986 S problem at idle, engine won't rev and shakes, battery disconnected

[Gorthaur]

Originally Posted by tony_fury

Reading your post:
The problem started after you disconnected the battery to replaced the dash bulb. I can only assume that the battery was disconnected quite a long time while removing and reinstalling the dash.

Hi Tony and thank you for joining. The battery has been disconnected for 20 hours.

My guess is the ECU is having to re-learn all the sensor readings all over again.
You also had the GPS installed for your insurance. (Was this installed after the bulb replacement) (Battery disconnect again?)

GPS installed in April 2012 after battery replacement.

You state the GPS was installed on the positive side of your battery, is it drawing from the battery all the time.
(How old is your battery?)

My battery is 6 months old and yes, the GPS is always transmitting.

Also reading you stated that after the Indy checked for codes, the car warmed up for half an hour and ran fine.

Yes. But the same didn't happen on the next day.

You have no codes.
I would stop with the 1 minute procedures. Let the car reach operating temperature and re-learn the air/ fuel mixture readings.
Possibly get a volt meter and check the battery voltage after it sits overnight.

Overnight the battery is always connected to the smart charger.

My suggestion is to let the car run and warm up, let it re-learn.
Once warm, if it's running fine, take it for a a drive close by and don't baby it.

My 2 cents..
T

Thank you again, I will surely try.