AIH Delete
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AIH Delete
This AIH delete mod is it worth it?? is there actually any difference at all?? thet AIH is right in the middle front of the butterfly right?? kinda near our GPR??? and is there any codes get thrown when doing this mod??
Post Fiend
Joined: Feb 2007
Posts: 14,541
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From: Dallas-Ft. Worth
Butterfly?? No butterflies in our trucks (except in the stock turbo outlet 
).
There is a soft code stored in the PCM, but no CEL. You can put in a 470 ohm resistor in place of the AIH and it will defeat the soft code.
It's a pretty big hunk of crap smack in the middle of the intake tube, so getting rid of it has to help flow, even if it's just a little. I simply took mine out of the spider, cut off the coil, broke the ceramic insulator, and sawed off the conductor. I'll eventually put in a tapped plug for my boost gauge pickup, but I haven't gotten 'round to it yet.
).There is a soft code stored in the PCM, but no CEL. You can put in a 470 ohm resistor in place of the AIH and it will defeat the soft code.
It's a pretty big hunk of crap smack in the middle of the intake tube, so getting rid of it has to help flow, even if it's just a little. I simply took mine out of the spider, cut off the coil, broke the ceramic insulator, and sawed off the conductor. I'll eventually put in a tapped plug for my boost gauge pickup, but I haven't gotten 'round to it yet.
Postmaster
Joined: Dec 2008
Posts: 3,340
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Here is a good link that show the location and instructions: http://www.dieselsite.com/index.asp?...PROD&ProdID=48
You can also go to autozone and get a oil drain plug off a 2000 dodge diesel truck that will work as a plug as well. I got it for about $8. I terminated the hot wire back to the aih relay and left the ground in place. I kept the aih in case I ever wanted to re-install it.
You can also go to autozone and get a oil drain plug off a 2000 dodge diesel truck that will work as a plug as well. I got it for about $8. I terminated the hot wire back to the aih relay and left the ground in place. I kept the aih in case I ever wanted to re-install it.
Post Fiend
Joined: Feb 2007
Posts: 14,541
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From: Dallas-Ft. Worth
Yep. I pulled the ground and hot wire and tossed them in the trash can. Another useless POS that doesn't need to be there.
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Post Fiend
Joined: Feb 2007
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From: Dallas-Ft. Worth
That's why you put the resistor in place of the AIH. The PCM "sees" the resistor and thinks the heating element is still there. You have to put the same resistor in place of the EBPV solenoid if you gut your pedestal too, or you get a similar soft code. I still have to do this -- haven't gotten to it yet.
Cargo Master
Joined: Jan 2009
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From: OKC, OK
That's why you put the resistor in place of the AIH. The PCM "sees" the resistor and thinks the heating element is still there. You have to put the same resistor in place of the EBPV solenoid if you gut your pedestal too, or you get a similar soft code. I still have to do this -- haven't gotten to it yet.
Post Fiend
Joined: Feb 2007
Posts: 14,541
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From: Dallas-Ft. Worth
EDIT: I plan on putting in a small piece of wire in place of the big honkin' one that was attached to the AIH. I'll put a couple ring terminals on each end of the wire, and the resistor soldered in the middle of the wire someplace with heat shrink over it. The 470 ohm resistor only passes about 450mW, so a smaller wire is easier to work with, and all you need since there won't be nearly the current on it.
Something like this: O-=========-/\/\/\/\-===========-O
Postmaster
Joined: Jan 2009
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From: Glen Rose,Texas
Butterfly?? No butterflies in our trucks (except in the stock turbo outlet ).
There is a soft code stored in the PCM, but no CEL. You can put in a 470 ohm resistor in place of the AIH and it will defeat the soft code.
It's a pretty big hunk of crap smack in the middle of the intake tube, so getting rid of it has to help flow, even if it's just a little. I simply took mine out of the spider, cut off the coil, broke the ceramic insulator, and sawed off the conductor. I'll eventually put in a tapped plug for my boost gauge pickup, but I haven't gotten 'round to it yet.
).There is a soft code stored in the PCM, but no CEL. You can put in a 470 ohm resistor in place of the AIH and it will defeat the soft code.
It's a pretty big hunk of crap smack in the middle of the intake tube, so getting rid of it has to help flow, even if it's just a little. I simply took mine out of the spider, cut off the coil, broke the ceramic insulator, and sawed off the conductor. I'll eventually put in a tapped plug for my boost gauge pickup, but I haven't gotten 'round to it yet.
Post Fiend
Joined: Feb 2007
Posts: 14,541
Likes: 2
From: Dallas-Ft. Worth
See ^^^above^^^. You need at least a half watt 470 ohm resistor. You can get some at RadioShack. I picked up some 1W jobbers, just because I believe in overkill. LOL....