This car Starts pefectly, But Will not rev, ( Doesn't make the slightest attempt to lift the revs, You wouldn't know that you had put your foot on the throttle )
You can sit there for up to 5 minutes playing with the throttle and nothing happens. ??
Then suddenly it just Revs up, Usually its Straight there and revs Perfectly and Other times it struggles for a while and smokes a bit. ??
Live Data for CTS and TPS etc look ok, Pedal checks out ok on both tracks, No Fault codes logged. ??
AFM has been suggested but Its the same plugged in or disconnected. ? And I would have thought if it was the AFM it would at least try to rev. ??
Nothing looks Easy to get to, Air Supply seems to go into the top of the Rocker cover, No throttle flaps can be seen. EGR valve is Vac operated and we have Actuated it, But that just makes it smoke more so that appears to be working. ??