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Old 05-15-2024, 12:30 PM   #1
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Join Date: Jan 2023
Location: Eastern TN
Posts: 6
Year: '99
Chassis: Thomas Built
Engine: International 3800 T444E
T444e ECM hunt

Hi all,

I am curious if anyone has any good leads on an ECM for a '99 T444e
I believe I managed to fry a portion of my ECM, the local community college diesel repair program has more or less confirmed that fear. (after months of working on the bus)



I called my local IH dealer/certified parts dealer/mechanic, which the good news is they can program an ECM, but the bad news is a new ECM is going to cost more than what I originally paid for the bus. (5k)

I've seen a few listings on ebay motors, but feeling a bit hesitant of taking the leap on one of those before checking to see if anyone had any access to a used one. Or had a lead on a trust worthy source.

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Old 05-15-2024, 01:36 PM   #2
Bus Nut
 
Join Date: Oct 2018
Location: Central Alabama
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Year: 1998
Coachwork: Blue Bird
Chassis: TC/2000
Engine: 5.9 Cummins 12-valve
Rated Cap: 1
What happened to make you think it needs replacing? The codes you posted last year doesn't seem to indicate fried ecm. Are the codes the same now?

There was a seller on ebay that has one with 30 day return at 315. Seems worth trying if needed.
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Old 05-15-2024, 04:47 PM   #3
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Join Date: May 2009
Location: Columbus Ohio
Posts: 19,035
Year: 1991
Coachwork: Carpenter
Chassis: International 3800
Engine: DTA360 / MT643
Rated Cap: 7 Row Handicap
these ECM's are very common.. look for one with a 2004 date code on it.. it can be programmed for your VIN and has later firmware that greatly improves the cold weather mamners of the T444E.. im running a 2004 ECM in mine... I have seen short circuits in the wrong place fry the IDM portion of these single box ECM's... the test for it is no high voltage DC anywhere...
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Old 05-15-2024, 06:45 PM   #4
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Join Date: Jan 2023
Location: Eastern TN
Posts: 6
Year: '99
Chassis: Thomas Built
Engine: International 3800 T444E
Quote:
Originally Posted by BamaBus View Post
What happened to make you think it needs replacing? The codes you posted last year doesn't seem to indicate fried ecm. Are the codes the same now?

Loud pop when grounding with a multi-meter while trying to diagnose the source of the original codes. Also checked every fuse, relay, and even had the starter professionally tested. All passed. That, in addition to the professor of my local community college diesel mechanic program (who have had the bus and my schematic for 4+ months now) claiming it was looking like the ECM.

Quote:
Originally Posted by cadillackid
these ECM's are very common.. look for one with a 2004 date code on it.. it can be programmed for your VIN and has later firmware that greatly improves the cold weather mamners of the T444E.. im running a 2004 ECM in mine... I have seen short circuits in the wrong place fry the IDM portion of these single box ECM's... the test for it is no high voltage DC anywhere...
Yeah the loud pop I originally heard, and the three sensors I had posted codes about not having any 5v reference (according to the professor once again) makes me think I fried a portion of it.



After posting, and doing more digging, I was able to find Rydemore (https://www.rydemore.com/) via a posting they had on ebay. They had an actual brick and mortar location and phone number. So, I was able to place the order over the phone


So, I've got a "guaranteed programmable" used one on the way from them for 300 flat (that includes shipping). So, if it works out I'll be sure to update this thread.
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Old 05-17-2024, 07:55 AM   #5
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Join Date: Jun 2023
Location: South Carolina
Posts: 1,019
Year: 1995
Coachwork: Thomas
Chassis: International 3800
Engine: T444E
Rated Cap: 29
Let us know how it goes. I just recently went through a 3box hell with a T444E. My VPM was fried. Got it replaced after International replaced it with the 4th one.
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Old 05-17-2024, 08:26 AM   #6
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Join Date: May 2009
Location: Columbus Ohio
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Year: 1991
Coachwork: Carpenter
Chassis: International 3800
Engine: DTA360 / MT643
Rated Cap: 7 Row Handicap
Quote:
Originally Posted by nikitis View Post
Let us know how it goes. I just recently went through a 3box hell with a T444E. My VPM was fried. Got it replaced after International replaced it with the 4th one.



his 99 is a single box.. these ECM's are all over the place.. theres a bunch of different part numbers that will work..
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Old 05-23-2024, 07:18 AM   #7
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Join Date: Aug 2020
Location: East TN
Posts: 313
Year: 1999
Chassis: International
Engine: T444E
Try AAABus out of Phoenix.
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