Idle funny after diconnecting battery?

[Big P 1]

Hi people, i disconnected my battery yestarday and now when i drive it the idle drops really low so much so the when i was parking it today it stalled?

Any one shed some light on this for me or had the same problem?

Its a 1996 OBD2

cheers for any help Paul

[silverline 0]

funny, mines exactly the same after i disconnected my battery. mines an obd1.

[binliner 0]

mght need to reset the throttle body... after reconnecting the battery turn the ignition on so the dash lights come on and listen to the throttle body (you'll hear whirring noises) when they stop then turn the ignition off and start the engine

what were you doing to disconnect the battery? I assume it was nothing that may have affected the idling?

[Big P 1]

I disconnected it so i could take the airbag off the steering wheel to remove the wheel, when i reconnected it i had to turn the ignition on and shut the doors the reconnect it for the air bag light to come on the go off, that was it, so should i now disconnect the battery again and to what you said for the throttle? cheers for the help Paul

[Eat this 2]

i havnt had the battery disconected but mine sometimes hunts on idle its obd2 so its not the isv

[silverline 0]

mine could be the isv. i disconnected my battery so i could get the engine out the car.

where exactly is the isv? its never actually been explained to me.

mine hunted any way so i replaced the crankshaft sensor but its even worse now %-6

[Big P 1]

Just disconnected and reconnected the battery then did what Justin(binliner) said and the car still idles funny, it stalled on me again, anyone got any more ideas, help please

Cheers Paul

[stockers 1]

i was told the idle is managed by the ecu,could disconecting the battery somehow affect that?

[silverline 0]

big p yours could be crankshaft sensor problem? i know thats cured some peoples idle problems.

[Big P 1]

its a possibility mate, would it show up on vag com if i plugged the car in?

cheers Paul

[Eat this 2]

is camshaft lambda sensor??

[Big P 1]

From what i can tell the camshaft sensor is behind the coil pack, the lamda sensor is on the exhaust bolted on to the cat

[FishWick 21]

VAG-COM is needed really. What we need is a regionalised thread stating who has it and what regions they can cover. We did that on the Corrado forum and it's been hugely successful. I've done countless scans and sent most people home no longer fearing the worst ;-)

With OBD2, do as Justin said but leave it on ignition stage 2 for 2 mins, then start it and let it idle for about 2 mins also. If no joy, your stepper motor could be faulty and that's a big

[silverline 0]

kev, could you come to norwich and do an obd1? how much would you charge for doing that?

lambda sensor measures oxygen levels in the exhaust and alters them accordingly.

camshaft sensor sensors camshaft timing in unison with crankshaft position.(i think)

yeah the camshaft sensor is in the upper timing chain cover. behind the coilpack. it works off the rear camshaft sprocket.

[Big P 1]

Hmmm thanks for the info kev, will give that a try, now, need to find some one near M3/M25/M4 area with VAG-COM, Anyone?

[Big P 1]

Right just tried it again after the advise from kev and it diodnt work, still the same, if a put the aircon on it still drops idle but not enough for it to stall