What is this Electrical Connection For

[mcyates]

I noticed it was off, plugged it in and now my ESP light has extinguished on the dashboard! It has been constantly on since my last service a month ago!

The connection i'm talking about is the one with the green paint on the plastic connection. (NOT THE ONE WITH THE GREEN WIRE)

 

[f0xy]

Its the MAP sensor

 

[Tom@JMS]

That must have been running like a bag of nails for a month!

It's the Manifold Absolute Pressure sensor (as above: MAP). It tells the ECU the atmospheric pressure in Mbar dependent on the throttle position within the plenum chamber.

 

[mcyates]

Yeah it was and it has been stalling when first starting the car up!! I know I didn't un clip it so i'm wondering how its come off!!

Runs fine now!

 

[mcyates]

I've also noticed the MPG has been poor! I've been driving from Portsmouth to Middlesbrough and back the past 2 weekends. This won't have damaged/clogged up the engine!!