[Shotimes] BARO sensor

[Paul Nimz]

The Manifold Absolute Pressure (MAP) sensor operates as a piezoelectric
(pressure-sensing) disc. However, rather than generating a voltage, its output
is a frequency change. The sensor changes frequency relative to intake
manifold vacuum. The sensor frequency increases as vacuum increases. The MAP
sensor allows the PCM to determine what the engine load is. Its signal affects
air/fuel ratio, ignition timing, EGR flow and altitude compensation.

The BARO sensor is used to sense the changes in barometric pressure, allowing
the PCM to sense the altitude at which the vehicle is operating. Its signal
affects air/fuel ratio, spark and EGR for altitude compensation.

Paul
  ----- Original Message -----
  From: Timothy Tyner
  To: shotimes@autox.team.net
  Sent: Friday, September 16, 2005 9:20 PM
  Subject: [Shotimes] BARO sensor


  What symptoms will I see (if any) of a bad BARO sensor?

  _________________________________________________________________
  Dont just search. Find. Check out the new MSN Search!
  http://search.msn.click-url.com/go/onm00200636ave/direct/01/
  _______________________________________________
  Shotimes mailing list
  Shotimes@autox.team.net
  http://www.team.net/mailman/listinfo/shotimes