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Old 01-11-2009, 01:21 AM   #1
Scooby Newbie
Member#: 186772
Join Date: Aug 2008
Default Battery disconnect, bad idle.

1996 Impreza Lx.

My battery was recently disconnected, and now the engine refuses to idle. The car drives (if continually given gas), but if I brake and slow down the engine seems to enter a limp mode and no longer accepts any revs at all, and if it comes to a complete stop (such as at a stop sign) the engine stalls. I was told this could be due to an ECU reset and driving it for awhile the ECU would "relearn" how to idle. I did this by taking it on the highway for awhile but nothing changed. Any ideas on what's causing the problem?
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Old 01-11-2009, 02:13 AM   #2
Uncle Scotty
*** Banned ***
Member#: 16200
Join Date: Mar 2002
OK buy Nates beans


try this
car cold as in not driven in 8 hours or more
disconnect the battery......press brake pedal 2-3 times

re-connect battery

out the key in and start the car

Let the car warm up until the radiator fans come on and the thermostat opens....15-20 minutes maybe...

turn the car OFF and take the key out

put the key back in and start the car and go for a drive

also....why was the battery disconnected and what was done at that time????
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Old 01-11-2009, 11:21 AM   #3
Scooby Newbie
Member#: 199818
Join Date: Jan 2009
Chapter/Region: NWIC
Location: Mountlake Terrace, Washington
2008 WRX
WR Blue


it could just be a coincidence that the problem showed up at the time it did. One time I went in to get my brakes checked and after the report saying that they were fine and everything I started having braking problems. well the idiot workers only checked one side of the disk brakes which for whatever reason did not grab when braking and so the outside calipers had something like 80% life left and the inside ones were worn down to bare metal. this problem came up right after I had my service done and I thought maybe the technician left something in my car and that it couldn't be the brakes... well driving bare metal to metal ended up costing me another $300 for new rotors.
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