does anyone know why my autobox would have power and hold lights on at the same time? if put in power mode it is just power light that comes on in normal mode no lights, and in hold both lights come on. when i start the car the power light sometimes flashes for 30 secs or so and at the moment it seems like it doesnt want to change up gears, when it finally does it gives you a big kick in the back very jerky, any advice would be much appreciated thanks guys and girls.:headvswal

Check the diagnostics and it'll tell you what the problem is

http://300zx.co.uk/forums/showthread.php?t=74104&highlight=automatic+diagnostics

so and at the moment it seems like it doesnt want to change up gears, when it finally does it gives you a big kick in the back very jerky, any advice would be much appreciated thanks guys and girls.:headvswal

 

does it do this still while in normal a/t mode (middle selection)?

yes ck300z it does still do that in a/t mode but in power and giving it some it changes fine at high revs, it is just when driving slow/normally cheers

well im no mechanic but mine is a 91 auto n/a

So all i can say is mine works like this-

 

 

normal from start all lights off, (with eng running)

 

set in a/t mode as normal -

(this changes to power mode automaticly when reasonable acceleration applied and goes back to normal a/t upon de-acceleration)

 

power mode -

(prolong's gear ratio's slightl'y)

 

hold -

(holds in selected gear)

 

just little extra feature's really but handy in certain situations;)

 

i leave mine set in a/t mode prett'y much all the time as per maual and it change's smoothly in each gear ,the manual also state's overdrive mode should be off unless going up or down steep hills etc as it merel'y provides engine braking

 

have u checked the fluid ? for colour or for metal shavings etc

there's a usefull post on gear box issues somwhere ill see if i can find it for u

 

hth:D chris

Edited October 24, 200817 yr by ck300z

this is the post i was thinkin off mentione's about probs changing to higher gears i noticed u say its fine under normal driving though? may be still of some help

 

but as per the link check colour of fluid etc but does sound like it's in need of some attention or poss on it's way out?

 

http://www.300zx.co.uk/forums/showthread.php?t=117582&highlight=autobox

 

hth

hi all i have done the diagnostic test on my box, it was the thid light that flashed lnger which means throttle sensor circuit is shorted or disconnected, does anyone have a clue how to fix it?im no mechanic please bear in mind when replying cheers all