NC Fairlane slight shudder under light load at 80KM/H +/- 10KM/h
Can't figure out if it's the transmission or the ignition/fuel system...
The beast is on gas, and has a number of clicks on the clock. But otherwise is a straight up and down car.
It is a NC '93 V8 Fairlane GHIA.
So, motoring along at about 80 k's the car starts to lightly shudder, as if it's hunting for overdrive... it's not a violent shudder and the taco shows a fairly steady 1600ish RPM.
Flick the switch to 'power' mode and the shudder goes away and rev adjust up to around 1900-2000 RPM.
Sometimes happens in cruise mode at around 100KM/H.
Recently serviced Auto and engine. (no tune). No change.
Starting to think it might be something with the gas tune...