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Old 05-27-2005, 10:27 AM   #1
67chevemall
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Temp sensor install ??????

Hello

Just wondering if I need some teflon tape on the temp. sensor and oil
sensor fittings??
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Old 05-27-2005, 10:32 AM   #2
stllookn
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It would not hurt to use it since it will help seal and will help reduce corrosion when or if you need to replace them. I use them on mine and they seal really well.
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Old 05-27-2005, 10:53 AM   #3
BobbyK
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Yes.The sensor will prob. leak without the teflon tape.
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Old 05-27-2005, 11:36 AM   #4
67chevemall
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Thanks guys!
Now I just need to buy the big wrench to fit down behind the Alt.
Must be a 15/16?
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Old 05-27-2005, 12:53 PM   #5
chickenwing
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Wait a sec... The temp sensor uses a pipe thread and teflon should not be required. Install finger tight + 1 turn. The teflon may interfere with the ground path of the sensor if you use a lot of it.
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Last edited by chickenwing; 05-27-2005 at 12:54 PM. Reason: spelling
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Old 05-27-2005, 02:53 PM   #6
67chevemall
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Thats how I have it now - the wrench turn.
If it leaks I'll try tape.
Thanks again
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Old 05-27-2005, 03:30 PM   #7
68haywagon
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I used some blue silicone gasket sealer on the '93. No leaks yet and the sensor seems to be working right. I had a 99cent pack from AZ laying around and thats all I could find.

Mike
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Old 05-27-2005, 03:36 PM   #8
67chevemall
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So maybe just a bit of blue gooo around the top.
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Old 05-27-2005, 03:41 PM   #9
chickenwing
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No, I do not think it is dum. You are just risking whether or not you get a good ground. If it works that is great. If it doesn;t work you'll be draining coolant... again.
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Old 05-27-2005, 04:13 PM   #10
BobbyK
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one turn of tape won't effect the ground,there's plenty of thread for a good ground.Like chick said,don't use too much.
Tape is just a little insurance against leaks.
I personnally wouldn't use the blue gasket maker though.Nothing against anyone who does...I just wouldn't.
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Old 05-27-2005, 05:17 PM   #11
68haywagon
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Thats all I had laying around and I didn't have a car around to go running out. I had to improvise and it seems to be working. When I removed the old sensor it had a orange substance on the threads. I didn't know what it was so I figured what the hey orange, blue its all the same to someone colorblind .

Mike
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Old 05-28-2005, 05:39 AM   #12
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I'm with chickenwing. most sensors now-a-days come with a sealant already on the sensor. If your reinstalling a used sensor you can get "sensor safe" RTV but I wouldn't use teflon tape. I'm sure a lot of people have and do but why chance the gage accuracy?
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Old 05-28-2005, 06:45 AM   #13
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Take the sensor and hold it up looking at it real close in the light. The threads are tapered. Pipe fittings require NO sealant on them. They use pipe thread specificly for that reason.
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Old 05-28-2005, 07:46 AM   #14
lost wages
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when i first fired up my truck the temp gauge did nothing, after alot of searching it was the the teflon tape on the sensor, had to drain the block and clean all the tape out. I wouldnt use any tape.
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Old 05-30-2005, 09:27 AM   #15
67chevemall
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Well I put the darn thing in then out then in then out then in with blue goo
Now I have to take it out because I need a different sensor for gauges.
Oh what fun it is.
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