T27 Random Revving Up

[neilscabs]

i have a avensis that is used as a taxi its a 1.8 vmatic petrol just about once a day the car starts revving to about 3000 revs and back to normal and then it keeps doing it had it to the main dealer had it plugged in they set the pedal postion sensor and said itll be ok and took it away driving home at steady 50 ish the car started to accelerate its self now im doing 70 not touching pedals no cruise on scared the s t out of me took it back to dealer cant find anything wrong any one got any ideas whats going on getting pretty fed up with car can honestly see a wall coming to meet the car soon lol

[FROSTYBALLS]

Is the driver's car mat moving and affecting operation of the pedals??

[neilscabs]

Hi no they are factory mats and cliped in cheers

[Konrad C]

When you were told by the dealer 'that it was the throttle position sensor and you will be okay', what did they do about the sensor?

By saying the sensor is the cause, is telling me it may be faulty and that fault is intermittent and getting worse (plus dangerous).

Is your car manual or auto (CVT). If the car is manual, at least you can dip the clutch to stop the acceleration.

I would lower the cruise control speed as low as possible, in case the fault is linked to the cruise control somehow.

Get it back to the dealer and if the fault is happening more often, get a mechanic to go with you and replicate the condition to trigger the fault.

What about a OBD data logging, capturing what the car is doing whilst driving?

[neilscabs]

Thanks all they said done was reset the parimeters on throtle and found no faults the car is manual and i did dip the clutch with the revs still quite high about 2500 going back to garage on monday thanks for getting i thought someone else might have had this problem and knew what it was theres no vacumm leak on any pipes i really dont know and trying to cure it is a nightmare as it only happens now and again and u just cant replicate it as i dont do nothing it just kicks in thanks neil

[TomdeGuerre]

I don't know if the Avensis was subject to the accelerator pedal recall programme same as the Auris was.

If you have the CTS pedal fitted to yours get them to change it to the Denso pedal.. I did with my Auris.

[neilscabs]

Thanks i will check that