Question about 1992 Honda Accord

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1992 Honda Accord Oil Leak

Hi there,
My name is Joe and I read your post on FixYa addressing an oil leak on a 1992 Honda Accord.
I was able to trace the problem to the oil pressure sender/switch that screws into the block above the oil filter.  I removed the oil filter and replaced the oil pressure sender/switch, which was only $7.99 at AutoZone.  However, it looks like it is still leaking, and I am not too sure why.  Maybe it's coming from somewhere else?  It's a very slow leak . . .
What sort of thread sealer am I supposed to use on those little threads on the oil pressure sender switch?  I used blue threadlocker, and I am worried that it might not have sealed completely.
When I removed the old oil pressure sender, there was a lot of hardened, grayish, toothpaste-like "dope" around the hole, as if someone used a heavy sealer on the threads.
Could you please let me know if I should remove the sensor and use a different compound as a thread locker?  I am 99% sure this is where the leak is coming from . . .  Hopefully you can help me confirm this.
I really appreciate any help that you can give to me.  Thank you!
Joe Van Riper

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  • Joe Exists Jan 12, 2009

    Thanks for your response!

    I'm trying to figure out, though, what the best way is to go about cleaning the threads to the hole above the oil filter because I can barely reach up there to remove and install the oil pressure sending unit.

    The best I can do is clean the outside of the hole . . . and hope the sealer does its job in the threads.

    Any ideas on how to clean those threads? I can't fit anything up there, and it seems like it's pretty tight, but smooth up there when I screw in the oil pressure sensor.

    Thanks again

  • vitaforall
    vitaforall May 11, 2010

    do you still need help with this?

    if its an EX model oil cooler "o" ring leaks are common and is directly under the oil psi sending unit. the oil filter attaches to it. the grey stuff is honda bond. a liquid gasket similar to rtv.

  • William Wilcox
    William Wilcox Oct 26, 2012

    i had replaced the oild pressure switch my self and the easiest way that i got to it was when i replace my head gasket and replaced the switch from the top of the motor and i used tefflon tape to seal the threads to it



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Check the threads on the new sender/switch. They should be slightly tapered. Some of the less expensive replacement parts have straight threads, try a new part from the Honda dealer. The grey/white stuff is teflon type pipe sealant, this is the correct material to use on the sender threads. Clean the threads in the block very well first.

Posted on Jan 12, 2009


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