How do I stop the revs jumping around at idle after manual conversion

[shanhsv]

Hi guys,I had my car changed to a manual a while ago and since the revs jump around at idle. I bought a manual computer and loom avoid this but im sure the bloke cut wires to the computer somewhere. How can i resolve this

[bandit10]

its normally the ignition module on its way out when the tacho starts bouncing.

[shanhsv]

That was replaced after my car died last year, but yeah im told it could be the speedo in the gear box cant get`a reading to ECU hence the rev's jump around when ur sitting still.

[immortality]

yeah, you need to connect the VSS (vehicle speed sensor)

[shanhsv]

I'll check it but im pretty sure its connected

[shanhsv]

Just checking,was there any change from the VN V8 T5 gearbox and ecu to VS series 1 T5 and ecu???????????????