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S40 / V40 '96-'04 General Forum for the Volvo S40 and V40 (Classic) Series from 1995-2004. |
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resetting ECUViews : 48583 Replies : 21Users Viewing This Thread : |
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Aug 30th, 2012, 15:11 | #11 |
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Location: Berkhamsted
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Is yours an auto?
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Aug 31st, 2012, 06:08 | #12 |
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Last Online: Sep 10th, 2015 12:35
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Location: Coventry
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Would this disconnecting the battery work on erasing the long term fuel trims?
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Aug 31st, 2012, 09:55 | #13 |
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Last Online: Dec 28th, 2022 12:25
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Disconnect the battery by all means and reset the ECU but it will only drive ok if your lucky for about 10 miles then the problems will be back.
Just best to attack the problem for good. Everytime the ECU is reset it has to get used to the way you drive again, so therefore you won`t get the best from the engine as it doesn`t know how you drive!
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Apr 9th, 2013, 22:28 | #14 |
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Location: Tunbridge Wells
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Hi Bongo - appreciate this was a posting from a longtime ago bu this is exactly the issue I have - erratic idle and stalling following a dead battery having been away on hols for a week. Do I need to do anything other than get some mile on the clock for it to re-learn its values?
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Apr 9th, 2013, 22:43 | #15 |
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Last Online: Today 18:01
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Location: North Yorkshire
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960KG is right it doesn't reset anything for good.
srs airbag light can only be reset by a dealer, for safety reasons, clan a member on here knows alot about these sorts of things,
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Previous -03 S40, 04 V70 D5, 04 V70 D5 Sport, 05 V50, 07 S60 D5, 09 V70 D5 R design, 12 XC60 DrivE, 15 V60 D3 Current- 05 XC90 D5 Exec, 12 XC70 D4 AWD Se Lux, 14 S80 D3 Se Lux |
Oct 28th, 2014, 08:00 | #16 |
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Last Online: Apr 12th, 2016 08:09
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Location: Port Elizabeth
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I disconnected the battery on the car on Saturday, and left it off for around 20 minutes. Afterwards i left the terminals together for about 5.
Reconnected everything and took the car for a drive. First 10 minutes was weird. Shifting was very hard in the autobox, but once it learned how the driving style is, everything was fine again. Must admit, i think shifting is now allot smoother, 3 days later. Car feels better. I think the ECU does get itself into a bit of a twist every now and then. |
Dec 9th, 2014, 20:55 | #17 |
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Last Online: Apr 6th, 2015 11:41
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Location: Lisbon
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Tomorrow will try this. As for all I've been testing the engine light doesn't turn off.
I know the problem is from vacuo leek and a bad LPG system |
Oct 12th, 2016, 21:07 | #18 |
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Last Online: Nov 17th, 2019 15:18
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Location: Nottingham
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Hi just had a turbo pipe replaced that was split on v50 2.0d and car seems to drive kinda normal for a bit then goes into limp mode it does rev above 3000rpm buy nothing there any body shed a bit of light on it
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Oct 12th, 2016, 22:10 | #19 |
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You are in the wrong forum mate. Post in the S40/V50 forum and you should get an intelligent reply.
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2001 V40 2.0lt Sport lux - Daily Driver. 174k miles. 2003 C70 2.4 GT Convertible - Garage Queen. 65k miles. http://www.neptuno6benagil.com |
Jul 2nd, 2017, 15:13 | #20 |
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Last Online: Today 06:46
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Location: London
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So does this way of resetting the ecu work? I am thinking about doing it as i am fitting a bit bigger turbo and 440cc injectors instead of the old 312.
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