Medium and Heavy Trucks

Have truck repair questions? Ask an Expert

Ask an Expert,
Get an Answer ASAP!

This answer was rated:

I have a 2005 4300 DT466 running rough, black smoke, no

power & hardly accelerates sputters...
I have a 2005 4300 DT466 running rough, black smoke, no power & hardly accelerates sputters & dies out. At idle, voltage check on injectors I'm reading a fluctuating 40v to as high as 120v. the middle X-1 connector on the IDM was soaked with engine oil. Isn't the IDM only supposed to supply 48v to the injectors? If so, how could it go as high as 120v?
Show More
Show Less
Ask Your Own Medium and Heavy Trucks Question
Answered in 9 minutes by:
11/18/2017
Daniel Wilson
Category: Medium and Heavy Trucks
Satisfied Customers: 6,719
Experience: Owner at DJ Wilson
Verified

Hi, My name is***** will be glad to help. What do you have logged for fault codes?

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 6 months ago
123456 injectors FMI 5, 221 FMI 4 & 254 FMI 6
Customer reply replied 6 months ago
I'm not in the shop now till Monday, so no phone call right now. thanks

Sid 221- fmi 4- flash code 534. Idm voltage low
Sid 254- fmi 6- flash code 525 injector driver circuit fault *m*

Ask Your Own Medium and Heavy Trucks Question

Check the 5 a fuse in the fuse box and at the idm connector (white one) pins 1,2,3,22,26 for ground. Pins 4,23,24,25 for main power. Pins 8 which has a 10 amp fuse in the box, also pin 7 which has 5 amp fuse in the box and pin 27 check as well. There is a idm relay in the fuse box that could be bad or have a bad connection . Commonly when the 525 code is thrown with 534 for idm you almost always have a low/no voltage going to the idm. Pins 8,4,23,24,25 are all power from the idm relay. You also have a fuse holder in the battery box that is 40amp that is a common issue for melting or shorting. check for that.

Ask Your Own Medium and Heavy Trucks Question

Please take a moment to rate as that is how the site credits my time helping on the site or let me know if you need more help. 5 star and bonuses are always greatly appreciated.

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 6 months ago
the first thing i checked was all the fuses, relays & power cables and there all ok, back to my question how can the idm send voltage as high as 120 volts? when the engine is running at idle the voltage rapidly goes up and down from low voltage up to 120 volts. i checked resistance on all injectors and there all about 0.7 ohms

Hi, sorry for any confusion, So you tested the supply voltage with a volt meter to the IDM and the voltage is consistant with battery and charging system supply voltage and the IDM relay and other checks for supply power and the grounds all test good. If that is true and you are seeing fluctuating voltage as you describe, your IDM is shorted internally and has internal problems needing replacement...So to simplify.... If you have those faults and supply voltage is good and from the IDM relay but out put voltage for the injectors is as you described, Replace the failed IDM.

Daniel Wilson
Category: Medium and Heavy Trucks
Satisfied Customers: 6,719
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 6 months ago
Dan, I checked again at the idm connector and now I got no power there. I jumped out the power relay & still no power at the X-3 connector, all ground pin numbers & fuses are good. Where is the 12 pin connector that is shown on the wiring diagram located?
Customer reply replied 6 months ago
could you please answer my last question

Can you upload the diagram you are referring to? Im not an employee of the site so there may be times om on the road on a call or in the shop and even with my family time to time.

Ask Your Own Medium and Heavy Trucks Question

One 12 pin is connected to the IDM and another goes though the cab as a bulkhead connector if these are what you are referring to.

Ask Your Own Medium and Heavy Trucks Question

Let me know if you need more help

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 6 months ago
the diagram I,m using is International control system diagnostics, beginning of 2004 model year dt466, dt570 & ht570
Customer reply replied 6 months ago
Dan I had the relay jumped wrong, I jumped it correctly and got good power on all the pins you told me to check at the IDM connector, plugged everything back in except the IDM relay (left it jumped) started up and still same problem running rough, black smoke & high voltage at the injectors, over 100 volts, have you ever heard of replacing the IDM bottom board for this problem?

It is called a half shell... The ECM and IDM can be replaced separately. If you have bad injector drivers you can get a half shell

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 6 months ago
could bad drivers cause too high of voltage to the injectors and that causing over fueling making black smoke?

If the input voltage is only 12 volts and the IDM is doubling output voltage or erratic then it could damage the injectors and also cause overfueling.... Check the turbo is okay and no boost leaks causing low turbo boost as well.

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 6 months ago
the voltage is very erratic & the turbo was one of the initial things I checked and all is OK there, the last time I checked the resistance on all the injectors they were all the same as the new one I have, so I hope there still good.

