Temperature gauge going mad and car won't start, HELP

[jake_111]

The clock and radio etc has all been reset when I get to the car in the morning occasionally, well last night I went to the car very late and it wouldn't start, so I bumped it and it reset everything, which I don't understand at all, so if anyone has any ideas that would be great :)

Secondly, since the car wouldn't start last night, the temperature gauge has stopped working. It stays at the bottom most of the time, but every ten minutes or so, the needle shoots up the the top and back again for a bit and the stops, I'm hoping its just a sensor or something, but if anyone knows what it could be and how to fix it I would be a happy chappy, cheers Jake

[GTuff]

The clock and radio etc has all been reset when I get to the car in the morning occasionally, well last night I went to the car very late and it wouldn't start, so I bumped it and it reset everything, which I don't understand at all, so if anyone has any ideas that would be great :)

Secondly, since the car wouldn't start last night, the temperature gauge has stopped working. It stays at the bottom most of the time, but every ten minutes or so, the needle shoots up the the top and back again for a bit and the stops, I'm hoping its just a sensor or something, but if anyone knows what it could be and how to fix it I would be a happy chappy, cheers Jake

sounds like something shorted your battery!

check the terminals are nice and tight

if they are corroded pour boiling water over the terminals clean them up

as for the over heating could be your thermostat....
take it out and put it in boiling water and you should see it mouve as it heats up if it dosent replace it....

its a gd place to start pal

[Gandi699]

that doesnt sound like overheating to me, just electrical issue

[sri_130]

When the battery struggles for amps, it seems to affect the temp gauge - I read that somewhere. Some race batteries also can have an impact.

But tbf, sounds like your battery is shagged. At a guess.

[D4NNY-801]

Agree with above, sounds like your battery is knackered although the temp gauge could be a broken earthwhich is what it normally is on the fuel gauge issues. The needle bouncing is a sign of it not getting a signal