MAP sensor - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



Welcome Enthusiast! If you already own a Chevy TrailBlazer or GMC Envoy or perhaps thinking of purchasing such a vehicle, then you have come to the best TrailBlazer and Envoy site on the net! Rainier, Bravada, Ascender, and 9-7x owners welcome too!

You are currently viewing our site as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to search and post topics, communicate privately with other members, respond to polls, upload content, and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.
Join Today!
Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 General Tech Q&A > General

General If it doesn't fit in any other forum

TrailVoy.com is the premier GMC Envoy Forum on the internet. Registered Users do not see the above ads.
Reply
 
Thread Tools
  #1  
Old 12-30-2006, 09:48 PM
blue11 blue11 is offline
New Member
 
Join Date: Dec 2006
Posts: 6
MAP sensor

I just took the wifes 02 trailblazer to the dealer for a CEL coming on off and on.

they told me it was the map sensor intermittly causing it to go on and off and replaced it.

anyone have any information on the MAP sensor????

thanks
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 12-30-2006, 10:44 PM
cliffwilson's Avatar
cliffwilson cliffwilson is offline
Junior Member
 
2005 Chevy TrailBlazer LS
Summit White 4.2L I6 2WD
Join Date: Oct 2005
Location: Orange Park, FL
Posts: 86
The Manifold Absolute Pressure (MAP) sensor is attached to the intake manifold. Electrically, it is a potentiometer, using the standard three wire configuration of a 5 volt reference circuit, a low reference circuit (ground), and MAP sensor circuit signal. The voltage signal to the PCM relative to the 5 volt reference provides the vacuum state of the intake manifold. Also, prior to cranking, its signal establishes barometric pressure. The data is used by the PCM to assist in fuel management. The MAP signal is coordinated to a table of expected values for throttle position and engine speed. When the MAP signal is outside the predicated ranges, a DTC (Diagnostic Trouble Code) will be set.
Reply With Quote Quick reply to this message
  #3  
Old 12-31-2006, 11:26 AM
blue11 blue11 is offline
New Member
 
Join Date: Dec 2006
Posts: 6
great thanks cliff, sounds like it does have a lot to do with gas milage then so the dealer was telling me the truth.

thanks
Reply With Quote Quick reply to this message
  #4  
Old 11-15-2008, 08:18 AM
tomsmith tomsmith is offline
Junior Member
 
2004 Chevy TrailBlazer LS
Black 4.2L I6 4X4
Join Date: Dec 2006
Location: Toronto
Posts: 26
Hey all,

Can someone post a pic of where the MAP sensor is located? my 2004 TB LS is throwing a P0106 code

I've cleaned the throttle body but it's still there

Many thanks
Reply With Quote Quick reply to this message
  #5  
Old 11-15-2008, 06:34 PM
brendanpower's Avatar
brendanpower brendanpower is offline
Senior Member
 
2007 Chevy TrailBlazer LT
Moondust Metallic 4.2L I6 4X4
Join Date: Dec 2007
Location: Lloydminster, Alberta
Posts: 678
On top of the intake. See the red circle in the attached Picture
Attached Images
File Type: bmp map[2].BMP‎ (139.6 KB, 4673 views)
__________________
Brendan,
PCMFORLESS Tune, CAI, HID's, PIAA's, Mirror Signals, Glasspack & Tip
Reply With Quote Quick reply to this message
  #6  
Old 11-15-2008, 08:07 PM
tomsmith tomsmith is offline
Junior Member
 
2004 Chevy TrailBlazer LS
Black 4.2L I6 4X4
Join Date: Dec 2006
Location: Toronto
Posts: 26
Thank you very much brendanpower

I'm guessing I'm OK to clean this with throttle body cleaner or electronics cleaner (I have a spray thats specifically designed for autmotive electronics)?

