The engine heating gauge on my 03 reg 1.6 Vauxhall Astra has stopped working. The garage has looked at it and said that it is not the sender or the thermostat. It could be the Electronic Control Unit but it is probably the gauge itself and have quoted about 拢200+ to be repaired. Are there any test/s that my husband can do to determine just what is wrong?|||Hi there the answer is yes you can test it out.
if as they say the sender unit is ok then the easiest thing is to take out the dash to get to gauges.locate the wire going to the sender unit and check colours you will find corresponding colour at connector block going into dash unit. put a wire from the wire that goes into dash which corresponds with same colour at sender unit. switch on ignition and put fre end of wire to a good earth point gently if gauge is ok then by doing this the gauge will rise. if you find that the gauge is faulty then as you have gone this far buy a second hand dash unit. and fit to car but make sure you get same type od unit. if gauge works then take wire off sender unit and again put a wire from it to an earth point and watch gauge if gauge rises then it is sender unit at fault. try this first anyway just to discount sender unit at first. Jock
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