have remove old trans, and computer on trans . with wiring . left the harness end going to cab fi… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
431 satisfied customers
I would like a heavy duty truck mechanic to look at pictures
I would like a heavy duty truck mechanic to look at pictures of a truck I'm thinking of buying and let me know if they visually see any issues. … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I have a 2001 Detroit 12.7 that I need to crank it up it's
I have a 2001 Detroit 12.7 that I need to crank it up it's possible do that the engine is in the floor … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,886 satisfied customers
I have a 1990 Peterbilt with a Series 60 Detroit. All of a
I have a 1990 Peterbilt with a Series 60 Detroit. All of a sudden it won't start. It cranks good but won't fire. Any ideas? … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I have a 2007 Freightliner with a 14L Detroit. VIN is
Hello, I have a 2007 Freightliner with a 14L Detroit. VIN is 1FUJA6CK47LZ14819. The truck died on the hwy and was towed back home. I initially couldn't connet DDEC to the truck so I checked all 5 volt… read more
Roy Belding
Roy Belding
7,583 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
11,886 satisfied customers
I am working on a series 60 detroit that cylinders 1, 2, &3
I am working on a series 60 detroit that cylinders 1, 2, &3 aren't firing. All six injectors have been replaced. I hooked up the prolink iq and got flash code 61 for injectors 1, 2 &3. visually inspec… read more
Clayton
Clayton
Technician
Vocational, Technical or Trade Scho
627 satisfied customers
I have a 2007 ISL 330 Cummins in a 357 Peterbilt concrete mixer
I have a 2007 ISL 330 Cummins in a 357 Peterbilt concrete mixer truck and the engine is only running on thre cylinders 4,5 & 6. Have replaced, injectors, wiring harness inside the valve covers. Cant s… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
2001 IH 8.7 liter will not start hot or cold without either
2001 IH 8.7 liter will not start hot or cold without either , has new injectors but can not hear them click when turning key on… read more
The Truck Doctor
The Truck Doctor
18 satisfied customers
I swapped a DDEC 4 out of a peterbilt and put in a DDEC 2 jakes
I swapped a DDEC 4 out of a peterbilt and put in a DDEC 2 jakes on the DDec 2 are different they need to run through a Jake module or something Can you get me a diagram or walk me through what i need … read more
JCTech
JCTech
Technical Specialist
Vocational, Technical or Trade Scho
352 satisfied customers
2000 sterling AT9513 with series 60 Detroit. Several weeks
2000 sterling AT9513 with series 60 Detroit. Several weeks back after sitting unit would not start. Thought it lost prime but had fuel when cranking coming out of return line on back of head. Had a mo… read more
diesel-tech
diesel-tech
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136 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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