Hi,
My Laguna temperature guage has recently given me many sleepless nights worrying about blown gaskets and warped heads.
I've just concluded that my temp guages sits normally when there is nothing drawing power from the electrical system, but as soon as I switch on the HRW or heater fan , the guage climbs past the 3/4 up to the max. When I switch everthing off, in a matter of seconds it falls back down again.
Could it be the temperature sender unit failed, or is it some kind of voltage regular busted.
Pls advise