Question about 1991 Nissan 300ZX
If I unplug the TPS and plug it in again it works once or twice and that's it. Could it be a harness issue or transmission controller gone bad?
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Posted on Jan 02, 2017
well Im sure theres a ton of miles on it-do u perform reg maint like checkin fluid level-u may need the throttle cable ajusted that hooks to trans-band n clutch could be out of measure too--trans hydra-valve system could be worn--see all these things effect the way the fluid makes the gears move--a pressure test can confirm an aging trans
Posted on Sep 19, 2009
There are 2 speed sensors on the transaxle. One is for vehicle speed and one is for trans output shaft speed. My guess is that you replaced the one for output shaft speed.
Nissan Scope Technician- 10 years with Nissan
Posted on Oct 29, 2008
SOURCE: 1990 300zx 2+2 Non Turbo
That means the transmission is going into Limp mode - something's wrong that is making the car believe it can be damaged by the speeds the upper gears will allow you to reach. For starters, check the fluid level (or just change it - it's not a bad idea), and disconnect the battery for an hour or so to put the ECU into relearn mode - this will clear current fault codes and allow you a fresh start to see if the condition reappears, or if it was a fluke failure of some part that caused the car to repeatedly go into limp mode.
Posted on Sep 30, 2008
SOURCE: Transmission slipping
My maxima uses only Matic K fluid. & I think another dealer put the wrong one druing service but no way to prove it. But it's 100% your transmission. I've been complaing since i got my maxima in 05 brand new. within 5000 miles I was complaing its transmission. Now today I have 52000miles now they admit something is wrong Luckly i was under warranty. I've been informed by former mechanics if once dealer does not find anything the 1st time they call all the local dealers & give eachother a heads up no to waste time on that specific car.I had to push the service advisor to go for a test drive to prove my car was having problem.
Good luck man
Posted on Nov 14, 2009
This car is nearing transmission failure. Get this car to a reputable shop right away for proper diagnosis; it could be anything from a plugged filter to an electrical failure. Either one can kill the transmission, but there is a chance that the transmission's proper function can be restored if looked after immediately.
Posted on Feb 13, 2010
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