Medium and Heavy Trucks

Have truck repair questions? Ask an Expert

Ask an Expert,
Get an Answer ASAP!

This answer was rated:

Is a real person there? 1998 fld120 freightliner semi truck…

HI is a real...

HI is a real person there?

Mechanic's Assistant: What is the complete model and serial number of your machine?

1998 fld120 freightliner semi truck 975074

Mechanic's Assistant: Are you fixing this yourself? What have you tried so far?

Ye sand no I am putting an engine form this truck in a tractor. I need a certain section of the wire diagram to figure out 4 wires

Mechanic's Assistant: Anything else you want the equipment mechanic to know before I connect you?

I am working on the section of the wiring that has to do with the engine fan switch. I need to know where all 4 wires go form that switch. I have never done this before ... how does it work and how long does it take? Cost?

Show More
Show Less
Ask Your Own Medium and Heavy Trucks Question
Answered in 13 hours by:
3/25/2018
Daniel Wilson
Category: Medium and Heavy Trucks
Satisfied Customers: 6,582
Experience: Owner at DJ Wilson
Verified

Hi ,My name is Dan. I will be glad to help. We can follow up as needed on here, Give me some time to review your information and post my responses. Im not an employee of the site but I help on here as time allows in between jobs. Response time will vary depending on my work load , etc. Customer service can help your with your billing questions before we begin as they handle all that. Also you need to post the engine make, model, and serial number.

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 1 month ago
Dan,
I have never done this before. I did not know that the answers took so much time to get. While I waited I read some info on the internet that lead me to the specific answer I needed. However I could still use some help. I am putting s series 60 Detroit 06r0427030 from a 1998 fld120 Freightliner semi tractor serial # 975074 into a Stiger farm tractor. I kept all the wiring from the truck and am installing that wiring into the tractor as it applies to the computer systems of the truck. I will end up with one wiring system from the farm tractor to run lights, ac, heater fan etc. The truck system will run computers, engin gages, control modual and display center. In the process I am illiminating some things like Cruse control, Jake brake and s number of switches that I don't need. There will be a number of those illiminations that might trip me up like clutch and brake switches perhaps needing to be jumpered or low air sensors etc. I have a book with the wiring diagrams for the farm tractor. I have a scematic from Detroit of their systems but I don't have a wiring diagram from Freightliner of the Detroit specific wiring in the cab ( with wire numbers) to help me double check my re-instalation and to help me solve mysteries like the fan clutch switch I originally wrote about.( I forgot that engin fans are on with an absence of power instead of a presence of power)�� also in the future I will need a diagram to solve breakdowns and other stuff that pops up. If you can get me a Freightliner (Detroit series60 specific) wiring diagram that would be great. Or perhaps a part number to order one or website to download one that doesn't require a perscription or some affordable way to get one. ( I do have an oversymplified diagram from the sleeper in the truck- covers basic important stuff but not all the wires) Thanks Chuck

Thanks for the update Chuck. I should be able to help with all of that. I need to know if the ECM is DDEC 2,3, or 4 ?

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 1 month ago
DC 4
Thank you
I will note that there is a diagram that Freightliner calls a basic diagram. It is not enough to show all the wiring.

Click on this link for the Vehicle OEM connector and the engine side.

Service info

Ask Your Own Medium and Heavy Trucks Question
Basically everything on the engine side is the same and the ECM OEM connector will be the same as well weather it is in a Freightliner or another chassis. Please remember to take a moment and rate my answers as that is how the site credits my time helping on the site. Five-star ratings and bonuses are greatly appreciated. Click on the service info link above for the diagrams. I have a highly detailed manual for DDEC IV that will cover installation and setup that I will send over an offer any premium service if interested. Once accepted let me know what email you would like the information sent to. If all you need is the diagram that I've already posted then just take a moment to rate my answers and we can still follow up as needed on here.
Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 1 month ago
I already have these diagrams from Detroit. I need Freightliner diagrams. I need to see wiring in the Freightliner cab that corresponds to 1998 fld 120 with a Detroit engin. The wiring is not the same in the Freightliner for each engin. For instance some of the Freightliner wire numbers that go to engine stuff have a D in front of them.

