Temp Sensor *FIX* - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 11-07-2004, 02:52 PM   #1
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Default Temp Sensor *FIX*

Everyone remember how my Engine Temperature Sensor never went above 125*F? Well, Padgett directed me to this green wire right under the TB. I saw it, but could never get in there, until now! I have the throttle/TV cable assembly removed, and now have clear access to this sucker. There are two things, one which I think is the actual temp sensor, which has a connector, versus just one wire. Then directly below it, is a little green wire, which seems to connect to something, but i'm not sure what. Well, the larger connector was just fine in terms of it'* contacts, however, the little green wire wasn't properly sealed, and 16 years of grease, grime, oil, and just all around crap got on it, and it was completly covered in the stuff. I am surprised it actually worked! So, I cleaned it up, and connected everything back up, turned the ignition on, and noticed the temp moved about 10*F from where it was before I started. Mind you, I have not tested this.. and I do not know for certain that this fixed it, I cannot drive the car, I cannot start the car.. she'* immobilized so I can't test it [otherwise i would have]. So, for all of you LN3 owners out there that has a malfunctioning temp readout, hop to this! I would have taken pics, but my mom is in Chicago for the weekend, and has the camera. I can take some sometime this week or next weekend if you want them, that badly.


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Old 11-07-2004, 07:28 PM   #2
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The coolant temperature sensor is located under the idle air controller (four wire connector). It may have a single blade connection or a two wire connector. The sense wire is green or yellow and if there is a second wire it will be black and go to ground.
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Old 11-07-2004, 07:38 PM   #3
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I think mine'* a three wire.. but nonetheless, I know what you are talking about. Once I get the TB off, i'll be able to remove this suckers for cleaning and inspection. I'm curious what just one wire can transmit. Oh well, I shall find out!


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Old 11-07-2004, 07:42 PM   #4
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Single wire sensors use the chassis or the block for a ground return. Bad grounds can foul up all sorts of things.
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Old 11-07-2004, 08:21 PM   #5
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Quote:
Originally Posted by padgett
Bad grounds can foul up all sorts of things.
I concur. I found this out the hard way.. and many times at that.


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Old 11-12-2004, 10:48 AM   #6
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how'd you get the tB off? i remember a thread where you were out of ideas! was there a bolt left on or something you dont want to admit ?


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Old 11-12-2004, 03:51 PM   #7
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Still haven't gotton it off. That damn tube is still stuck! I have a 3100 expert comming over tomorrow, and we are going to finish off the disassembly. I have everything off, EXCEPT the TB. Once I get that off, the intake will magically come right out, and hopefully the heads too. I can't find my camera, but if I don't get that damn TB off tomorrow, then i'm definatly going to make a point to find it. I'm pretty sure she and I can figure out the damn thing..


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