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jack it up and feel for play in the wheel.also spin the wheel and listen for a noise.the bearing noise will get louder as you load it up that why it gets louder when you turn left because you are loading up the bearings on the right hand side.does the noise get worse when you brake?(putting load...
the ecu controls the fan via a relay in the engine fuse box on the n/s/f inner wing.what happens when you unplug the temp sensor on the engine? check the relays as they suffer from being corroded by water ingress.
thats correct.the computer has a defect mode where if there is an open circuit on the inj temp sensor it constantly runs the cooling fan.if you unplug the sensor and the fan kicks in you know all the wiring,relays etc are ok.the problem would then seem to be the sensor itself.
speed sensor for the injection is part of the speedo cable itself.replace the cable as a first step(they are cheap).have a look at the coolant temp sensor as well.