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Lotus Elite Temp!

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I have an elite 2.2 with a strange temperature problem. If i leave heater off the temp stays normal, if i switch the blower on it reads hotter. Any help would be appreciated, i have changed thermostat, otter switch new water pump etc etc. doesn't lose water or boil up.

Thanks in advance.

Edited by Roger Moore

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Hi, as a long shot, the temperature gauge is electric, when you switch on the fans it could be affecting the voltage supply to the sender causing the resistance in the sender to change thus causing the gauge to read high. From memory the sender v+ supply goes from a voltage stabilizer at the back of the gauges through the temp gauge to the sender on the thermostat housing and then to earth. Has this supply been connected to a non stabalised supply?

Regards Dan

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