Is there a special thread sealant used on the threads of the temp sender? I am thinking factory correct specs if anyone knows. Thanks.

 

Don't use any sealant! The sender circuitry works based on a good ground from its threads to the threads in the manifold, and thread sealant will increase resistance to ground, which will affect the readings.

 

Would be funney if that was the problem with mine I definatley wrapped it with teflon tape.New one is coming tomorow.

 

JohnZ-

Thanks. I thought there may have been a metal-based thread compound that didn't impair the grounding. With no sealant can I expect a bit of water from time to time or is the brass to alluminum seal consistently good enough?

 

...should seal well without sealant...neither of mine leaked, even with swaping out the senders

 

If you can't stop it from leaking without sealant, due to worn threads, you can use one wrap of teflon tape at the BOTTOM of the threads. The threads are tapered, so the actual seal takes place at the bottom first. You should still get a satisfactory electrical connection at the to of the threads. Best if you do not use sealant at all.