Hi All,
Went for a drive this evening to get some shopping from supermarket (what an exciting life i lead!)
On the way there i was coming off a slip road onto the dual carraige way. Floored the loud pedal expecting the usual satisfying surge of acceleration, and nothing! the car didnt speed up. Tried again pushing the pedal to the floor and still nothing! Occured to me after a while that the kickdown didnt seem to be working. No matter how hard i pushed the pedal at low revs the box wouldnt change down.
Got to supermarket, did shopping, started drive home. Floored it, the box changed down fine and acceleration was good again! Tried this a number of times on way home and it was fine.
So- sometimes the kickdown works, sometimes it doesnt. If its not working sometimes when i stop the engine and start it again it will work. What could the problem be? is there some sort of throttle sensor that controls kickdown that could be faulty? could it be an internal gearbox problem? is there a gearbox ECU that could be faulty. Please help?? its a 1991 LS400.