|
04-28-2022, 10:39 AM
|
#1
|
Almost There
Join Date: Aug 2019
Location: Las cruces nm
Posts: 75
Year: 97
Coachwork: Carpenter
Chassis: International
Engine: T444e
Rated Cap: 25,500
|
using Servicemaxx for buzz test
I bought the usb link-2 and downloaded servicemaxx into my laptop. Everything works and it recognizes my vehicle with correct vin, year, and hp (97 t444e 3-box). I am in a no start condition and after a lot of work I believe it may be the idm. I cannot figure out how to do the buzz test. Can anyone walk me through this? If you need more detail on what I have already done let me know. Thanks
|
|
|
04-28-2022, 12:22 PM
|
#2
|
Bus Geek
Join Date: May 2014
Location: West Ohio
Posts: 3,673
Year: 1984
Coachwork: Bluebird
Chassis: International 1753
Engine: 6.9 International
Rated Cap: 65
|
Servicemaxx showed no codes?
Up at the top, it has a "tests" tab. Click on that, click on "KOEO Tests", then click on "standard test". I believe, after you do a standard test, you can then run the injector test that's in the same tab group below standard test.
|
|
|
04-28-2022, 01:05 PM
|
#3
|
Almost There
Join Date: Aug 2019
Location: Las cruces nm
Posts: 75
Year: 97
Coachwork: Carpenter
Chassis: International
Engine: T444e
Rated Cap: 25,500
|
Thanks for the quick reply. I did that. The code I got was 253 which shows to be ecm/idm injection sync test fail. When I ran the injector test I got a sequence of 2 beeps on the laptop that just kept repeating with no pauses or breaks. No buzzes from the injectors. If these beeps are what I'm looking for, what do they mean? Thanks again.
|
|
|
04-28-2022, 02:34 PM
|
#4
|
Bus Geek
Join Date: May 2014
Location: West Ohio
Posts: 3,673
Year: 1984
Coachwork: Bluebird
Chassis: International 1753
Engine: 6.9 International
Rated Cap: 65
|
Quote:
Originally Posted by Studedude
Thanks for the quick reply. I did that. The code I got was 253 which shows to be ecm/idm injection sync test fail. When I ran the injector test I got a sequence of 2 beeps on the laptop that just kept repeating with no pauses or breaks. No buzzes from the injectors. If these beeps are what I'm looking for, what do they mean? Thanks again.
|
Does it show 253 as active? With 253 in the system, the engine won't run and the idm won't run the injector buzz. That's why you didn't get buzzing from the injectors. No idea what the beeps are from your computer.
Follow the troubleshooting procedure for code 253.
|
|
|
04-28-2022, 03:27 PM
|
#5
|
Almost There
Join Date: Aug 2019
Location: Las cruces nm
Posts: 75
Year: 97
Coachwork: Carpenter
Chassis: International
Engine: T444e
Rated Cap: 25,500
|
Yes 253 is active. I have the diagnostic manual with the trouble shooting sequence.I will go as far as I am able with that. The manual mentions several tests that require a breakout box. Is that necessary or can I use a multimeter.
|
|
|
04-28-2022, 04:15 PM
|
#6
|
Bus Geek
Join Date: May 2014
Location: West Ohio
Posts: 3,673
Year: 1984
Coachwork: Bluebird
Chassis: International 1753
Engine: 6.9 International
Rated Cap: 65
|
A breakout box isn't necessary, multimeter and t pins are how I do it. Remove the connectors first and make sure contacts are clean, tight, and look good.
|
|
|
04-28-2022, 04:34 PM
|
#7
|
Almost There
Join Date: Aug 2019
Location: Las cruces nm
Posts: 75
Year: 97
Coachwork: Carpenter
Chassis: International
Engine: T444e
Rated Cap: 25,500
|
Thanks, I'll be on it tomorrow. I am learning as I go, having never done this before.
|
|
|
10-13-2023, 03:40 PM
|
#8
|
Almost There
Join Date: Aug 2019
Location: Las cruces nm
Posts: 75
Year: 97
Coachwork: Carpenter
Chassis: International
Engine: T444e
Rated Cap: 25,500
|
I realize that this thread is a little old but I am making progress after much study,A lot of testing and replacing various parts all of which cleared most of the codes. I am at the point now where to bus will start but only runs on 6 cyls (97 t444e 3 box). I used technical bulletin for 1994-2003 Ford 7.3l Powerstroke for testing before replacing IDM. Cyls 5 and 7 failed (no ohm reading or continuity). Also those cyls are not squirting oil with engine running. I checked continuity from the IDM connector to the under valve cover harness and do have continuity.
My question is, should I replace the injectors (or rebuild) or just the solenoid, or both? I see that rebuild kits don't come with solenoids. I am leaning towards rebuilding all 8 (212,000 on origs). Thanks in advance
|
|
|
10-13-2023, 03:56 PM
|
#9
|
Almost There
Join Date: Aug 2019
Location: Las cruces nm
Posts: 75
Year: 97
Coachwork: Carpenter
Chassis: International
Engine: T444e
Rated Cap: 25,500
|
IDM_Module_Replacement.pdf This is the bulletin I referred to.
|
|
|
10-13-2023, 09:30 PM
|
#10
|
Bus Crazy
Join Date: Jul 2021
Location: Southern Oregon
Posts: 1,607
Year: 1996
Coachwork: AmTran (Now Navistar)
Engine: DT444E (7.3L) International
Rated Cap: 31,800 pounds
|
5 & 7 are on the same side. Definetly need to check the harness on that side as you may have a bad harness which is not uncommon.
