LILFOOT
Member
09 STA 4.6 AWD
Lately i have felt a weird humming sound, almost as if my driveshaft or rear-end is starting to go.
It only happens in 6th gear, at about 60mph, with very light throttle (cruising, just to maintain speed).
When i look at the data in Torque/OBDLink, i notice that my Absolute Throttle Position is at 18% with no input and maxes out at 76% with pedal floored.
At 60mph at less than 1/4 throttle it is just above 50%.
When this 'noise' happens the Absolute Throttle Position spikes to 76%, even though i havent moved the pedal any.
RPMs do not change, so i dont believe the trans is slipping.
Trans fluid is full, even though bulkhead connector is leaking pretty good.
Wondering if anyone else has noticed anything similar ?
Or where i should start looking ?
Throttle Pedal ?
Throttle Body ?
I tried this with the stock tune and both of the tunes from Torrie, with no difference.
So, i am pretty sure it is not tune related.
I have also done the Pedal calibration multiple times and see no difference in range or position.
Lately i have felt a weird humming sound, almost as if my driveshaft or rear-end is starting to go.
It only happens in 6th gear, at about 60mph, with very light throttle (cruising, just to maintain speed).
When i look at the data in Torque/OBDLink, i notice that my Absolute Throttle Position is at 18% with no input and maxes out at 76% with pedal floored.
At 60mph at less than 1/4 throttle it is just above 50%.
When this 'noise' happens the Absolute Throttle Position spikes to 76%, even though i havent moved the pedal any.
RPMs do not change, so i dont believe the trans is slipping.
Trans fluid is full, even though bulkhead connector is leaking pretty good.
Wondering if anyone else has noticed anything similar ?
Or where i should start looking ?
Throttle Pedal ?
Throttle Body ?
I tried this with the stock tune and both of the tunes from Torrie, with no difference.
So, i am pretty sure it is not tune related.
I have also done the Pedal calibration multiple times and see no difference in range or position.