1998 V6 30v Passat wont idle after battery change

**auspassat** · 13-12-2009, 05:25 PM

My 1998 Passat has been my pride and joy and I have never has a problem with the car. It is serviced every 10,000 without fail.

I recently had a new battery fitted ( yes it is the correct one).

The car will start and idle ok whilst auto choke is operating however as soon as you get to a corner or roundabout the car simply stalls.

Spoke to a mechanic who said take it for a long drive and it may reset the computers. No luck.

The question- is there anyone with sufficent computer equipment to be able diagnose the problem or do I need to take out a second mortgage and go the local VW dealer. I am based in south west Sydney near Liverpool however prepared to travel for the right person. Any recommendations would be very much appreciated. Thanks.

**Jmac** · 13-12-2009, 05:42 PM

Throttle body adaption reqd there, no base idle recognised. Changing the battery without keeping power to the ecu with an ecu saver will erase any learnt values
Cheers
Jmac

**h100vw** · 13-12-2009, 05:44 PM

Throttle body adaptation would probably fix it up. You can do that with VCDS. www.ross-tech.com

There's plenty of folk have the cables or you can hunt down an independent specialist.

Gavin

Beaten....................

**Jmac** · 14-12-2009, 08:21 AM

Originally Posted by h100vw

Throttle body adaptation would probably fix it up. You can do that with VCDS. www.ross-tech.com

There's plenty of folk have the cables or you can hunt down an independent specialist.

Gavin

Beaten....................

Cmon Gav you run 2 laptops like me, slowing down in your old age