high idle after battery disconnect

[jimbob88 10]

i've had my battery off for a couple of days while i had the flyhweel machined, it all went back together fine and started up well on its "choke" but after a while when it normally drops down to around 8-900 revs it didnt. it wont drop below 1000-1100. everything was fine before it went on the ramp.

 

is it because i've reset the ecu with the battery been off for so long or is this not normal? should i be chasing an air leak? im planning on taking it out for a spin about today just to see if it settles back into it's "values"

 

cheers jamie

[seanl82 23]

With the flywheel lightened, I would imagine it will be idling a little high due to the lack of weight. I had it done to my Golf a few years ago, and don't remember it having a higher idle than normal, but I guess that could be the reason.

[dr_mat 0]

Nah, the idle is controlled by the ECU. More likely you knocked a temperature sensor and it's running it in warm-up mode all the time. Is it running monster rich and sucking at fuel economy?

[jimbob88 10]

havent had it oiut on the road yet as its still waiting for exhaust gaskets and stuff but it did seem a little rich on the exhaust yeah, i shall investigate today.

 

thanks for the replies guys

Edited September 22, 2012 by jimbob88

[jimbob88 10]

Just to give this thread some closure.

 

Go the car off the ramp today and took it for a drive, after 10 mins or so of varied driving the car now idles perfectly so it was as i suspected just relearning its parameters :)

 

All's well

[VAG-hag 0]

Sweet mate, nice result. Is lighter fly worth having then?

[jimbob88 10]

Yeah for the cost etc its a worthwhile mod, not massively different but it definitely climbs the revs quicker :)

[VAG-hag 0]

Winner :-)