I have them and the full manual for FLD

Ask Your Own Medium and Heavy Trucks Question

Click this link

Service info

Daniel Wilson
Category: Medium and Heavy Trucks
Satisfied Customers: 6,582
Experience: Owner at DJ Wilson
Verified
Daniel Wilson and 87 other Medium and Heavy Trucks Specialists are ready to help you
Ask your own question now
Customer reply replied 1 month ago
THIS IS GREAT!!!!!!!!! EXCELENT I AM EXCITED I CAN DOUBLE CHECK ALL THEWIRING NOW AND BE SURE BEFORE I EVEN ADD POWER. THANK YOU DANIEL! I tried to get this from freightliner but they sent me the basic that I already had. Thanks you ... I have never done this before so I hope I can find out how to hive you a great rating
Customer reply replied 1 month ago
By the way Daniel I did find the rating star thing and gave you the max.
Also thanks for sticking with this difficult question.
Thanks again Chuck. This was a great experience.

Pleasure to help Chuck and thank you for your generosity. Let me know if you need more help in the future.

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 1 month ago
sure will...thanks

You are welcome.

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 1 month ago
I don't know if you will still be there but I have another question.......I was looking at the diagram carefully and noticed a few discrepancies' compared to mine. I looked a the date which was dec. 1996 mine is May 1998. It is still certainly still 95% usefull but happens to be missing some things I imagined they added later. One major difference is that he drawings I have do not have the DCM and display that indicates certain engine problems etc. that mine has ( unless I am somehow missing it on the drawings) Would you be able to get the later version closer to my year? Its still plenty helpful if you can't but would be even better if its available. I would be happy to pay more to too If I would be able to figure out how. Thanks Chuck

Hi Chuck, I believe that might be the closest and I did post an offer for the manual which cover mid 90's to early 2000 models if interested and I will throw in what else I come across in my archives. Just let me know what e mail to send to once accepted.

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 1 month ago
Thanks very *****@******.***
I will sure pay you if you get it. Thanks again.
Customer reply replied 1 month ago
It is very foggy here and our internet is satellite. My last message said it may not have gone through so I will try it once more. Thanks very *****@******.***
I will sure pay you if you get it. Thanks again.
There should be a link for an offer posted at 11:05 p.m. if you scroll back. Once accepted I can provide you the link
Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 1 month ago
Oh I get it I will try link. Thanks

I posted in the private contact window above.

Ask Your Own Medium and Heavy Trucks Question
I also sent to your email. Let me know once you have the files so I know when it's okay to shut down the links.
Ask Your Own Medium and Heavy Trucks Question
Was this answer helpful?
Ask Daniel Wilson Your Own Question
Daniel Wilson
Daniel Wilson
Daniel Wilson
Category: Medium and Heavy Trucks
Satisfied Customers: 6,582
6,582 Satisfied Customers
Experience: Owner at DJ Wilson

Daniel Wilson is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Daniel Wilson

Daniel Wilson

6,582 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

4,247 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

2,640 satisfied customers

worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling

Jeremy

Jeremy

Certified Truck/Bus Technician

2,019 satisfied customers

ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, EPA 608/609 HVAC Certified, Steering/Suspension and ABS/Brakes Technician

cumminsdr

cumminsdr

Mechanic

1,225 satisfied customers

All types of Cummins applications

Curtis B.

Curtis B.

Technician

813 satisfied customers

Technician turned service manager on multiple lines of trucks and engines, used in industry.

dieseldan55

dieseldan55

Contractor

74 satisfied customers

Road Service mechanic for Volvo Construction.

