fwiw, if I suspect Temsor II .. which I sure would on an 84 waterboxer vanagon ( or conenctions to it ! ) I would pull out my ohm meter and measure the reistance and compare that to the chart in Bentley. that is there standard test there too I believe.. measure resistance of Temp Sensor II ..right there onthe thermostat housing , or near it .. two wire connector there. Be *real sure* it's getting a good connections. That connector gets old and can be dodgy. scott turbovans
On 3/9/2013 4:33 PM, David Beierl wrote: > At 06:40 PM 3/9/2013, john schaper wrote: >> and can't figure out what part could be bad to even replace. Not >> that I have ill will toward fellow vanagonites, but I hope someone >> else has had this problem and can make suggestions. > > I'd be really interested to know what voltage the ECU was seeing on > the Temp-II input (engine internal temp). If you check before the > day warms up after an overnight sit it ought to be very similar to > the Temp-I input (AFM air temp). If it's considerably lower the ECU > would have the false impression of a warm engine. That could be the > result of a shorted sender, but a poor connection to the internal > pull-up resistor inside the ECU would perhaps be a more likely cause. > > This could be one of those times when a trial swap of a known-good > ECU could come in very handy. > > Yours, > David > |
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