rickyellow zee Posted July 31, 2012 Share Posted July 31, 2012 I have a 78 280z With an 83 L28ET swap for starters. I noticed that on the wiring harness just before the CHTS their is a resistor on one of the wires. Should there be a resistor in line with the CHTS? Ill post pics soon. Thanks Rick Quote Link to comment Share on other sites More sharing options...
rickyellow zee Posted July 31, 2012 Author Share Posted July 31, 2012 Heres a pic. Is this normal for the L28ET turbo? Quote Link to comment Share on other sites More sharing options...
z240 Posted July 31, 2012 Share Posted July 31, 2012 no way. PO modification to tweak the mix to his liking. Quote Link to comment Share on other sites More sharing options...
cgsheen Posted July 31, 2012 Share Posted July 31, 2012 Not in a stock configuration. Have you pulled and tested the CHTS like it says in the troubleshooting steps in the FSM? It'll tell you if the CHTS is working correctly. (maybe the PO was "adjusting" the output???) Either way, if it were mine, I'd wire it back to normal and if the CHTS is off, I'd replace it - the ECCS needs to know the engine temp... Quote Link to comment Share on other sites More sharing options...
rickyellow zee Posted July 31, 2012 Author Share Posted July 31, 2012 This is probably why the cars running like ****. Im gonna wire it up normally and check the sensor. Thanks. Quote Link to comment Share on other sites More sharing options...
Eric2015 Posted March 13, 2015 Share Posted March 13, 2015 Sorry to revive an old thread but I have a question. Does the CHTS measure coolant temp? I figured it should but I pulled mine and no coolant came out? So does it just measure air temp in the head? Or should there be coolant there? Also, on the thermostat housing there's two sensors. One's for gauge and one is the Engine Coolant Temperature correct? Quote Link to comment Share on other sites More sharing options...
NewZed Posted March 13, 2015 Share Posted March 13, 2015 Pretty well described in the FSM. Can't go wrong looking through that, it's like a school book. Quote Link to comment Share on other sites More sharing options...
Eric2015 Posted March 13, 2015 Share Posted March 13, 2015 Ok according to the FSM the CHTS does read coolant temp. So the next question is why don't I have coolant at the CHTS? Even if the water pump was shot there should still be coolant in the engine....? Any ideas? Quote Link to comment Share on other sites More sharing options...
SleeperZ Posted March 13, 2015 Share Posted March 13, 2015 It measures head temperature, it is a dry sensor. Quote Link to comment Share on other sites More sharing options...
BLOZ UP Posted March 13, 2015 Share Posted March 13, 2015 Ok according to the FSM the CHTS does read coolant temp. So the next question is why don't I have coolant at the CHTS? Even if the water pump was shot there should still be coolant in the engine....? Any ideas? Read it again. CHTS stands for "Cylinder Head Temperature Sensor". Quote Link to comment Share on other sites More sharing options...
NewZed Posted March 13, 2015 Share Posted March 13, 2015 Faking to try to get his answers? We all used to do that when we were kids. Or it could be a reading issue. Quote Link to comment Share on other sites More sharing options...
Eric2015 Posted March 13, 2015 Share Posted March 13, 2015 Lol don't get so butt hurt NewZed. I read it. It that section it doesn't clarify if it's a dry or wet sensor. And then if you refer to EF&EC-88 you dip the sensor in water to test it's resistance. So beings the you tested it in water I assumed it read coolant temp. Thanks SleeperZ, that was all I needed to know. Quote Link to comment Share on other sites More sharing options...
NewZed Posted March 13, 2015 Share Posted March 13, 2015 (edited) Not butt-hurt, but amused (that's an intentional pun). At least you have a page number now, although it is after the fact. Edited March 13, 2015 by NewZed Quote Link to comment Share on other sites More sharing options...
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