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September 29th, 2008

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Q & A: Temperature Gauge

Wednesday June 27th, 2007
Q & A, MGA, MGB, MGC, MG T-Type, Midget
John,

1977 B

Temp gauge does not indicate.

Solid green wire at dash end pulses the light tester.

I’ve replaced the sender with no luck.

Putting a direct ground on the green with stripe wire connected to the gauge causes the temp reading to max indication with power on.

The car runs great and isn’t overheating.



Help?!

Eric!

Test the wire at the temperature sensor -- the GREEN/BLUE wire. It should pulse after the ignition has been on for 20 seconds or so. My guess is that there is a high resistance connexion there at the end of the GREEN/BLUE w... read more