The hand-held temp sensor units are standard automotive diagnostic tools these days. Can be acquired from a variety of automotive supply houses. John Rodgers 88 GL Driver Andrew Fox wrote: > > John's original message states: > >Radiator fan didn't appear to be coming on > >when the gauge read hot. I could place my palm on the "hot" radiator and > >hold it there comfortably. Front heater blew lukewarm air. > > Does anyone think that John's temperature gauge may be giving a false > reading? If his radiator fan is coming on when the guage gets way up there > then maybe his temp gauge is reading wrong. Maybe he has a faulty volatage > regulator. John, check the voltage at the voltage regulator, its behind > the tachometer. It should be 10.5 volts i think. Bentley shows a picture > and gives the correct volatage range. > Does anyone know the resistance values for the temperature gauge at various > levels? Right now i'm struggling with a similar problem as John but I > figured there must be something wrong with my gauge becasue when i let the > car idle for awhile the radiator fan comes on when the heat gauge is almost > up to the upper white line. > > Of course the only way to test what's really going on is to use one of > those external hose temperature sensors that nasa developed. Maybe becasue > of internal hose deterioration the coolant temp at the engine is hot but > cooler up front at the radiator. Anyone know where to get one of these > sensors, or what company makes them? > > Thanks, > Andrew Fox > 86' auto westy |
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