Our maxima developed an engine problem some months ago . On start up the engine revs to approximately 1500 rpm from cold. As standard with this model , but the fault happens when the engine full temp is reached around 90 deg. Then it goes into a up and down revving mode , 800 to 1500 revs continuously. Revving the engine higher will not ease the revving once the accelerator is released. The knock sensor went open circuit , it was changed out, these engines require a maxim amount of patience . So the ECU shows no faults , but the revving continues.
I desperately need some help from a Maxima expert. Any realistic help would possible steer me in the wright direction.
We love the car , great to drive had it since 2003 , looks like new. But this fault I need to rectify.
