My 93 VR6 drives perfect for the first 15-25 min of a trip once it is warmed up real well the rpms jump it gets power surges and hesitates. If I come to a stop the idle seems stuck at 1100ish if I hit the gas it will sputter and just about die unless i floor it then it catches.
I have replaced ALL 3mm i,d. vacc lines and I replaced the line that goes from the TB to under the airbox area. I cannot find anymore vaccum leaks...
During this time when it begins to act up it is running pretty rich, (carbon gas smell from exhaust)
02 sensor?
Blue coolant temp?
vaccum leak I am missing?
TIA
Steve