I have a very bad leak coming from that plug under the oil filter on my H23. It's on the back of the block and appears to be some sort of sensor, my guess being a crank position sensor. Possibly a knock sensor?

Has anyone had this problem? People have had problems with oil cooler gaskets, but this is just a sensor from what I could tell.

I was told to replace the oil pan gasket, which took me two weeks, and it's still not even lessened. I'm fed up with this problem! The car is not driveable until fixed! Your help is greatly appreciated.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Attaus &raquo;</TD></TR><TR><TD CLASS="quote">I have a very bad leak coming from that plug under the oil filter on my H23. It's on the back of the block and appears to be some sort of sensor, my guess being a crank position sensor. Possibly a knock sensor?

Has anyone had this problem? People have had problems with oil cooler gaskets, but this is just a sensor from what I could tell.

I was told to replace the oil pan gasket, which took me two weeks, and it's still not even lessened. I'm fed up with this problem! The car is not driveable until fixed! Your help is greatly appreciated.</TD></TR></TABLE>

its your oil pressure sending unit, replace it with an OEM one. last time I replaced mine with a crappy napa one and it started leaking in a month

 

Do I need to replace the whole unit or just that gasket? If so, what gasket do I need?

How do I get it off? I tried a monkey wrench and my open faces are too small.

 

Get the whole sensor.

 

Have you replaced the pressure switch yet? Did it stop the leak. My h22a4 had the o-ring go out on the oil cooler a couple weeks ago, and I thought it was coming out of the pressure switch, and almost bought a new one until I decided to try a new o-ring first as it was only $2.45 compared to over $60 for the new switch. Sure enough, when I pulled the old o-ring off it was completely broken in one part and cracked all over everywhere else. Got the new one installed in under 10 minutes and haven't had any more problems. (as a side note, if you are going to install a new o-ring, use some bearing grease to hold it in place while you tighten the cooler back on. I read this on some threads before I attempted mine, and saved myself a bundle of time from what I understand.)