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Old 01-24-2025, 09:25 AM   #1
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Another VPM issue

So this forum seems to have the most resource for the dt444e VPM problems on the web.

I have a 1995 4700 rollback truck.

My warn engine light is on with the following flash codes
223
622
124
325
223
622

The light came on a few weeks after replacing my injectors. The truck starts and runs good but it is painfully slow. Especially up hill with a car on it. It does have some blow by it has 450k miles on it. But the worst part is I cant idle the motor up with the cruise control switch when Im using the PTO. Apparently it disables that feature when 622 code is on according to the service manual..

Ive replaced my icp sensor. I have 5 volt reference and ground.

I replaced both under hood ecm relays.

Now I had what I thought was a major break thru... I had an issue where the truck would not crank over. I replaced my crank relay under the passenger dash, my start relay under hood and I fixed a broken white ground wire in the harness under the motor on top of the front axle. I had the firewall connector off checking my voltages. After the truck was fixed the warn engine light stayed off for a day.

Two other issues I dont know if they could be related. Sometimes my gauge cluster stops working, sometimes it comes on and goes off while driving and the needles sweep back and forth like the whole cluster loses power and turns back on.

I have a NexIQ basic code reader and PID reader that wont connect since I started having these problems.

At this point is there any common places to look for a wire issue or do I need to buy the ford breakout box now? If my VPM is dead Im probably going to have to live with this problem. Maybe make a mechanical fix to idle it up with gas pedal. I just use the truck as a side hustle scrapping cars.

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Old 01-26-2025, 08:58 PM   #2
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So I removed my VPM and found a leaking capacitor on the circuit board. Going to attempt to solder a new one on. Truck runs without the VPM even plugged in.
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Old 01-27-2025, 07:38 AM   #3
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Chassis: International 3800
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Originally Posted by WTW994 View Post
So I removed my VPM and found a leaking capacitor on the circuit board. Going to attempt to solder a new one on. Truck runs without the VPM even plugged in.

the VPM isnt necessary for the truck to run but it runs at only default settings sotred in the ECM.. lowest Horsepower rating offered, least amount of features, etc..
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Old 02-01-2025, 02:31 PM   #4
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Originally Posted by WTW994 View Post
So I removed my VPM and found a leaking capacitor on the circuit board. Going to attempt to solder a new one on. Truck runs without the VPM even plugged in.
Would be interesting to find out if it's the capacitors that are killing these things.
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Old 02-02-2025, 12:07 PM   #5
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Would be interesting to find out if it's the capacitors that are killing these things.
One of them looks like it could have damaged the board. Hoping i can just clean it up. Im waiting on the right tools to get here then I will try to fix it and provide an update.
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Old 02-02-2025, 12:35 PM   #6
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One of them looks like it could have damaged the board. Hoping i can just clean it up. Im waiting on the right tools to get here then I will try to fix it and provide an update.
Wouldn’t surprise me , I’ve fixed a lot of things by replacing the caps .. no idea where in the line these are but if they are filter caps on the data link to the ECM they definitely would knock the VPM out of service on a short
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Old 02-02-2025, 02:49 PM   #7
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Wouldn’t surprise me , I’ve fixed a lot of things by replacing the caps .. no idea where in the line these are but if they are filter caps on the data link to the ECM they definitely would knock the VPM out of service on a short
Same....the very first one I remember fixing was a TV that my parents was going to throw out. I even ran a trace on the circuit board. I was in my teens and it took me a week to get that TV working(all on luck as I had no clue but visual clues) but I had a TV in my bedroom after.
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Old 02-02-2025, 07:38 PM   #8
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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
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Originally Posted by Omnibot2000 View Post
Same....the very first one I remember fixing was a TV that my parents was going to throw out. I even ran a trace on the circuit board. I was in my teens and it took me a week to get that TV working(all on luck as I had no clue but visual clues) but I had a TV in my bedroom after.

TVs and monitors are so often tossed out due to caps.. the heat dries out the caps and they either go open or they short and blow fuses.. result is the cnsumer tosses the device out..



recycling at its best is taking discarded items and repairingthem to work again!
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Old 02-06-2025, 10:52 AM   #9
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If you are gonna discard that VPM, send it to me, I'll attempt to repair it with soldering new traces on the board.

Let me know if you are interested in a Private Message.
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