What is this?

[T-Bolt]

This is mounted to the side of my DT530. What is it?

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[johnbloem1974]

It's your engine computer, or ECU

John

[cadillackid]

John has it right.. thats the engine comoputer.. (ECU, ECM)..

the DT-530 is a HEUI engine just like the DT-466E, T-444E, CAT-3126, VT-365 engines were.. HEUI engines were also made for ford by navistar for the Powerstroke 7.3 and 6.0, while your DT-530 is totally diffewrent mechanically than the likes of everything but the DT-466E, electronically you can follow many of the same troubleshooting procedures as you do for the ford power-stroke 7.3 and 6.0.

its ULTRA-IMPORTANT if you remove that computer for any reason.. that when you put it back, the electrical connector bolts are Torqued EXACTLY like the spec on the unit says.. too much torque and you can flatten the pins or deform the plastic connector, too little torque can cause bad connections, gremlins, ARCing (which can ruin the computer)..

your DT-530 is likely connected to an electronic transmission such as an MD-3060 pushbutton shifter transmission. there will be a separate computer that handles the tranbsmission. called a 'TCM'.

-Christopher

[Rusty]

Originally Posted by T-Bolt

This is mounted to the side of my DT530. What is it?

I think of those as huge piles of cash and leave them alone. I usually genuflect when I come across voodoo boxes full of electrons and that's what keeps the factory smoke inside the box.

Thanks for torque tip Caddi- I will be more aware of their torque pickiness.

[T-Bolt]

Thanks for all the replies. I thought it was the computer but was thrown by the "110 VDC"

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[cadillackid]

the injector drive module circuits use 110-120 Volts DC.. I believe there is IDM sense wires that go back to the ECM so if the voltage is low it can toss a code. nervertheless if you have thje connectors off you could possibly come into contact with the 110 VDC at some point.. DC voltage is quite dangerous..
-Christopher

[cadillackid]

on another note.. if you ever do need ot remove that computer to service something under it, be sure all power sources to the bus are disconnected.. namely the 12 volt batteries..

-Christopher