1994.5 - 1997 7.3L Power Stroke Diesel  

140v Idm... `

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Old 11-21-2008, 10:16 AM
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140v Idm... `

Ah what a resistor here and there can do.
I did this mod last night, and it was really rather easy.
three 8mm bolts hold the module to the panel, and one 10 mm bolt holds the connector into the module. takes ten min to pull.
take it in the shop, cut away extra factory silicone, pops open with a flat screwdriver. there are three small screws on the end away from the connector, and six long ones- going through components- on the end by the connector... make sure you get them all.
then pop it out... easy as pie. For the next part, it helps that i have an electrical engineer where i work. he put a low heat soldering iron on each side of the resistor, and i popped it off. using a regular soldering iron, i put the new one on. ( yes i know, supposed to use low heat, but i just re-soldered fast, to no ill effect) and twenty min. after i took it off, it was getting silicone and going back on.
the truck started faster, but i didnt notice a huge difference until it was warm. once it was warm, Wow... it picks up faster, builds boost faster... raises egt's faster... lol. the EGT needle basically jumps to 1000, then creeps past 1200. i did my normal mod test of uphill full throttle in 3rd.
Max i saw was 23 lbs of boost and 1350 EGTs... and it took a long time to get that hot.
My downpipe should be here today or tomorrow, and then my 5" "sidewalk smoker" will be on... I'll let you guys know how it goes.
I've been bitten by the PMS bug bad...
Saving for a tranny, then sticks, then turbo then..... you get the idea.
 
  #2  
Old 11-21-2008, 12:03 PM
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Dan, what resistor do you put in for this mod?
 
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Old 11-21-2008, 12:07 PM
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75kohm, 1/2w 1% tolerance metal film resistor. I wanted a factory look, so i paid the extra penny for a surface mount resistor.
 
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Old 11-21-2008, 12:11 PM
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OK, I have a bad one I got from Cody to practice on. I'll take it apart and see if I can identify the resistor to be replaced. thanks.
 
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Old 11-21-2008, 12:16 PM
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what resistor is this thread about?
 
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Old 11-21-2008, 12:54 PM
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If you open up your injector drive module, and replace one resistor, your truck will make more powa! I'll find pics.
 
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Old 11-21-2008, 01:07 PM
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IDM Mod
heres a page with pictures and a little more description. where the switch is wired in in these pics, there was a small, square surface mount resistor with the numbers "6042" on the front.
 
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Old 11-21-2008, 01:26 PM
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is risk of damage after the mod
 
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Old 11-21-2008, 01:43 PM
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Originally Posted by cowmilker08
is risk of damage after the mod
No risk unless you screw up the install of the resistor then you could be out $150 to 700 for a new IDM.
 
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Old 11-21-2008, 01:43 PM
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Ther definately is risk. You can damage the board and the IDM is toast. Not too cheap to replace. If you are good with circuit boards then you will be fine. Not for the faint of heart or me to be honest.
I got mine from Beans for $100
 
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Old 11-21-2008, 02:13 PM
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It really wasnt too difficult. The board is Conformally(sp?) coated, thick. it'll absorb more heat than i'm willing to put in. Still, not for the faint of heart, but i wouldnt pay for one.
yes you risk damaging the board, and you risk extra wear on your injector solenoids, but i havent heard of the latter.
 
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Old 11-21-2008, 02:19 PM
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if you could email me detailed pics and instructions at cowmilker08@yahoo.com i would greatly appreciate it. how much does it help anyway?
 
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Old 11-21-2008, 02:20 PM
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It's a decent mod. I didnt take any pictures, sorry. I can email you instructions, and any pics i can find. give me a while.
Dan
 
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Old 11-21-2008, 02:26 PM
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Old 11-21-2008, 03:36 PM
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He doesnt really give directions. i already posted that too lol
 


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