I did this earlier today today thanks to Cookie88 for the resistors. Much smoother idle with easier start. Turbo seems to spool faster and definitely whistles a lot louder at an idle. And me and the guy who works with me both noticed a difference in acceleration. I had a 100v IDM so if ya'll already have the 110v's your changes might not be as drastic as mine.

Heres the pics along the install, sorry for the quality, pics were taken from my blackberry:


This is the stock IDM just opened up.


The resistor saying 6042 is the one to be removed, I stuck my pocket knife under it while hitting each side with the soldering iron.


Here is a pic with the stock resistor removed


This is the new resistor installed. I did not have to add solder, used what was currently there. May not be the same for everyone.


Here is the IDM sealed up and ready to put in truck

Additional notes: UNPLUG GROUNDS BEFORE TOUCHING IDM CONNECTION. To open IDM lid, I used a painters 5in1 for prying and a slotted screwdriver to hold it open. The inside board is covered in a silicone spray, Lowes sells a brush on electrical coating for waterproofing and arc eliminating. I recomend using this. Seal it back up with RTV silicone and youre good to go.

 

I have got to do this mod.
Keep hearing good results form everyone who has done it. Just a little leery because I had an IDM go bad a couple years ago and the dealer put one in. About $800 IIRC. Had to booger it up.
But now I m wondering if they put a one in that is stock for my '97 or if the new one is a higher voltage.
Anyone know how to tell the voltage just by looking at the box?

 

Voltage is listed on theIDM. I had the stock 100V on my 97, my bio-diesel partner gave me a 120V that he had in the shop, I can tell a difference just changing them out.

 

If you look at the pics above were the harness plugs in it says on the white ford decal. It should say something like IDM-100. The # following IDM is the voltage.

 

I see it. Got a 110. so kicking it up to 140v will make enough of a difference to make it worthwhile?

Anyone ever go crazy and jump to 150 or 160v?

 

I just started looking into doing the same mod, but I can't find the right resistor. The article in the DieselPower mag I have says that with the IDM110 you need to use a 75k ohm 1/2W 1% tolerance metal film resistor, which I can't find at Radio Shack or on ebay. If this is the correct resistor, can anyone help me find one? Thanks

 

check out here for the resistor

Digi-Key - PPC75.0KXCT-ND (Vishay/BC Components - SFR16S0007502FR500)

 

sbxworship I have one left. PM me your address and I will send it to you.

 

You are very welcome.

I've got 8 of the 73.2K (for converting IDM120) left and I think 16 of the 75K. Giving them away for the asking. All I need is a PM with a name and mailing address.

 

cookie, pm and reps sent

 

PM sent. I couldnt sent rep to you.

 

140 will make a surprising difference in throttle response and overall power.
The stock injector solenoids are only rated for 160v, so keeping it a decent amount below that keeps them healthy.

 

Scott, PM sent along with reps. Thanks in advance.

 

Cookie, sent you a PM and repped ya. Thanks for the help.

 

If you do screw it up most junkyards or carparts.com have an IDM. The junkyard here in Ocala sells them for 150.00