wagongotya

+ 2

doublecabmel

Just got the car back and ended up doing the 60k major service. Good thing I did. Dirty air filter, original plugs (fouled), and damaged plug wire on cylinder #1. Gonna take the car out and run it hard for some time. It already is running much better. Will keep you posted

PRSWILL

Old post but this happened to me today- after I disconnected the battery to work on the stereo for a while. Ran the car for about 30 minutes- and it stopped. Wondering if it's something to do with the voltage to the DME after you disconnect/ reconnect a battery. Weird.

Meenrod

This is a common 993 occurrence. The ECU needs to learn throttle position and when a battery is disconnected for a period of time the learning is lost and needs to relearn. It should right itself after a couple days or a few miles.

71-3.0-911

As Meenrod said, this is the ecu relearning. Expect similar behavior every time you disconnect the battery. Not a concern.

IainM

...and probably the #1 reason to use a battery maintainer rather than disconnect the battery over winters

X2 if your smog test is in March

PRSWILL

yup - back to normal today!

Bernie930

Nope, not battery relearn!
A 98 should not do this even with a light flywheel! U likely have bad ignition system or a vacuum leak on that car. Guarantee bet, put new quality ignition wires and plus and a **** load of $$$$ she will be running just fine 🙂

71-3.0-911

Nonsense. The post right above says this was resolved. Guaranteed wrong.

audiporsche71

This. Observed same issue with idle/stalling on my test drive after completing Tore headlight upgrade (battery disconnected). On my next drive all seemed back to normal.

NH993Cab

Awesome info in this thread. I just reconnected my battery after winter storage and it stalled at the exact same place it stalled last spring. Happened a couple of times on the drive when coasting to a stop. Guess I’ll just let it run for 15 min.