< Previous | Next >

Related Medium and Heavy Trucks Questions
I got diesel in oil in dt466 2005. I change fuel pump 4
yes i change fuel pump 4 injectors all six injectors sleves … read more
Andy3221
Andy3221
truck /coach technician
Vocational, Technical or Trade Scho
222 satisfied customers
SPN 4364 FMI 18. 2014 Cacadia EVO. Only thing I can do now
Only thing I can do now is wait and see if the problem gets worse. … read more
roy
roy
Associate Degree
3 satisfied customers
I have a 2000 freightliner argosy cruise not working. When
I have a 2000 freightliner argosy cruise not working . When Ii realese the truck maxi brakes it will idle up but won't lock in when I'm driving . But it also isn't supposed idle up with maxis realised… read more
Daniel Wilson
Daniel Wilson
6,582 satisfied customers
I have a 2012 peterbilt with a paccar engine it stalled and
I have a 2012 peterbilt with a paccar engine it stalled and was towed into me at our shop we found unit has no fuel pressure when we use primer pump it builds pressure and will start but not for long … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Vocational, Technical or Trade School
2,019 satisfied customers
I'm working on a 2013 worth with a cummins isx15 engine #
Good morning I'm working on a 2013 ken worth with a cummins isx15 engine # 79579645, Im looking for the valve and jake adjustment procedures for this engine. can you please include the feeler gauge si… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,640 satisfied customers
How many time does it to change oil cooler in ISX
How many time does it to change oil cooler in ISX 400ST,engine No 79154463 … read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,225 satisfied customers
When taking apart fuel body on a2cy to fix injector body to
When taking apart fuel body on a2cy to fix injector body to leak … read more
Daniel Wilson
Daniel Wilson
6,582 satisfied customers
I'm trying to find a fuse diagram for my Freightliner. 2006
I'm trying to find a fuse diagram for my Freightliner … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Vocational, Technical or Trade School
2,019 satisfied customers
I have a freightliner single axle with a detriot 14l 515 hp,
i have a freightliner single axle with a detriot 14l 515 hp, 1 to 1 transmission ratio 10 speed transmission and a 2.93 rear running at 1700 at 70 mph.what would the rpm if i changed the rear gear to … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Vocational, Technical or Trade School
2,019 satisfied customers
2014 hino 255 has code p204f "scr control unit failure" with
2014 hino 255 has code p204f "scr control unit failure" with amber engine light illuminated with no drivability issues. the second amber engine light with the words "check engine" underneath it is not… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Vocational, Technical or Trade School
2,019 satisfied customers
No start no Ecm communication can see trans and instrument
No start no Ecm communication can see trans and instrument cluster. Powers and grounds to ecm check ok. 2009 4300 Maxforce 7 … read more
Daniel Wilson
Daniel Wilson
6,582 satisfied customers
I have a 2012 peterbilt here at my shop it was towed in has
I have a 2012 peterbilt here at my shop it was towed in has metal in fuel filter and when we prime it with primer pump it will start but soon after it stalls prime it it starts up again once it looses… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Vocational, Technical or Trade School
2,019 satisfied customers
SPN 3226 (Aftertreatment 1 Outlet NOx), Voltage below normal
SPN 3226 (Aftertreatment 1 Outlet NOx), Voltage below normal or shorted low … read more
Daniel Wilson
Daniel Wilson
6,582 satisfied customers
I have a 2011 4400 international durastar that has severa
I have a 2011 4400 international durastar that has severa codes and it died going down the road will crank and idle for a few seconds then slowly looses rpm then stalls out … read more
Daniel Wilson
Daniel Wilson
6,582 satisfied customers
1993 Inrenational 4700 w/ DTA 360 engine, 5 speed trans, had
1993 Inrenational 4700 w/ DTA 360 engine, 5 speed trans, had 5:38:1 rear. Installed 4:10:1 rear so vehicle would run more that 55mph. Now I need to calibrate the speedometer with the dip switches in b… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Vocational, Technical or Trade School
2,019 satisfied customers
I am getting this one on my freightiner cascadia 2012
I am getting this one on my freightiner cascadia 2012SPN-2567 0 Total Message Size (TP.CM_BAM) Apr 24, 4:33 PM Apr 24, 4:33 PM Intermittent SPN-521711 3 Apr 23, 3:40 PM Apr 23, 3:40 PM Intermittent SP… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Vocational, Technical or Trade School
2,019 satisfied customers
How are. Western star 2010. I have turbocharge problem i
Yes i have turbocharge problem i cant find the part… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Vocational, Technical or Trade School
2,019 satisfied customers
I'm working on a 855 Cummins cpl 15o4 engine #30354821.
I'm working on a 855 Cummins cpl 15o4 engine #30354821. Looking for the valve and injector adjustment procedure.… read more
Daniel Wilson
Daniel Wilson
6,582 satisfied customers
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.

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.

Show MoreShow Less

Ask Your Question

x