Lots of interference on VTPS when engine is running.
 

As the title says, Ive got a brand new VTPS, all wiring is confirmed good on the car and inside the MS2, and when the car is running th etps signal jumps around and basically just doesnt do what its told. however with the engine off it seems fine.

What products can i use to shield the tps wires, and I imagine the COPS wiring?

Thanks,
Dann

First question: How is your TPS grounded?

It's just a stock 1.6 loom with a new vtps wired into it.


Should I move the earth somewhere different? it's earthen to one of the earth's in the ecu as stock.

What pin on the ECU loom is it wired to?