__________________
YouTube: HAMSkoolie WEB: HAMSkoolie.com
We've done so much, for so long, with so little, we now do the impossible, overnight, with nothing. US Marines -- 6531, 3521. . . .Ret ASE brakes & elect. Ret (auto and aviation mech). Extra Class HAM, NAUI/PADI OpenWater diver
|
|
|
10-14-2023, 07:27 AM
|
#11
|
Bus Geek
Join Date: May 2009
Location: Columbus Ohio
Posts: 18,751
Year: 1991
Coachwork: Carpenter
Chassis: International 3800
Engine: DTA360 / MT643
Rated Cap: 7 Row Handicap
|
Quote:
Originally Posted by HamSkoolie
5 & 7 are on the same side. Definetly need to check the harness on that side as you may have a bad harness which is not uncommon.
|
+1 on the harness and absolutely positively DONT by a dorman... I have heard of so many issues with the cheapie aftermarket dorman harnesses.. I bought an Alliant under valve cover harness kit for mine when i swapped my 8 injectors.. so far no issues in a couple years..
ive not tried rebuilding an injector.. when i had one maybe 2 injectors starting to get lazy i simply replaced the whole set.. just the way i do things.. a good diesel shop that specializes in ford powerstrokes can rebuild those units for most likely a lot cheaper than a new set, dependoing on whats bad.. having open circuits seems more like hasrness / connector issues... ast least worth pulling the vaslve cover and measureing ohms right on the injector connector itself.. be sure to ohm them both polarity in case they have a flyback diode in the solenoid.. ive not personally looked at a schematic to know if they do or not..
|
|
|
10-14-2023, 08:49 AM
|
#12
|
Almost There
Join Date: Aug 2019
Location: Las cruces nm
Posts: 75
Year: 97
Coachwork: Carpenter
Chassis: International
Engine: T444e
Rated Cap: 25,500
|
Thanks for the replies.
1st. The valve cover gaskets w/ molded in connectors are new (probably
Dorman, I don't remember for sure).
2nd. The test I previously mentioned was done at the IDM connector
with everything including the injectors plugged in. This test showed
an open on both 5 and 7.
3rd. I then unplugged the harness at the injectors under the valve cover
and checked continuity from the Idm connector to the underneath
harness and everything checked good. No opens.
So, it seems that I only have an open when the injectors are plugged in. Have I missed something?
I also checked all of the other injectors as described in the tech bulletin just to make sure I was doing it right and the other 6 tested good.
|
|
|
10-14-2023, 10:45 PM
|
#13
|
Bus Nut
Join Date: May 2023
Location: Canada
Posts: 269
Year: 2001
Coachwork: BlueBird
Chassis: International 3800
Engine: T444E, Allison 2000
Rated Cap: 72
|
If the injectors are showing open and harness is good then I say injectors. You could pin out injectors directly.
A name brand reman injector is fine. You could always google review the product you choose
Dorman gaskets have the wiring molded into the gasket. Eliminating the seperate uvc harness. All one now. I don't like anything Dorman and try to avoid. With that said I have a Dorman TPS on my truck. $50 is better than $600 that I was quoted for.
My buddy uses Dorman gaskets. Claims he has not had a problem yet. I can't bring myself to using them. 100+volts and 12 volts don't mix well together.
|
|
|
10-15-2023, 11:06 AM
|
#14
|
Bus Nut
Join Date: Sep 2015
Posts: 404
Year: 1992
Coachwork: Bluebird Mini-Bird 24'
Chassis: Chevy P30
Engine: Chevy 6.2L Diesel
|
I've got to reinforce my distaste for Dorman.
Sometimes, Dorman is all you can find making a certain part... but honestly, pretty much anything else that isn't chinesium is probably going to be better.
Sure, Dorman parts might "work" for that garage-queen resto car that never gets driven, but for anything that's going to see use and/or abuse you'd rather drop another $5 or whatever and get something that's actually made to be used. And let's be real here, the very nature of a Skoolie is inherently abusive on whatever it is that we're putting in, however rarely the Skoolie gets used.
|
|
|
10-15-2023, 09:20 PM
|
#15
|
Almost There
Join Date: Aug 2019
Location: Las cruces nm
Posts: 75
Year: 97
Coachwork: Carpenter
Chassis: International
Engine: T444e
Rated Cap: 25,500
|
Since more than one response has suggested that the doorman valve cover gasket harness might be the problem. What test can I do that? I have not already done to decide if that is the problem.
|
|
|
10-16-2023, 07:29 AM
|
#16
|
Bus Geek
Join Date: May 2009
Location: Columbus Ohio
Posts: 18,751
Year: 1991
Coachwork: Carpenter
Chassis: International 3800
Engine: DTA360 / MT643
Rated Cap: 7 Row Handicap
|
ultiomately you test the pins first at the harness connector, if you have fasctory service manual tests fail the meter test.. then you pull the valve cover and test the injector (or glowplug whichever you are fixing).. at its own connector.. if you get bad readings then you kniw the device is bad.. if you get good readings.. then you know the harness or connector is at fault.. esp if you can plug it back in and notice now you have a good reading at the harness connector when it was previously bad.. or if you can see fluctuations in resistance by flexcing the wires / jiggling the connectors.. or if readings vary greatly from device to harness connector.. resistance shouldnt vary much in a 6 inch long piece of wire.. of course oil in the connectors is a telltale sign the valve cover harness has failed as well..
|
|
|
|
Thread Tools |
|
Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Threads |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|