Your temp. sensor might be faulty, or the wiring for the gauge, but 9 out of 10 times this indicates air in the cooling system. Check the overflow tank. When there is HOT coolant on the sensor, it pops up. When air hits the sensor, it dives down.
goes down
goes down
It probably means the bulb burned out and needs to be replaced.
Answernothing it is normal oil psi. go"s up & down with RPMthe pressure relief valve is probably stuck have it checked or you could blow all the seals
When you skip a letter it goes down
Do you mean if you hold F5 will it continuously work? if so then yes
first thing is to work out which part is at fault? I would start with dash gauge, find wire at fuel tank which goes to gauge, earth this wire out to body while having friend watch fuel gauge, if it goes straight to full it mean dash gauge is good but sender unit in fuel tank is probably at fault. Go to car wreckers for s/h part.
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my oil pressure goes up while I'm driving and back down when I stop what could cause that
Hatchback
Is the button that makes the window goes up and down, it is auto, i mean just one click ant it goes complete up or down.
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