DAW Posted February 14, 2011 Report Share Posted February 14, 2011 The sender with the smallest thread size that mounts to the thermostat housing itself, single terminal, what is its function and resistance test value? I'm not referring to the two-terminal, oval base CTS; nor the single terminal temp gauge sender..my '87 has a third sender/sensor which is located on the thermostat housing. The epoxy is cracked on mine and it reads zero resistance. DAW Link to comment Share on other sites More sharing options...
slowspyder Posted February 14, 2011 Report Share Posted February 14, 2011 A/c override switch Link to comment Share on other sites More sharing options...
wrngwae Posted February 14, 2011 Report Share Posted February 14, 2011 i believe,,,,it is for the a/c. it should turn it off if the motor gets too hot......if it is an auto....there is also a sending unit for the overdrive....both should be a one wire sending unit. Link to comment Share on other sites More sharing options...
DAW Posted February 14, 2011 Author Report Share Posted February 14, 2011 Thank you. That makes sense. I've long since removed my a/c compressor/plumbing and installed a simple alternator bracket for a 2.6 truck; so it's a moot point.DAW Link to comment Share on other sites More sharing options...
Indiana Posted February 14, 2011 Report Share Posted February 14, 2011 or you could leave it there and hook up a warning light that the engine has reached that point in case you don't notice it on the temp. gauge. Same for oil pressure you can use the hole in the side of the block for the n/a motors and hook a light and even a warning buzzer if oil pressure is gone down past a few psi. Link to comment Share on other sites More sharing options...
importwarrior Posted February 14, 2011 Report Share Posted February 14, 2011 (edited) hope this helps, http://i139.photobucket.com/albums/q299/I-W/Quest_Parts_and_Info/intake-sensors.gif http://i139.photobucket.com/albums/q299/I-W/Quest_Parts_and_Info/Mani-Vac-Ports.gif Edited February 14, 2011 by importwarrior Link to comment Share on other sites More sharing options...
DAW Posted February 15, 2011 Author Report Share Posted February 15, 2011 Those are great ideas. My sender is "open" at ambient temp and I assume (or I could test it in hot water up to 212 degrees F to know) that it "closes to ground" when it reaches a specific temperature. So, an idiot light or buzzer would be easy to wire up. Thanks for the vacuum diagram/photo, now I can double-check mine as I think the arrangement was messed with on my car. Link to comment Share on other sites More sharing options...
techboy Posted March 20, 2011 Report Share Posted March 20, 2011 Is this a/c switch w/ the fine threads found on both autos and manuals? Just curious b/c I see there is a difference in some of these 3 sensors between autos and manuals. Link to comment Share on other sites More sharing options...
Indiana Posted March 21, 2011 Report Share Posted March 21, 2011 The one in the stat housing is not related to the temp. gauge or which transmission you have. That one in the stat housing doesn't change until coolant reaches 238 degrees. http://www.b2600turbo.com/images/hvacspecs.jpghttp://www.b2600turbo.com/images/ECICTS.jpg Link to comment Share on other sites More sharing options...
Bottomout Posted August 27, 2011 Report Share Posted August 27, 2011 I see what all the sensors are but what plu goes where? Link to comment Share on other sites More sharing options...
Indiana Posted August 28, 2011 Report Share Posted August 28, 2011 The CTS plug has a black wire in it. The temp gauge unit has two yellow wires in it. The a/c single and the gauge IF its just a single wire and that's onyl for a couple model years that had both wires and one was a spark the wire isn't really long enough to reach up to the stat housing. Link to comment Share on other sites More sharing options...
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