Sensor question - Chevy and GMC Duramax Diesel Forum
2011+ LML Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.

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post #1 of 14 (permalink) Old 12-31-2012, 04:58 PM Thread Starter
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Sensor question

Can anyone tell me what this sensor is? I'm guessing it was one of the EGR Pyrometer but since the EGR is disabled can I unplug it? I'm asking because in my new intake I have to move the air sensor and don't have enough wire with that sensor spliced into it.


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post #2 of 14 (permalink) Old 12-31-2012, 05:02 PM
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If that pipe is coming out of the cool side of the intercooler like I think it is, it's probably a temp./pressure sensor of some sort. I'm pretty foreign to the LMM. Give it some time, someone will chime in.

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post #3 of 14 (permalink) Old 12-31-2012, 05:33 PM
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Do you just want to unplug it to clean up the engine bay? Look for an EGR delete pipe and see if they have a bung for it. If not, cut it out of there.
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post #4 of 14 (permalink) Old 12-31-2012, 08:37 PM Thread Starter
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no i need it out of the way. my Banks intake is "modified" off an 08 and everything fits except that air flow sensor. Just curious as to if it could be removed or not without throwing another code or causing any problems.

2013 LTZ CCSB Z71 4x4,
H&S XRT Pro, AFE true 5 inch
S&B Cold Air Intake
Rancho 4in lift 2.5in rear
Alligator Resonator Delete
FASS 150 Lift Pump,
Isspro EV2 Factory Match Pyro and Boost, Edge CTS
Westin MAX Winch Tray and Bull Bar w/ 30in LED bar
Badlands 12,000 Winch
Skyjacker Custom Dual Steering Stabilizer,
Firestone Ride Rite Airbags
B&W Turnover Ball Gooseneck and Companion Fifth 2015.5 OEM Full Function Tow Mirrors
DSP Fog Light LED Cubes


35x12.5R18 with +18 offset XD riot


My Build Thread: Blue Granite LML Build Thread
Looking for Spare Parts? FS: Lots O parts and Goodies
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post #5 of 14 (permalink) Old 01-01-2013, 09:44 AM
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Quote:
Originally Posted by DURAMAXED OUT View Post
no i need it out of the way. my Banks intake is "modified" off an 08 and everything fits except that air flow sensor. Just curious as to if it could be removed or not without throwing another code or causing any problems.
You have hands and a wrench don't ya?

Unplug the sensor from the harness, start your truck, see if it throws a code. Drive the truck around the block, see if it throws a code. If all is well, remove the sensor, plug the hole with the proper plug and you, my friend, are off to the proverbial races.

If the truck throws a code when you first unplug the sensor, you might be doing some trimming on your CAI.

Don't be afraid. If it throws a code, reconnect the harness and clear the code or CEL. If you don't have a code reader, it will correct itself after a few key-starts.

Joker

Last edited by JOKER; 01-01-2013 at 03:01 PM. Reason: can't spell
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post #6 of 14 (permalink) Old 01-01-2013, 05:14 PM Thread Starter
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after a little modification, back in business.


2013 LTZ CCSB Z71 4x4,
H&S XRT Pro, AFE true 5 inch
S&B Cold Air Intake
Rancho 4in lift 2.5in rear
Alligator Resonator Delete
FASS 150 Lift Pump,
Isspro EV2 Factory Match Pyro and Boost, Edge CTS
Westin MAX Winch Tray and Bull Bar w/ 30in LED bar
Badlands 12,000 Winch
Skyjacker Custom Dual Steering Stabilizer,
Firestone Ride Rite Airbags
B&W Turnover Ball Gooseneck and Companion Fifth 2015.5 OEM Full Function Tow Mirrors
DSP Fog Light LED Cubes


35x12.5R18 with +18 offset XD riot


My Build Thread: Blue Granite LML Build Thread
Looking for Spare Parts? FS: Lots O parts and Goodies
LED Mirror Light DIY: HOW TO: LED Mirror Lights
Tow Mirror Conversion DIY 2015.5 Tow Mirror Conversion
Legal Headlight Mod DIY: HOW TO: Legal Headlight Mod for NBS Trucks
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post #7 of 14 (permalink) Old 01-01-2013, 08:14 PM
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Quote:
Originally Posted by DURAMAXED OUT View Post
after a little modification, back in business.

Was the issue the length of the factory harness? Did you relocate the MAF sensor in the CAI? Is that what I am looking at?

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post #8 of 14 (permalink) Old 01-01-2013, 08:26 PM
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That silver probe sticking up out of the elbow on the intercooler pipe is the cold air intake temp probe.
The sensor on the air intake is the MAF sensor, both are needed for the truck to function. Even if your deleted.


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post #9 of 14 (permalink) Old 01-01-2013, 08:42 PM
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Quote:
Originally Posted by FC5452 View Post
That silver probe sticking up out of the elbow on the intercooler pipe is the cold air intake temp probe.
The sensor on the air intake is the MAF sensor, both are needed for the truck to function. Even if your deleted.


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There's your answer^^^.

All I was worried about is relocating the MAF sensor in the CAI, as it may not read correctly and confuse the ECM. I might be paranoid though.
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post #10 of 14 (permalink) Old 01-01-2013, 08:43 PM Thread Starter
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Well I bought the intake off of a buddy that sold his 08 and put it on my 05. Then I sold my 05 and want to put it on my 11, but the sensor for the past two was on the elbow. And the 11 is right up front with that EGT gauge spliced into it. So I just moved the hole. If you buy the actual kit for the 11's that's where it is located. I just didn't want to spend another 400 when I can modify this one to work as before.

2013 LTZ CCSB Z71 4x4,
H&S XRT Pro, AFE true 5 inch
S&B Cold Air Intake
Rancho 4in lift 2.5in rear
Alligator Resonator Delete
FASS 150 Lift Pump,
Isspro EV2 Factory Match Pyro and Boost, Edge CTS
Westin MAX Winch Tray and Bull Bar w/ 30in LED bar
Badlands 12,000 Winch
Skyjacker Custom Dual Steering Stabilizer,
Firestone Ride Rite Airbags
B&W Turnover Ball Gooseneck and Companion Fifth 2015.5 OEM Full Function Tow Mirrors
DSP Fog Light LED Cubes


35x12.5R18 with +18 offset XD riot


My Build Thread: Blue Granite LML Build Thread
Looking for Spare Parts? FS: Lots O parts and Goodies
LED Mirror Light DIY: HOW TO: LED Mirror Lights
Tow Mirror Conversion DIY 2015.5 Tow Mirror Conversion
Legal Headlight Mod DIY: HOW TO: Legal Headlight Mod for NBS Trucks
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