6 replies to this topic

[chudley]

can anyone tell me exactly what the throttle postion sensor does on a spi cooper and what problems you will have if its not working,

[2lrminivan]

i think it tells the ecu what position the throttle is at and changes the CO mixture.it might cause it to run a bit lumpy but i am not sure.
do u think yours is not working

[Surfbluegarage]

the throttle position sensor or tps should tell the ecu of the postition of the throttle... simple... but its also to do with the timing aswell i think.. cnt remember if its to do with the spi not havin a vacumn advance on the dizzy ... hhmmmm

[Ethel]

The exhaust gas sensor usually adjusts the fuel/air ratio at steady speed but as it's on the wrong side of the engine it also needs the TPS to tell it to adjust when you accelerate - the exhaust sensor wouldn't know until after you've stuffed the engine full of lots more air.

If the TPS is faulty the car would be slower and rough under acceleration

[chudley]

i think it tells the ecu what position the throttle is at and changes the CO mixture.it might cause it to run a bit lumpy but i am not sure.
do u think yours is not working

not sure it judders somtimes when acelerating

[nomininolife]

It could be a temperature sensor, giving the wrong mixture/timing




David

[chudley]

changed the lambda and coolent sensor so i will have to see what next