The message to which you are about to reply is shown first. GO TO REPLY FORM



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

MAP sensor S60

posted by  jadnhm on  Wed Sep 14 06:26 CST 2011
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Tue May 22 18:03 CST 2012
[RELATED]

You're right about the location KlausC.

I think it's a bit misleading to call this a MAP sensor (though everyone including the parts dealers do anyway).

MAP usually stands for Manifold Air Pressure, but this sensor is clearly measuring ambient air pressure and NOT air pressure in the intake manifold.

Fuel injection systems typically either measure manifold air pressure OR incoming air mass to determine the fuel mixture (in open loop operation - closed loop relies on O2 sensor). Our cars have an Air Mass Meter (sometimes called AMM or MAF for Mass Air Flow) and not a true MAP.

The ambient air pressure sensor we often see referred to as a MAP is measuring the current air pressure to make adjustments for altitude. Ambient air pressure can be quite different depending on your altitude and you can adjust the mix pretty substantially for sea level driving or mountain driving.

http://en.wikipedia.org/wiki/MAP_sensor>MAP

AMM



--
1998 V70 AWD->FWD->AWD Turbo 220k+






USERNAME
Use "claim to be" below if you don't want to log in.
PASSWORD
I don't have an account. Sign me up.
CLAIM TO BE
Use only if you don't want to login (post anonymously).
ENTER CAPTCHA CODE
This is required for posting anonymously.
OPTIONS notify by email
Available only to user accounts.
SUBJECT
MODEL/YEAR
MESSAGE

DICTIONARY
LABEL(S) +
IMAGE URL *
[IMAGE LIBRARY (UPLOAD/SELECT)]

* = Field is optional.

+ = Enter space delimited labels for this post. An example entry: 240 muffler


©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.