Vince12v 20 Posted October 3, 2013 Report Share Posted October 3, 2013 I fitted some 268 cams into my 2.8 vr last year, all was runnin fine until recently the car suffered Afew problems, lambda sensor died ect. But I now seem to be gettin abit of lumpiness/ hunting at idle when it's hot not cold! I vag com it and it says 00668 I think but could it be the cams causing itI haven't had it mapped yetSent from my iPhone using Tapatalk - now Free Link to post Share on other sites
VR6Pete 1,455 Posted October 6, 2013 Report Share Posted October 6, 2013 I fitted some 268 cams into my 2.8 vr last year, all was runnin fine until recently the car suffered Afew problems, lambda sensor died ect. But I now seem to be gettin abit of lumpiness/ hunting at idle when it's hot not cold! I vag com it and it says 00668 I think but could it be the cams causing itI haven't had it mapped yetSent from my iPhone using Tapatalk - now FreeI'd be very surprised if your cams were causing this, I've ran Schrick 268's in the past with no problems what so ever, even in an unmapped state. Thinks like lambda, lumpiness are not uncommon even on standard VR's... They are getting on a bit now so don't worry...Looking at the error code;00668 - Supply Voltage Terminal 30: Signal Outside Specifications 00668 - Supply Voltage Terminal 30: Implausible Signal Possible Causes Fuse(s) faulty Wiring/Connectors from/to Control Module faulty Power Supply (Battery/Generator) faulty Possible Solutions Check Fuse(s) Check/Repair Wiring/Connectors from/to Control Module Check Power Supply (Battery/Generator) Special Notes When found in an individual control module, it's most likely a local source (e.g. wiring/connectors). When found in multiple control modules at the same time, it's most likely a common source (e.g. ground spot, battery, generator). Intermittent codes are often stored during low outside temperature when the battery capacity goes down and may be ignored.Doesn't really give much away!!! But a bit of reading up on other threads seem to suggest cam position sensor or MAF. My money is on your MAF. have you managed swap one out?Club Chairman Link to post Share on other sites
Lukey. 381 Posted October 6, 2013 Report Share Posted October 6, 2013 Cleaning the hall sender is a quick free job. Link to post Share on other sites
tonygti 22 Posted October 6, 2013 Report Share Posted October 6, 2013 Did you guys notice a performance difference with these cams and are the cams really lumpy? Link to post Share on other sites
VR6Pete 1,455 Posted October 6, 2013 Report Share Posted October 6, 2013 Did you guys notice a performance difference with these cams and are the cams really lumpy?Top end is good with these and complimented my Schrick VGI very nicely, my last VR was pushing 221BHP. I've got the schimmel 263's now though, very good with my 3.68 but no VGI, still shifts!! Can't say either set of cams have felt lumpy, all very drivable Club Chairman Link to post Share on other sites
Vince12v 20 Posted October 6, 2013 Author Report Share Posted October 6, 2013 I've come to the conclusion, after abit of readin the fault had been thrown up after I disconnected my battery Link to post Share on other sites
Vince12v 20 Posted October 6, 2013 Author Report Share Posted October 6, 2013 Ahh no haven't yet found a replacement maf but after some tinkering today I'm startin to think it could be faulty tooSent from my iPhone using Tapatalk - now Free Link to post Share on other sites
Lukey. 381 Posted October 7, 2013 Report Share Posted October 7, 2013 It's the sensor that bolts through the top of the timing chain cover, also known as cam position sensor Link to post Share on other sites
VR6Pete 1,455 Posted October 7, 2013 Report Share Posted October 7, 2013 Think you need to remove your coilpack to access it, theres a guide on doing it in the club members how-to area Link to post Share on other sites
tonygti 22 Posted October 7, 2013 Report Share Posted October 7, 2013 Top end is good with these and complimented my Schrick VGI very nicely, my last VR was pushing 221BHP.I've got the schimmel 263's now though, very good with my 3.68 but no VGI, still shifts!!Can't say either set of cams have felt lumpy, all very drivable Club Chairmanthank you for the advise i rebuilding a vr6 from bottom end up block is almsoe done changed piston rings big end berings and con rod bearing now going onto the head soon and heard schrick cams were greats so looking for a set VR6Pete 1 Link to post Share on other sites
VR6Pete 1,455 Posted October 7, 2013 Report Share Posted October 7, 2013 thank you for the advise i rebuilding a vr6 from bottom end up block is almsoe done changed piston rings big end berings and con rod bearing now going onto the head soon and heard schrick cams were greats so looking for a setPics or it didn't happen Club Chairman tonygti 1 Link to post Share on other sites
tonygti 22 Posted October 8, 2013 Report Share Posted October 8, 2013 tried to uload but says file too big? Link to post Share on other sites
mattvr6 133 Posted October 8, 2013 Report Share Posted October 8, 2013 Can standard cams be reprofilld?ive bought and ecu with a stealth racing Map straight through exhaust few other bits and bobs Link to post Share on other sites
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