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Old 02-20-2013, 12:25 PM   #1
Pave21
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Default Car dying on me??

(CEL) came on and it was for the gas cap not being screwed on tight enought so i went to clear the code by diconneting the negative terminal of the battery for 15 minutes and when i put it back on and let the car warm up i would start to drive but when i would come to a stop the car would just die... Do anyone have any clue why??

2006 wrx tuned by camtuning in new mexico
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Old 02-20-2013, 12:29 PM   #2
Gallo2011
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You went through all that instead of making sure the gas cap was tight?
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Old 02-20-2013, 12:31 PM   #3
Pave21
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No i did just tighten the cap but the code wouldnt not go away. so i just did that. but either way that still doesnt explain why any time i diconnect the battery my just shuts off when i drive it.
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Old 02-20-2013, 12:34 PM   #4
Mr Wrex
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Any smells?

Last edited by Mr Wrex; 02-20-2013 at 01:02 PM. Reason: huehuehue
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Old 02-20-2013, 12:34 PM   #5
HinshawWRX
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The code doesn't go away right away. And this "fix" doesn't seem to have verified it was indeed the cap making the issue since now the car is dying.
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Old 02-20-2013, 12:35 PM   #6
Pave21
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no. no smells what so ever. i would let it warm up for like 10 minutes and just idle before i take it out. and as soon as i would come to a stop and step on the clutch and brake it would just shut off.
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Old 02-20-2013, 12:37 PM   #7
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Ok, slow down a bit, you're not making sense. The gas cap is tight, you've confirmed that. The battery cables have been reconnected and are tight on the terminals. You start the car and it starts fine. You drive it, come to a stop, and it dies.

How was the car tuned? Cobb AP? Open Source? Do you have a copy of the tune you can flash to the ECU and then try driving the car again? It's possible you erased the tune and now your ECU is not happy when you drive the car.
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Old 02-20-2013, 12:38 PM   #8
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It only does it like two times. So ill just start it back up and seat there for another 5 minutes and it wouldnt do it again.
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Old 02-20-2013, 12:39 PM   #9
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Doesn't do what again? Die when you drive it? So the problem is fixed?
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Old 02-20-2013, 12:39 PM   #10
Pave21
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Its tuned by camtunning and im probably thinking the tuned did get erased so ill probably give him a call and see if there is any problems.
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Old 02-20-2013, 12:40 PM   #11
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ya it will only die like two times. then i just seat there and it seems to go away.
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Old 02-20-2013, 12:41 PM   #12
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Get the tune back on it and go from there. Let us know the result.
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Old 02-20-2013, 12:43 PM   #13
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Will do thanks for the help. I should hopefully find out by the end of the day
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Old 02-20-2013, 12:45 PM   #14
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Disconnecting the battery will NOT "erase" a tune.
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Old 02-20-2013, 12:49 PM   #15
cvananden
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I can't imagine that an ecu would lose a tune from having a disconnected battery. That would be no different than having a dead battery.

I think there is some other issue, but the grammar used is so poor we can't expect much details...
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Old 02-20-2013, 12:52 PM   #16
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Quote:
Originally Posted by Pave21 View Post
(CEL) came on and it was for the gas cap not being screwed on tight enought so i went to clear the code by diconneting the negative terminal of the battery for 15 minutes and when i put it back on and let the car warm up i would start to drive but when i would come to a stop the car would just die... Do anyone have any clue why??

2006 wrx tuned by camtuning in new mexico
It sounds like you didn't do the idle reset procedure after you disconnected the battery. When the ECU is reset it loses its idle parameters, and unless you let it relearn your idle will be off and you can easily stall out coming to stops. To do it:
- Disconnect your battery again to reset the ECU.
- Reconnect your battery.
- Make sure all accessories (AC, stereo, lights, etc.) are off.
- Turn the key to "On" and wait a couple seconds.
- Turn key back to "Off".
- Start car without touching the gas pedal.
- Let the car just sit and idle for 15 minutes without touching the gas.
- Turn off the car.

Once your done take it for a drive to see if the problem is fixed. I have to do this every time I disconnect my battery. If you don't do the idle reset the car will eventually relearn idle anyway, but it can take a couple hundred miles.

