Was told that TPS was dodgy was causing the idling, gearshift problems & tight steering when backing out driveway. So I had to buy tps through Nissan and after a week it turned up. Fitted last thursday, took car for a drive and was no better. Yesterday I checked tps volts via Apexi AVCR, new verses old and there was no real difference??!! New read 1.13v closed & 3.98v open. Old read closed 1.3v & 3.95v open. Does anybody have any tips so car doesn't have to go mechanic on tuesday?