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R34 Tiptronic A/t Light Problem Solution!

daineisdabomb

By daineisdabomb,
in Drivetrain and transmission

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daineisdabomb

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hey guys i have a 98 R34 coupe with tiptronic auto. im having the usuall A/T light comin on n then being stuck in 3rd gear untill i switch the car off for a bit. the car has done 134,000km n has been doin it for about 4000kms off n on. i took the car to west coast automatics n had a new solenoid kit put in coz i was gettin error codes for the solenoids. they replaced shift solenoid a +b and the lock up solenoid n the line pressure solenoid as they came as a kit. 2 days later the A/T light came on and im stuck in 3rd again. this leads me to believe it either a fault with the auto ecu control unit, dodgy power supply or earth or the wiring. although it seems to b happening to alot of 98 model r34s with around the 140k mark so seems to be a wear issue or some sort. has anybony had this problem and actually pinpointed the cause and fixed the problem completely? i am going to check my earth leads and power supply leads and test the car then go from there and hopefully eliminate a few things off the list of possible causes.

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  • 4 months later...
skinner Explorer

skinner

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Hey man, same issue here. Has your problem been fixed, would like to find out before I take it in and they end up not fixing it... Cheers lol.

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  • 1 month later...
daineisdabomb Collaborator

daineisdabomb

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its been a bit of a saga so far. the throttle position sensor was earthing out when the ambiant temp was hot which was triggering a/t mode. so i replaced that and it was ok for a while but its doin it again n the throttle position sensor if fine now so it has to be something else. the tcm still comes up with an error code for the turbine sensor although i hav replaced that sensor aswell. probably gonna get nissan to find the problem. they made the car so im sure they can figure out wats wrong with it. ive checked everything i possiblily can so either the tcm is screwed or theres a wiring fault. hav u checked what fault code its coming up with?

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  • 11 years later...

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