[COLVERT]

Originally Posted by Jakg

Wierd issue, this...

If I'm cruising along, and pop it out of gear, and start to brake, the revs obviously fall off - but rather than fall to idle (~800 RPM), it falls a bit further (~600 RPM), which makes the engine quite harsh (akin to being on the edge of stalling).

Once the car stops, the revs stay at ~600 for half a second and then it returns to normal idle.

And all of this is while out of gear

Any ideas? Car idles fine, if I pop it out of gear but let it coast it idles properly as well.

Why do you, 'Pop it out of gear and coast' ????

You are probably upsetting your vacuum pump by letting the revs drop and then braking which needs to use vacuum.

The decrease in vacuum upsets the calibration of the fuel input by the ECU.


Colvert.