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Old May 11, 2007 | 06:21 PM
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RaulLopez
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Heat Gauge
I notice after my radiator was changed that the heat guage moves with some frequency. It moves up in temp when i speed up and moves down when I slow. I was told this could be due to a bad head gasket and told to watch for dropping levels of coolant and to also watch for white smoke at start up. I have noticed neither. Could there be a different reason for this?
 
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Old May 11, 2007 | 07:38 PM
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Over active ICVR (instrument cluster voltage regulator)

remove the connector to the Temp sending unit and attach a test light or analog Multimeter to observe ther frequency of the electrical pulse.
Then Get back here with the result
 
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Old May 11, 2007 | 07:55 PM
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If the ICVR is bad the fuel gage will do the same rise and fall. Is the fuel gage doing the same thing?

When the radiator was installed were there a number of fiber flaps around the radiator removed?

Is the radiator fan shroud in place?

What kind of fan is used?
 
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Old May 11, 2007 | 07:57 PM
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no the fuel gauge isn't doing that. I dunno about all the radiator stuff i'll have to check.
 
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Old May 11, 2007 | 08:00 PM
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If the fuel gage is not moving the same way the ICVR is OK.
 
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Old May 11, 2007 | 08:22 PM
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Then is will be a faulty or very sensitive sending unit.
 
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Old May 11, 2007 | 08:27 PM
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and that is attached to the radiator correct?
 
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Old May 11, 2007 | 10:21 PM
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The sending unit is near the thermostat. Check your service manual for the precise location.
 
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Old May 11, 2007 | 10:22 PM
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the 700 sensor is bad
 
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