Understood. That at least sounds promising that the resistance is in line with the new one and others.

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: 6,719
6,719 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

6,719 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
Have a 2016 KW with isx15 with fault code spn3251 fmi2. Want
Have a 2016 KW with isx15 with fault code spn3251 fmi2. Want to know how to clear codes without a scan tool … read more
Andy3221
Andy3221
truck /coach technician
Vocational, Technical or Trade Scho
222 satisfied customers
Looking for engine wiring diagram for 09 international 4400.
Looking for engine wiring diagram for 09 international 4400 … read more
Daniel Wilson
Daniel Wilson
6,719 satisfied customers
2004 international 4300, antifreeze vanishing throughout the
2004 international 4300, antifreeze vanishing throughout the day. Can put a couple gallons in the morning in, at the end of 10 hours, all gone. No antifreeze in the oil from what I can tell. Just had … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,640 satisfied customers
Low boost pressure. 2007 Kenworth W900L C15 ACCERT CAT. Our
Our mechanics are going through all charged air lines exhaust system common issues finding nothing yet there is low boost … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,247 satisfied customers
Hy. 2003 freighliner Columbia. Ac compressor keep running
hy JA: What is the complete model and serial number of your machine? Customer: 2003 freighliner Columbia JA: Are you fixing this yourself? What have you tried so far? Customer: yes JA: Anything else y… read more
Andy3221
Andy3221
truck /coach technician
Vocational, Technical or Trade Scho
222 satisfied customers
03 Freightliner Century Classic What's the avg. labor time
03 Freightliner Century Classic What's the avg. labor time on king pins and bushings replacement? No ream… read more
Daniel Wilson
Daniel Wilson
6,719 satisfied customers
The brakes are always dragging on my 5103. It's getting
The brakes are always dragging on my 5103. It's getting worse. … read more
Curtis B.
Curtis B.
Technician
Associate Degree
813 satisfied customers
My Case TR 270 skidsteer won't start. I just bought this
My Case TR 270 skidsteer won't start. I just bought this 2011 … read more
Daniel Wilson
Daniel Wilson
6,719 satisfied customers
2019 579 Peterbilt. I've done the 10 min parked regen, the
2019 579 Peterbilt. I've done the 10 min parked regen, the guages now show clean. But warning still up. I had to stop the process manually, does it shut off itself after 10 mins?… read more
Andy3221
Andy3221
truck /coach technician
Vocational, Technical or Trade Scho
222 satisfied customers
Looking for torque specs for flexplate to crank and torque
Looking for torque specs for flexplate to crank and torque specs for the convertor bolts … read more
roy
roy
Associate Degree
3 satisfied customers
My 2fgc20 Toyota forklift starts fine. I was using it turned
My 2fgc20 Toyota forklift starts fine. I was using it turned it off, got a drink and started it up but it wouldn't move forward or reverse … read more
Curtis B.
Curtis B.
Technician
Associate Degree
813 satisfied customers
Does an International series 8100 come equipped with an abs
Does an International series 8100 come equipped with an abs light on the dashboard? … read more
timdieseltech
timdieseltech
diesel tech
Vocational, Technical or Trade School
58 satisfied customers
Have a JD 4020 diesel tractor. Trying to find out the block
Have a JD 4020 diesel tractor. Trying to find out the block number. Only numbers I found on right side, behind the generator is engine serial # 23F200988. … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,640 satisfied customers
2012 cascsdia, def tank light flashing and tank is full,
2012 cascsdia, def tank light flashing and tank is full, have codes of spn003364 def quality 17. Spn003364 def quality 01, Spn00435 def air pressure … read more
roy
roy
Associate Degree
3 satisfied customers
I have a Peterbilt with Cummins isx. I keep having problems
I have a Peterbilt with Cummins isx. I keep having problems with #7 injector also known as DPF fuel injector. It's been replaced 2x in a year. Last time was in the last week. I pick truck up, cranked … read more
roy
roy
Associate Degree
3 satisfied customers
Cummins ISX FMI 16 I got a new dpf filter installed a month
Cummins ISX FMI 16 I got a new dpf filter installed a month ago. Had more problems and found out a injector was failing so replaced that and cleaned the dpf again. That was a week and a half ago … read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,225 satisfied customers
I have a Series 60 # 06R0672408. I need to do a valve
Hi. I have a Series 60 # 06R0672408. I need to do a valve injector and engine brake tune up. All the info is gone from the valve cover. Could you please tell me what the specs are? Intake, exhaust, in… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,640 satisfied customers
Why does my Altec digger dy when I turn on the machine
Why does my Altec digger dy when I turn on the machine switch on the dash … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,640 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