fooling the intake air temp sensor ? - Diesel Truck Forum - TheDieselGarage.com
Thread Details Posted by turbo8781, this thread has received 4 replies and been viewed 2493 times.

 
LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old 09-08-2011, 04:58 PM Thread Starter
Junior Member
 
turbo8781's Avatar
 
Join Date: Mar 2009
Location: Roseburg, OR
Posts: 86
Points: 21,866
Thanks: 4
Thanked 1 Time in 1 Post
fooling the intake air temp sensor ?

I notice that my pickup runs better when its cold outside and i was wondering if anybody knows of a way to fool the air temp sensor?.
Just a thaught.
turbo8781 is offline  
Sponsored Links
Advertisement
 
post #2 of 5 (permalink) Old 09-08-2011, 07:33 PM Thread Starter
Junior Member
Threadstarter
 
turbo8781's Avatar
 
Join Date: Mar 2009
Location: Roseburg, OR
Posts: 86
Points: 21,866
Thanks: 4
Thanked 1 Time in 1 Post
gues i should have added that it seems like the timing is more advanced when the weather is cooler. I can hear a deffinite difference and it feels more crisp. I can hear the change in the sound of the fuel knock when accelerating on a cold morning, after you start to give it some fuel the knock starts to quiet down. then after you get up to speed and take the load off of the engine you can hear what sound like a step (advance) in the timing.
Just wondering if I can trick the ECM in to make it run that way all the time by thinking that its always cold outside ?
turbo8781 is offline  
post #3 of 5 (permalink) Old 09-11-2011, 03:22 AM
Senior Member
 
Join Date: Dec 2008
Posts: 2,063
Points: 84,012
Thanks: 43
Thanked 150 Times in 146 Posts


It is air density not the temperature sensor. A cool day with just a light mist is the best.
later is offline  
post #4 of 5 (permalink) Old 09-11-2011, 03:59 PM
Junior Member
 
Join Date: Nov 2009
Posts: 3,533
Points: 70,106
Thanks: 69
Thanked 655 Times in 578 Posts
You have to tell us what truck what year what motor what trans, the more information the better to give an opinion!
The engine will sound different when cold because the fuel knock from the uncontrolled burn is a lot bigger, the warmer it gets the amount of controlled burn rises, as the uncontrolled burn becomes less.

1988 ford van fresh overhaul, 1991 nissan pick-up 1993 Caprice 2000 GMC S10 Blaser 2007 nbs 3500 GMC 4x4 crew-cab long box 17 inch single wheels Duramax Alison. BW turnover Ball. Furakawa FL35 loader. Retired, HD mechanic, worked on engines all my life. Fabricator welder. electrician. in the process of finishing my new shop. Live in Rock Creek B.C. Wife has a fruit stand.
Johnp3 is offline  
post #5 of 5 (permalink) Old 09-11-2011, 08:51 PM Thread Starter
Junior Member
Threadstarter
 
turbo8781's Avatar
 
Join Date: Mar 2009
Location: Roseburg, OR
Posts: 86
Points: 21,866
Thanks: 4
Thanked 1 Time in 1 Post
sorry. its a 99 24 valve with the 5 spd. in cold weather you can deffinatly hear the timing change while you're driving in the cold weather. I din't mean you can hear a change from hot to cold days, which you can hear that too but that isn't what I meant. If I recognise your user name correctly then you spend a fair amount of time in the heavy duty forum so the closest explanation I can give you is that it sounds like a 444 with STC. Under a light load it clatters a little louder from the advanced timing and as soon as you put some load on it you can clearly hear ir retard the timing. Just thaught there might be a sensor for the air intake that had some affect on the timing. And yes it does run a lot better on a cool damp morning my 3406 B and E are the same way. Thanx for the input guys
turbo8781 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Diesel Truck Forum - TheDieselGarage.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
7.3l Intake air temp sensor jdydiesel 1994-2003 7.3L Power Stroke 17 05-12-2011 08:20 PM
Oil Temp Sensor Port? DesertSands 2003-2007 6.0L Power Stroke 1 12-15-2010 10:03 PM
Cat 3116e: Fuel Temp Sensor & Boost Pressure Sensor probablecause Medium and Heavy Duty 0 02-03-2009 01:54 AM
air temp sensor droolinforparts 2003-2007 6.0L Power Stroke 4 03-12-2008 02:06 AM
C-7 DIY sensor fooling imported_CarterKraft Medium and Heavy Duty 2 10-12-2007 08:16 AM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome