IDM location
Elder User
Joined: Mar 2007
Posts: 889
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From: I'm there!
Originally Posted by Hiflyer746
Man that was a PITA. I mean was it really necessary to mount it back there? C'mon. 
Tim
Tim
I think they (Ford) thought that would be an ideal location away from the elements. Like the PCM, inside the truck! I've seen guys running without the fender liner, not so smart, IMO.
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Posting Guru
Joined: Jan 2004
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IDM mod,
I'm just replacing this one. . . but I've just recently read about the mod. . . what is it and what does it do?
Tim
Tim
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Elder User
Joined: Aug 2006
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From: Mountaintop, PA
I havent done it but it increaes electrical input to each injector thus giving each injector a faster reaction time. Something about replacing a diode in the IDM that requires soldering. When I was researching the IDM i kept seeing this mod over at the D-stop and goes by the name of "the joe servo" mod?? I think. I havent seen any one doing it over here. Do some research. Something lie ten horses can be brought out and mostly good feedback from those doing it.
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Post Fiend
Joined: Jul 2005
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From: 21791
Tim, Check this out. I have th RTV and i have the diodes. If you want ONE i can ship one out. I have a pack of 5 and i would like to keep three here. I got the diodes from DigiKey.
http://www.forgotton.net/diesel/idmmod/index.htm#9
http://www.forgotton.net/diesel/idmmod/index.htm#9
Senior User
Joined: Jul 2003
Posts: 491
Likes: 2
From: Spicewood, TX.
Might consider, NOT putting diodes in the IDM mod.
My IDM is on the drivers fender, where it should be(of course I relocated it)
You dont have to remove the inner fender, just loosen the back side of it, pull it out a ways and reach a long extension up in there, 10mm..
My IDM is on the drivers fender, where it should be(of course I relocated it)
You dont have to remove the inner fender, just loosen the back side of it, pull it out a ways and reach a long extension up in there, 10mm..
Postmaster
Joined: Dec 2005
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Well, i was bored tonight and did some reading. According to Servo, the one who invented this mod, said that on the 01 and newer IDMs the procedure that is listed on that site will fry the IDM. I have the link to the other forum if anyone is interested PM me.
Postmaster
Joined: Jun 2006
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From: Fulltime RVer
Originally Posted by John311t
Well, i was bored tonight and did some reading. According to Servo, the one who invented this mod, said that on the 01 and newer IDMs the procedure that is listed on that site will fry the IDM. I have the link to the other forum if anyone is interested PM me.
Senior User
Joined: Mar 2007
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From: Kingsland, GA
Originally Posted by ernesteugene
I've read the Joeservo write up on Diesel Stop also, and he says that jacking the voltage up from 110V to 140V decreases the turn on time from 560uS to 440uS. I see how this gives more hp with an OEM PCM, but why can't a chip provide the same benefit without the IDM mod? Seems like a chip can advance timing and increase PW to get a similar effect.
Post Fiend
Joined: Jul 2005
Posts: 14,582
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From: 21791
It's not a diode, its a resistor. More resistance=more pressure, right?
Edit- Oops, i read up and saw where i started using the term "diode" which would certainly fry the IDM. Sorry for the mistake.
Edit again- Zwalters i was looking at your signature. Rudolph Diesel invented the Diesel engine. Adolf was that guy with the square moustache...
Edit- Oops, i read up and saw where i started using the term "diode" which would certainly fry the IDM. Sorry for the mistake.
Edit again- Zwalters i was looking at your signature. Rudolph Diesel invented the Diesel engine. Adolf was that guy with the square moustache...
Last edited by PowerstrokeJunkie; Mar 25, 2007 at 06:50 PM.