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https://www.autonerdz.com/cgi/yabb2/YaBB.pl General Public Area >> For Non-Technicians >> renault scenic 2002 issues https://www.autonerdz.com/cgi/yabb2/YaBB.pl?num=1428610594 Message started by bangshout on Apr 9^th, 2015 at 1:16pm

Title: renault scenic 2002 issues
Post by bangshout on Apr 9^th, 2015 at 1:16pm

I have a few on going issues with my sisters renault scenic over fuel trims and monitors,High short term fuel trims positive and non continuous monitors not complete for catalyst and oxygen sensor
Im presuming these non complete monitors are linked to my replacing both the o2 sensors,could it explain the crazy fuel trim figures?

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Title: Re: renault scenic 2002 issues
Post by Abndanger on Apr 9^th, 2015 at 4:48pm

Bang, try to do a KAM reset or disconnect the battery and touch the leads together and see if it will force the fuel trims to relearn. Make sure you drive it and do some partial & WOT shots :)

Title: Re: renault scenic 2002 issues
Post by bangshout on Apr 11^th, 2015 at 11:36am

Abndanger wrote on Apr 9^th, 2015 at 4:48pm:

Bang, try to do a KAM reset or disconnect the battery and touch the leads together and see if it will force the fuel trims to relearn. Make sure you drive it and do some partial & WOT shots :)

Cheers for that Ive carried out the reset with the battery disconnected and the engine does seem to be running a lot better,not checked the fuel trims after that as of yet but Ill get somebody to drive it while I do.
The other point I failed to mention is their are trouble codes logged but there is no engine management light illuminated and no freeze frame data for the codes.The codes are po136 and po5o5.

Title: Re: renault scenic 2002 issues
Post by StitchB on Apr 16^th, 2015 at 5:13am

Abndanger wrote on Apr 9^th, 2015 at 4:48pm:

Bang, try to do a KAM reset or disconnect the battery and touch the leads together and see if it will force the fuel trims to relearn. Make sure you drive it and do some partial & WOT shots

Abandondanger,

find this interesting, always good to read as I know on VW and missed by a lot of very good Techs is the Throttle body relearn. I have fixed cars that have been to multiple shops over several years and the owner is @ their witts end. Techs I feel the are far superior to me in the vain of work history but don't know about this and how critical it is on VW in particular.

StitchB