Leaking oil

Tiny
MRANCOU1
  • MEMBER
  • 1998 FORD CONTOUR
  • 93,000 MILES
I have the SE model with the 2.5 L V6 DOHC engine. I noticed wet oil under the engine recently and when I investigated under the car I see a sensor screwed into the rear of the engine block towards the drivers side and it appears to be leaking from there. Although, I cannot be sure. Looking up towards the valve cover looks dry. The sensor I see looks to have an 1-1/8 hex on it. What is this sensor? My first thought is that it is the oil pressure sensor but my service manual says that is next to the oil filter. Any other common cause for oil leaks in this area? The Y-pipe and burning at which I can smell at stop lights and when idling. I know sensors like that can leak quite a bit when they go bad. Help!
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Saturday, February 18th, 2012 AT 10:23 PM

5 Replies

Tiny
RASMATAZ
  • MEMBER
-My references do not tell me anything on it, whatever it is. Remove the part and bring it in to an auto parts store maybe they can help. Or if it is not leaking on the housing and it is leaking at the threading take it off and Teflon it and hope it will stop the leak.
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Saturday, February 18th, 2012 AT 10:41 PM
Tiny
MRANCOU1
  • MEMBER
Actually, after a bit more research I think that the cause for the leak is a rear main seal. All things considered and by where I see oil I think this may be the cause because this is a five speed manual transmission so it is probably leaking down the bell housing. I am going to degrease the underside of the engine, wipe it down and drive it a bit to see if that is what it is. If I determine that it is I will post the results here.
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Sunday, February 19th, 2012 AT 3:20 AM
Tiny
RASMATAZ
  • MEMBER
Okay, thanks.
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Sunday, February 19th, 2012 AT 3:25 AM
Tiny
LITTLE BUCK
  • MEMBER
I have a 98 Ford Contour SE V6 2.5, had an oil leak dripping in the front off the AC compressor. You will find the leaking oil sending unit, seven dollars at O'reilly Auto Parts. About an hour job, jack car up, remove serpentine belt, remove bottom front cover, remove three, ten millimeter AC compressor bolts, but leave them in there holes, no need to pull them out. Pull AC compressor out and down about two inches at most, and a little to the right side of the car. Get a flashlight and see sending unit from the passenger side looking downward, or from the passenger side. Climb under vehicle with a socket and socket wrench, The size of the new sensor, and then put your hand up through the hole next to the oil filter and remove sensor wire. Do the same step with the socket wrench over the sensor, a little tricky buts there's room, I even used a 1/2 inch socket. Remove sensor, home free now. Goop up new oil sensor threads, and thread in new sensor with fingers, tighten with wrench, do not forget to install wire, jam AC compressor back in its slot, finger install three bolts, tighten three 10mm bolts, 1/4 drive works great. Replace drive belt and cover and start, check oil light on dash. Overall, the oil sending sensor switch is hidden behind the AC Compressor on a Ford Contour or Mystique 2.5, and can leak a lot of oil, mine was a quart leaking every three days, which is not good, but you do not have to remove the AC compressor to fix it. Richard
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Sunday, December 27th, 2015 AT 10:05 PM
Tiny
KEN
  • ADMIN
That is great information. :-) Thanks Richard (little Buck).
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Monday, December 28th, 2015 AT 8:51 AM

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