Last edited by zoltan; 02-20-2013 at 01:14 PM.
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Old 02-20-2013, 01:09 PM   #17
Gallo2011
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There ya go. I stand corrected.
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Old 02-22-2013, 10:40 AM   #18
zoltan
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Quote:
Originally Posted by Pave21 View Post
(CEL) came on and it was for the gas cap not being screwed on tight enought so i went to clear the code by diconneting the negative terminal of the battery for 15 minutes and when i put it back on and let the car warm up i would start to drive but when i would come to a stop the car would just die... Do anyone have any clue why??

2006 wrx tuned by camtuning in new mexico
Update?
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Old 02-22-2013, 03:03 PM   #19
constantinus
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Quote:
Originally Posted by zoltan View Post
It sounds like you didn't do the idle reset procedure after you disconnected the battery. When the ECU is reset it loses its idle parameters, and unless you let it relearn your idle will be off and you can easily stall out coming to stops. To do it:
- Disconnect your battery again to reset the ECU.
- Reconnect your battery.
- Make sure all accessories (AC, stereo, lights, etc.) are off.
- Turn the key to "On" and wait a couple seconds.
- Turn key back to "Off".
- Start car without touching the gas pedal.
- Let the car just sit and idle for 15 minutes without touching the gas.
- Turn off the car.

Once your done take it for a drive to see if the problem is fixed. I have to do this every time I disconnect my battery. If you don't do the idle reset the car will eventually relearn idle anyway, but it can take a couple hundred miles.
I was going to suggest this exactly. The car needs to relearn idle parameters. Start it up and let it idle until the fans come on, which should be 15-20 mins.
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Old 02-22-2013, 06:45 PM   #20
Mr Wrex
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Default

Quote:
Originally Posted by zoltan View Post
It sounds like you didn't do the idle reset procedure after you disconnected the battery. When the ECU is reset it loses its idle parameters, and unless you let it relearn your idle will be off and you can easily stall out coming to stops. To do it:
- Disconnect your battery again to reset the ECU.
- Reconnect your battery.
- Make sure all accessories (AC, stereo, lights, etc.) are off.
- Turn the key to "On" and wait a couple seconds.
- Turn key back to "Off".
- Start car without touching the gas pedal.
- Let the car just sit and idle for 15 minutes without touching the gas.
- Turn off the car.

Once your done take it for a drive to see if the problem is fixed. I have to do this every time I disconnect my battery. If you don't do the idle reset the car will eventually relearn idle anyway, but it can take a couple hundred miles.
I has a question bout this... should this be done after warming up the car or does it not matter? I'm assuming it wouldn't matter since the car should be fully warmed up within that 15 minute interval. Also, would this cause the car to come close to stalling when slowing to a stop? My car has been doing this lately when in gear and pushing in the clutch before stopping. It doesn't behave like this when slowing down in neutral and I don't want to rip things apart if I don't have to. Sorry for going slightly OT, but it's pissing me off
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Old 02-22-2013, 09:04 PM   #21
zoltan
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Quote:
Originally Posted by Mr Wrex View Post
I has a question bout this... should this be done after warming up the car or does it not matter? I'm assuming it wouldn't matter since the car should be fully warmed up within that 15 minute interval.
The car should fully warm up in those 15 minutes.


Quote:
Originally Posted by Mr Wrex View Post
Also, would this cause the car to come close to stalling when slowing to a stop? My car has been doing this lately when in gear and pushing in the clutch before stopping.
That's exactly what my car does if I don't reset the idle.
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Old 02-22-2013, 09:25 PM   #22
Pave21
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I did get the car to stop dying when coming to stop by doing that process. but the CLE came back on and i think i have a vaccum leak on the evap cylinder. So im going to take it to the shop and have my buddy check it out on monday. but in the mean time im going to buy a new gas cap and see if maybe that is the problem. But by tomorrow ill have the code and check out what i can do.
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Old 02-22-2013, 11:01 PM   #23
08_sti
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Quote:
Originally Posted by HinshawWRX View Post
Disconnecting the battery will NOT "erase" a tune.
If he was using a realtime flash and not actually reflashing the ecu and saving the stock map then yes he could of reset the ecu and lost his tune, either way idle parameters would be lost and it would need to re-learn

Correct me if im wrong
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Old 02-23-2013, 08:30 AM   #24
Pave21
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Cam did flash the ecu with the new map so it will not be lost when ever I restart the ecu. Now I'm just trying to get rid of this CEL.

Last edited by Pave21; 02-23-2013 at 08:36 AM.
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