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Re: O/T: '92 Caravan charge temperature sensor
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Posted by Bob on December 19, 2006 at 18:26:33 from (69.178.229.154):
In Reply to: O/T: '92 Caravan charge temperature sensor posted by MeAnthony on December 19, 2006 at 17:47:54:
Some engine 'puter systems look at coolant temp only, or BOTH intake air temp, AND coolant temp. It all depends upon how the van was originally set up. The readings of the temp sensor(s), in effect, tell the puter how much "choke" to use, in this case, to add to the injector pulse duty cycle. WHERE is the sensor.... intake manifold of the donor engine, or in the intake air ducting that has been with the van all along? If the sensor is in the donor engine, and the original engine did NOT have one there, there obviously won't be a pigtail/connector in the van's harness for it, nor will the van's as-original 'puter be looking for it. Of course, also the original engine could have the sensor at a different location. If you have access to a good scan tool, you can probably get a readout on what the 'puter thinks the coolant temperature is, as well as seeing if it is looking at the charge air temperature, and what it is seeing for a temperature there, to see if it makes sense.
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