Originally Posted by
fraser9764
As above, and check your phase and crank sensors if the rev counter is jumping around.
I can't remember which one drives the rev counter off hand.
check the gaps and the wiring. Its not unheard of for the pins to come loose in the plugs and get pushed back when you plug it in
Neither do, the rev counter is from the coil.
The TPS is open circuit at idle, the ECU uses this signal for the idle and overrun strategies, now you have tampered with it, this may not be the case anymore! Also as said if it's a 4x4 loom you need to invert the outer TPS wires.
Martin