Why AIH Delete
Post Fiend
Joined: Sep 2003
Posts: 6,096
Likes: 26
From: Mesa AZ
I used this plug:
Riffraff Diesel: RDP AIH Tapped Fitting
and the dfuser code eliminator at the bottom of this page:
DFUSER Diesel Performance Products Exhaust High Performance Part Diesel Intake Diesel Power Chips
eliminator install instructions:
http://www.dfuser.com/Install%20Guid...2004-12-27.pdf
Riffraff Diesel: RDP AIH Tapped Fitting
and the dfuser code eliminator at the bottom of this page:
DFUSER Diesel Performance Products Exhaust High Performance Part Diesel Intake Diesel Power Chips
eliminator install instructions:
http://www.dfuser.com/Install%20Guid...2004-12-27.pdf
To be honest, I still can't figure out how that code eliminator wire would help when placed like the instructions say. Seems to me that the wire should have a big resistor inline and connect the large terminal on the AIH relay to the wire from the engine harness. However, I've never tried it for fear of frying my PCM.
Looking at the OEM set up...there are two wires connected to the heater. One wire comes straight from the AIH relay (heavy gauge wire). On the same stud, but separated by an insulator, there is another wire that runs to the engine harness on the driver's side. What happens with that wire? I presume that is the wire that runs to the PCM and wants to see resistance through the heating element so shouldn't that wire be fed a resisted power signal to eliminate the code?
Thread Starter
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Logistics Pro
Joined: Oct 2011
Posts: 3,953
Likes: 120
From: Mcdonough, GA
Sorry Timmyboy, I just figured out what OP means. To many acronyms around here.
I'm from just south of Atlanta GA.
Does this mean I'm banned
I'm from just south of Atlanta GA.
Does this mean I'm banned
Posting Guru
Joined: Mar 2011
Posts: 1,037
Likes: 0
From: Florida
I've been wondering about this- does the code only show up in AE? I've got a scangauge and it doesn't show any codes but I know it won't display all codes.
Post Fiend
Joined: Sep 2003
Posts: 6,096
Likes: 26
From: Mesa AZ
Posting Guru
Joined: Mar 2011
Posts: 1,037
Likes: 0
From: Florida
I've been thinking about buying AE, this is either another reason to buy it or a reason not to buy it...
Post Fiend
Joined: Sep 2003
Posts: 6,096
Likes: 26
From: Mesa AZ
If you plan on keeping your truck for the long term...AE is a very sensible tool to purchase and learn how to use.
Posting Guru
Joined: Mar 2011
Posts: 1,037
Likes: 0
From: Florida
I hear y'all, it was just a joke. I've got the comparable tool for another one of our diesels and it has paid for itself many times over.
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Posting Guru
Joined: Jan 2007
Posts: 2,364
Likes: 3
From: Gilbert Az.
Isn't the aih activated by a relay? Why can't we just fool the PCM at the relay box & eliminate the extra complication on the engine! I'm going to work on this idea, I'll post my results!
Jim & fat Monty
Jim & fat Monty
Posting Guru
Joined: Mar 2011
Posts: 1,037
Likes: 0
From: Florida
I bought AE, DTC scan does not show 0541. I do have five other codes but not that code. I wonder what the difference is since we both installed the eliminator the way dfuser said to.
Cargo Master
Joined: Aug 2009
Posts: 2,137
Likes: 13
From: Glendive, MT
I have that same code eliminator wire and installed it as described and it doesn't work. I still get the code.
To be honest, I still can't figure out how that code eliminator wire would help when placed like the instructions say. Seems to me that the wire should have a big resistor inline and connect the large terminal on the AIH relay to the wire from the engine harness. However, I've never tried it for fear of frying my PCM.
Looking at the OEM set up...there are two wires connected to the heater. One wire comes straight from the AIH relay (heavy gauge wire). On the same stud, but separated by an insulator, there is another wire that runs to the engine harness on the driver's side. What happens with that wire? I presume that is the wire that runs to the PCM and wants to see resistance through the heating element so shouldn't that wire be fed a resisted power signal to eliminate the code?
To be honest, I still can't figure out how that code eliminator wire would help when placed like the instructions say. Seems to me that the wire should have a big resistor inline and connect the large terminal on the AIH relay to the wire from the engine harness. However, I've never tried it for fear of frying my PCM.
Looking at the OEM set up...there are two wires connected to the heater. One wire comes straight from the AIH relay (heavy gauge wire). On the same stud, but separated by an insulator, there is another wire that runs to the engine harness on the driver's side. What happens with that wire? I presume that is the wire that runs to the PCM and wants to see resistance through the heating element so shouldn't that wire be fed a resisted power signal to eliminate the code?
Sorry. I replyed to the wrong post
Laughing Gas
Joined: Nov 2010
Posts: 1,193
Likes: 2
From: D.C. but heart's in TEXAS
In order to "completely delete it," you remove it with a crescent wrench. It will take you 5 minutes, including cleanup. There are directions all over this website with "how to" and pics. Super simple.
Cargo Master
Joined: Feb 2005
Posts: 2,837
Likes: 1
I had never heard of the AIH delete until I bought my gauges from Clay at RRE a few years ago. JD gave me his old homemade AIH delete plug with fitting for boost pressure gauge and it seemed to make the install much easier than tapping in anywhere else. My only word of caution is that if you remove the AIH, don't remove the bolt that the ground wire runs to on the drivers side valve cover. We did, thinking the bolt hole was a blind hole, but in my case it wasn't and I drove around with a hellacious boost leak for a few months until I realized what I had done.