Can anyone help when i turn my 660x on and start engine after a couple of seconds the temperature light comes on and an error message err-4 can anyone help and tell me what this is and how to fix it thanks

I think this thread has it but do read it carefully as I have not http://www.xt660.com/showthread.php?t=53

Any idea what a ecu link error could be

A broken wire, dodgy corroded connector, bad earth etc.

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Well at least that gives me an idea as to what the err-4 ecu link falt could be thanks for your help any help is appreciated

It says on this error my bike shouldn't start but it does and runs fine. Any ideas

Not too sure why your bike starts with a code 4, could be a stored fault code? Not too familiar with the R/X diagnostic display. Sorry.

However! If it were me; I'd start with the temperature light coming on prematurely and when the engine is cold. Check the sensor connector is firmly clicked home and all the wiring for shorting to earth, physical breaks and points of high resistance (trapped wires, worn through insulation, corroded connectors, melting connectors). Also check the multiplug at the ECU end. The temperature sensor wires are blue/black and green/red.

Water damaged/corroded connectors and wiring rubbing through are well documented faults on R/X (and Z), particularly where they eye doesn’t see, like under the tank. Get your tank off and have a good butchers at the wiring before you try anything that’s going to cost you money!

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