Quantcast How to Test a Manifold's Absolute Pressure Map Sensor - Ford Truck Club Forum
FTC Toolbar Tech Archives Entertainment Social Sites Current Advertisers Advertise With Us Vote Donate
Go Back   Ford Truck Club Forum > GARAGE TALK > Garage Talk: Shop Class 101
  Dear Guest, you can now use your Facebook account to securely log into this site, click the icon to connect!   
Register Privacy Policy Home Forum Blog Gallery Garage

Garage Talk: Shop Class 101
This is the place to post technical articles and completed projects. Please make sure they are complete, check for typos and host all images in the FTC gallery located Here. If you need help, please ask the staff.

Be sure to also check out our complete Tech Archives.
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Display Modes
Old July 15th, 2011, 09:19 AM
JSoko's Avatar
JSoko JSoko is offline


Join Date: Jun 2009
Location: Northwest Georgia
Posts: 12,733
Images: 581
Likes : 22
Liked 115 Times in 97 Posts
Thumbs up How to Test a Manifold's Absolute Pressure Map Sensor

How to Test a Manifold's Absolute Pressure Map Sensor

Test a Manifold's Absolute Pressure Map Sensor The manifold absolute pressure sensor, or MAP sensor, is generally used in place of the mass airflow sensor in an automobile. It preceded the mass airflow sensor and was much less efficient. The MAP sensor measures the pressure in the intake manifold through a vacuum. The more pressure, the lower the vacuum and the lower the voltage output. The lower the pressure, the higher the vacuum and the higher the voltage output signal. The mass airflow measures the volume of air moving into the manifold.

Things You'll Need

Connect the voltmeter to the MAP sensor by connecting the black lead to a good ground and connecting the red lead to the center of the three wires in the MAP sensor's electrical connector.

Turn the ignition key on with the engine off. The voltage displayed on the voltmeter should be between 4.5 to 5 volts.

Start the engine and the voltage displayed should be .5 to 1.5 volts at sea level or close. The voltage will decrease as altitude increases. If the voltage differs greatly on either test, the MAP sensor is fried. Replace it.


For Those Who Fought For It...
Freedom Has A Taste The Protected Will Never Know.

Reply With QuoteReplyShare with FacebookEmail this PageLike This Post


(View-All Members who have read this thread : 10
Booba5185 , DoubleDee , HawaiianF150 , JSoko , mucklife13 , nine5flareside , Russo2 , Stanw , whitesleeper , Workingf250
Thread Tools
Display Modes

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
The Perfect Tire Pressure AutomotiveTV AutomotiveTV 2 July 6th, 2010 08:47 AM
Jet Mass Air Sensor Bates88 Garage Talk: Engine & Drivetrain 1 July 5th, 2010 08:45 AM
Testing a Ford 5.0L throttle position sensor BADSHOE BADSHOE Productions 0 March 14th, 2010 06:07 PM
Testing a 5.0L Ford Throttle Position Sensor Video BADSHOE BADSHOE Productions 1 January 5th, 2010 04:42 PM
Teen's beating death puts pressure on officials BigT67 General Discussion
10 September 29th, 2009 01:47 PM

FordTruckClub.net is not authorized, endorsed or affiliated with the Ford Motor Company
or any of their subsidiaries. Ford® is a registered trademark of the Ford Motor Company

Powered by vBulletin® Version 3.8.6 Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.