SiR_RB Posted May 11, 2018 Share Posted May 11, 2018 (edited) Hi fellas My cars been off the road for about 4/5weeks as I broke my gearbox selector so gearbox was getting refreshed while I was waiting for it to come back I looked into removing and replacing the nitrogen canister, while I was unscrewing it I noticed it unscrewed in half ! I never knew they were a 2 piece item, anyways the other bit that screws into the attesa pump assembly was super tight so I put it back together now that the box is back in I went to bleed the attesa system with fresh Nissan matic d, and I can’t get the pump to prime ! ive disconnected the white plug in drivers kick panel, cracked the bleed nipple on both the pump and near transfer case and it basically just dribbles out without the pump working no error codes on attesa ecu I started the car and jumped under and cracked the nipple still no luck fuses are good i by passed the attesa relay in the boot and the pump worked fine for 10 seconds but then started making a different high pitched squeel while the pump was going I jumped under and still nothing from bleed nipples can anyone shed some light on what I can do next did me separating the nitrogen canister cause this issue as it was working fine before it came off the road ? i got a known working attesa ecu and relay from a mates Gtr I will try tomorow and report back any help would be much appreciated !! Edited May 11, 2018 by SiR_RB Link to comment https://www.sau.com.au/forums/topic/473997-r32-gtr-attesa-4wd-randomly-doesn%E2%80%99t-want-to-work-now/ Share on other sites More sharing options...
SiR_RB Posted May 12, 2018 Author Share Posted May 12, 2018 Tried a mates known working attesa ecu and relay still nothing Link to comment https://www.sau.com.au/forums/topic/473997-r32-gtr-attesa-4wd-randomly-doesn%E2%80%99t-want-to-work-now/#findComment-7875378 Share on other sites More sharing options...
SiR_RB Posted May 16, 2018 Author Share Posted May 16, 2018 So I found the issue my pressure sensor next to nitrogen canister had a cut wire, that’s why the attesa ecu wouldn’t turn the pump on as it thiught it had max line pressure all fixed now and also installed a new nitrogen canister, and full bleed with Nissan matic d all I can say is 4wd has never worked so well before !! 2 1 Link to comment https://www.sau.com.au/forums/topic/473997-r32-gtr-attesa-4wd-randomly-doesn%E2%80%99t-want-to-work-now/#findComment-7875729 Share on other sites More sharing options...
Sinista32 Posted May 17, 2018 Share Posted May 17, 2018 good find and fix - enjoy Link to comment https://www.sau.com.au/forums/topic/473997-r32-gtr-attesa-4wd-randomly-doesn%E2%80%99t-want-to-work-now/#findComment-7875770 Share on other sites More sharing options...
SiR_RB Posted May 17, 2018 Author Share Posted May 17, 2018 Thanks Link to comment https://www.sau.com.au/forums/topic/473997-r32-gtr-attesa-4wd-randomly-doesn%E2%80%99t-want-to-work-now/#findComment-7875784 Share on other sites More sharing options...
Gareth Posted May 22, 2018 Share Posted May 22, 2018 Out of curiosity how did you get the other part of the canister off the car? I also had the unscrewing in half problem (although i realised before I completely unscrewed it) which i thought would be pretty dangerous if the canister actually had pressure in it, why wouldn't you make it a left hand thread if it had to be 2 piece, anyway I machined up a giant socket to remove the whole thing as one piece Link to comment https://www.sau.com.au/forums/topic/473997-r32-gtr-attesa-4wd-randomly-doesn%E2%80%99t-want-to-work-now/#findComment-7876197 Share on other sites More sharing options...
SiR_RB Posted June 10, 2018 Author Share Posted June 10, 2018 I borrowed the proper size socket for it from a mate and it came off easy off the top of my head it was a 3” socket Link to comment https://www.sau.com.au/forums/topic/473997-r32-gtr-attesa-4wd-randomly-doesn%E2%80%99t-want-to-work-now/#findComment-7877889 Share on other sites More sharing options...
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