Won't shift out of first gear

Anonymous,

It sounds like you have a bad speed sensor on your 300ZX as these sensors provide input to the ECU on when to shift your transmission.....Figure out where it is and replace it and your problems may go away.

speed sensor / speedometer drops too zero - Car Forums and ...

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Because the speed sensor isn't working the speedometer isn't working either. ...thinks you are stopped or going very slow and won't shift it out of first gear.

Won't Shift Out of First - BIONICDODGE.COM

www.bionicdodge.com/bionic/index.php?topic=1645.0;wap2

A friend of mine has a Durango, the tranny wont shift out of 1st. ... Tip: If its a speed sensor problem, you may find that the speedo isn't working very well. ... To check and see if 2nd gear is messed up mechanically, manually hold it in low 1, ...

21298304 Tack and speedometer quit working, won't shift ...

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My van won't shift into overdrive, speedometer isn't working, door locks are not ...My speedometer quit workin and my gears are a lil hard shiftin and i have no ...

Speedometer Odometer trans shift issue - Ford Truck Enthusiasts Forums

www.ford-trucks.com > ... > Misc. > Electrical Systems/Wiring

GOOD discriptoin but its tough to say .
Your not getting codes sometimes you don't if its not that big of a problem YET.
But it sounds like you may be heading for one.
May best guess is their is an internal valve that isn't working correctly or mabey a clogged filter .But it sounds like it can be fixed with out to much expence if you do it now
Take it to a transmission shop before its to late

CLuster speedo and odometer
both dead?
cable. or drive gears in tranny tripped.
easy to check. ?
sure.
at tranny cable free, spin it same direction as speedo needle.
speedo dont work (both odometer and speed) then the cable is bad.
if not work, tranny drive gears to cable stripped out. some are plastic

try a new speedo drive sennsor on the gearbox

Most modern day autos are all electronically controlled, Usually if it detects a fault it can go into limp mode which by default is 3rd gear. The fact your speedo is not working which too is most likely sensor driven then that may be a clue to what is wrong. No speed sensor, no speedo and the transmission control unit is not getting the vehicle speed sense either. So it has no way of knowing what gear to be in or any shift points. I'm thinking it's a sensor issue would be my best guess.

It won't be a cable, as it's impossible for a cable driven speedo to perform this way.
It's an electronic speedo.

Check and/or replace the speedo sensor in the gearbox housing.

Im having trouble as well with shifting higher than second gear and me speedo doesn't work.checked all fuses replaced vss (both) and still no speedo or shifting. any ides would be great. I have power at buffer and tranny

I have gmc jimmy speedomter wront work abs light comes on will not shift we Chang the vss still disentangle help

THE SPEEDO PLAYS A BIG PART IN HOW YOUR TRANSMISSON SHIFTS GEARS FIX SPEEDO FIRST AND THE TRANS WILL SHIFT PROPLEY AGAIN CHECK FUSES