I'm a little new to this board, can someone recommend a good online retailer for parts (the MAP being the first )

I tried creating a new thread, but guess I haven't reached the threshold yet
Reply With Quote Quick reply to this message
  #7  
Old 11-16-2008, 08:39 PM
wardak33's Avatar
wardak33 wardak33 is offline
TrailVoy Alumni
 
2002 Olds Bravada
Pewter Metallic 4.2L I6 AWD
Join Date: Nov 2007
Location: Schaumburg, IL
Posts: 2,369
MAF Sensor Cleaner is more effective, but i guess throttle body cleaner would work too. just a thought.
__________________
2002 Oldsmobile Bravada: 4.2L I6 w/ G80 Locker, AWD, TBSS springs, HD bilsteins, 6000k HIDs, Mobil1, Iridium Plugs
Reply With Quote Quick reply to this message
  #8  
Old 12-04-2008, 12:12 AM
wardak33's Avatar
wardak33 wardak33 is offline
TrailVoy Alumni
 
2002 Olds Bravada
Pewter Metallic 4.2L I6 AWD
Join Date: Nov 2007
Location: Schaumburg, IL
Posts: 2,369
just wondering, but have you fixed your problem yeT?
__________________
2002 Oldsmobile Bravada: 4.2L I6 w/ G80 Locker, AWD, TBSS springs, HD bilsteins, 6000k HIDs, Mobil1, Iridium Plugs
Reply With Quote Quick reply to this message
  #9  
Old 12-31-2008, 08:59 AM
shelrandy shelrandy is offline
Junior Member
 
gmc envoy GMC Envoy SLE
Cranberry Red Metallic 4.2L I6 4X4
Join Date: Nov 2008
Location: Reading Pa
Posts: 9
shelrandy new to the forum

hello all I have a 2006 gmc envoy and it shut down whille driving
GMC dealer says the only bad part on the vehicle is a bad map sensor

my car has been thru every computer diagnostic all show no issue
we replaced the PCM no help no O2 sensors or catalytic convertewr..no fuel pump issues no wiring issues..

I am hoping the map sensor is my problem 2 solid days in the shop my wallet is hurting.. oh yeah and 3000 miles out of warranty..http://forums.trailvoy.com/images/smilies/frown.gif
Reply With Quote Quick reply to this message
  #10  
Old 12-31-2008, 07:12 PM
wardak33's Avatar
wardak33 wardak33 is offline
TrailVoy Alumni
 
2002 Olds Bravada
Pewter Metallic 4.2L I6 AWD
Join Date: Nov 2007
Location: Schaumburg, IL
Posts: 2,369
MAP sensors could cause problems like that. I just recently replaced mine, and it wasn't that hard to do. If the dealer says its the sensor, i'd go with their opinion. They use a tech2 scanner, which tells them EVERYTHING. hope this helps. and if you need help with the MAP sensor, just let me know.
__________________
2002 Oldsmobile Bravada: 4.2L I6 w/ G80 Locker, AWD, TBSS springs, HD bilsteins, 6000k HIDs, Mobil1, Iridium Plugs
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum forums, you must first register.

Please enter your desired user name, your email address and other required details in the form below.
(Only letters, numbers, dashes and underscores are permitted for user names)
The user name that you choose is permanent and can never be changed.
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:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Remove alternator to change Thermostat? mastermonkhabib Engine Tunes/Mods 139 01-23-2013 12:19 AM
How do I change a MAP sensor on my 2002 Tblazer LS kota Air Induction 2 03-10-2008 05:35 PM
MAP sensor location? jdwest Air Induction 7 02-18-2008 11:37 PM
Oxygen Sensor readings xceebeex OEM Issues 6 01-09-2008 10:41 AM
Map Sensor McKinley 02-09 Vortec 4.2L I-6 Engine and Drivetrain 1 04-22-2007 03:31 PM


» Sponsors

Advertising Info

All times are GMT -4. The time now is 01:27 PM.


Chevy TrailBlazer and GMC Envoy Enthusiasts - Copyright 2004 - 2009 All Rights Reserved.
All trademarks referenced herein are property of their respective owners.
RSS Feed