Battery disconnection - ECM reset?!

anbran1 · Post by **anbran1** » 05 Jul 2013, 21:27

I am trying to figure out why my S90 is not running right.

I read in the Chilton's manual (page 4-27) that if the battery is disconnected for more than 5 mins, driveability problems will occur for a short time while the ECM resets it's "adaptive fuel adapter"

This stalling problem has only been happening since I disconnected the battery for a few days...

Does this sound reasonable?

anbran1 · Post by **anbran1** » 06 Jul 2013, 06:23

Correction "Adaptive fuel Factor"

Post by **precopster** » 06 Jul 2013, 08:15

How many miles of driving and how much driving time has the engine been running for now since the battery reconnect?

The engine may need around 2-3 hrs of driving before fuel adaptation is complete.

anbran1 · Post by **anbran1** » 06 Jul 2013, 08:52

I just got back from a drive. For the first 10 mins or so, it was losing power and stalling out. Then after that, all of a sudden it started behaving and running beautifully...Took it for another drive around town and no problems at all...

I guess it "adapted" itself!

Thanks...

Post by **precopster** » 06 Jul 2013, 16:14

I owned a '93 960 for 3 years and never experienced this after multiple battery disconnects.

Are the plugs a nice brown color?

Perhaps they need regapping or replacement.

anbran1 · Post by **anbran1** » 08 Jul 2013, 16:48

I've never experienced that either, but I had the battery out of the car for a week. It runs very nice now...
If I had a problem with the plugs, it would still be running weird I think...