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MG MGB Technical - Temperature Gauge Low

Firstly, the car is a 1975 Jubilee BGT with mechanical temperature gauge.

The problem is as follows. The temperature gauge never gets above normal, and rarely reaches halfway between C and N positions. As an example today the gauge barely moved off the cold band, with an ambient of 15 deg C. Generally it varies day to day even if ambient is consistent.

Plenty of heat inside the car from new matrix. Replaced thermostat recently thinking the old one could be the problem, but the problem still persist. About to fit a new water pump; the existing one has play on the pulley shaft.

Is the temperature gauge more likely to be the culprit?

Your help would appreciated, not found similar problem in the archive.

Thanks
Steve
Stephen Lee

See Thread: fluctuating Temperature on this BBS
Steve Postins

Drop to both knees and thank your god :-)

Cec
Cec

The ususal mode of gauge failure is for them to read low before failing altogether. If you can check the temperature of the coolant with some other device e.g. a cooking thermometer (don't tell the head cook if it isn't you) you should be able to confirm it.
Paul Hunt

Thanks all

Obtained a cooking thermometer from my local supermarket. Coolant temperature measured via radiator cap is around 80 deg C. The temperature gauge in the dash has barely moved off cold. It would appear the gauge is due for retirement.

Steve
Stephen Lee

This thread was discussed between 06/05/2003 and 07/05/2003

MG MGB Technical index

This thread is from the archive. The Live MG MGB Technical BBS is active now.