Leaking Oil.
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Junior Member
Joined: Jun 2011
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2003 Jaguar XJR, 2000 S500
Leaking Oil.
I have a S500, I had an oil change before an the oil was 5w40 (dealer), to save some money and get a look under my car, I put it on a lift and did it myself. I put 0w40 in it, and about 1 month later, (last Tuesday to be exact) I get a message on the dash oil low, add 1 litre. I add it, and drive home. I wake up the next morning my driveway is a mess about a 2ft by 6 ft oil spot. I removed all the panels, clean up as much as I can, and refill with oil. The oil is leaking from behind the alternator. Whats causing that? I was thinking of driving it to the dealer but if its simple I'll fix it myself. btw the oil leak is bad. But only leaks when the car is on. Plus, I hear this air noise when the engine is on. Like theres a bad air line. PS. I dont have airmatic anymore. I have the coil conversion.
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Joined: Nov 2011
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S600
I would double check the drain plug and make sure it is tight and not cross-threaded or anything. My son changed his oil and bent in the side of his filter and got a leak from that one. Worth a look.
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Joined: Jun 2011
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2003 Jaguar XJR, 2000 S500
The first thing I checked was the drain plug. Its tight and not leaking. I'm going to check the oil filter but i doubt its installed wrong or its busted because i replaced with oem.... I used everything from the dealer.
I was thinking its the dipstick o-ring, or the rear main seal. but where should i check for those items? I have read in other posts for the m113 engine and those were their problems. Because its leaking behind the alternator.
Also where is the oil pressure sensor?
I was thinking its the dipstick o-ring, or the rear main seal. but where should i check for those items? I have read in other posts for the m113 engine and those were their problems. Because its leaking behind the alternator.
Also where is the oil pressure sensor?
Last edited by shoot_da_breeze; Apr 4, 2012 at 11:43 AM. Reason: left something out
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Mercedes
dont know where it is, but know its a source of leaks...had a jag that almost lost all its oil from a bad sensor
https://mbworld.org/forums/s-class-w...re-sensor.html
https://mbworld.org/forums/s-class-w...re-sensor.html
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Junior Member
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2003 Jaguar XJR, 2000 S500
Can anybody tell me the location of the oil pressure sensor? is it a easy replacement? part price? I dont mind trial and error process. as long as parts aren't $300 a piece. If just under 100 its cool lol.
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Member
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From: Sacramento
W221 2013 S550 Rwd, W221 2010 S550 Rwd
oliver is correct . behind alternator next to dipstick tube. it has 3 wire connector , replacement calls for 2 hrs book time, seems like bottom oil pan has to be removed. hopefully that solves your problem. goodluck
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2003 Jaguar XJR, 2000 S500
Sorry I've been away for so long, I busted open the oil pan, and swapped out the sensor. It didn't change anything. The leak got smaller, its about the amount of a pee stream, but not so pressurized lol. I had a friend think say he thought it was the rear main seal. but thats located right before the transmission, and it is not leaking that far back. Any other recommendations?
Super Member
Joined: Jan 2008
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From: california high desert
2003 S500, 03 C240, 03 E320, 03 tahoe
sound of air leaking
check your entire PCV system. if the system was plugged and i cant imagine how but the pressure would have to be released somewhere. if the bottom of the dipstick tube was the weakest seal than it could pump/blow oil out at that location. should not leak however when not running. i can actually tell if the wife has done any serious high rpm passing by checking the dipstick. anything over 4000rpm wil cause crankcase pressure to lift the dipstick just slightly. the only reason i mention this is because you said you are noticing a hissing sound.
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2003 Jaguar XJR, 2000 S500
How do yu change the dip stick o ring. I herd it was easy but how do you do it? I got it from the dealer and the oil level sensor from them. But never put the seal on. Any help would be appreciated
