Cadillac Seville / Cadillac Eldorado Forum Discussion, OIL LEAK on 96 Eldorado,, need help in Past Cadillac Vehicle Discussion; I have a 1996 Eldorado with the 4.6 Northstar engine. I have an oil leak around the pump... on one ...
The engine oil pump is inside the timing cover, wrapped around the crankshaft snout. The oil filter adapter/block seal O-rings are known to leak, and if you have the heavy duty cooling package there will be two quick-connect oil lines leaving the top front of the adapter and snaking around to the passenger side front of the radiator tank - their internal O-rings might develop a leak.
I saw the oil pressure switch with the wire attached., Saqw a drop of oil there... but I dont think that is where the leak is. There are two other lines there... I am guessing oil cooler lines. One of them is leaking... pretty bad too.
Seems to be leaking at the bolt/nut.
Is this something a greenhorn can fix.... or do I need a shop?
Thanks for the diagram
Are there 0 rings in these lines??
Is this something I can fix.... or will I need a shop? Is it an o ring??
Oil cooler quick connects - NAPA or the Help! racks at a large parts store. Internal O-rings........... BUT, the oil lines themselves - the swage fittings from steel to rubber - have been known to leak also.
Get into www.gmpartsgiant.com, your car, system, and open the text page. There's a "more info" tab there - it opens a parts blowup keyed to the text page. Talk to Chris in Parts at Rippy Cadillac over there >>>>>>> ........ business hours, EDT.
IF you have an oil cooler - in the passenger end tank of the radiator - the lines have quick connects on the filter adapter end. The pressure sending unit uses a pipe thread - you'll need a sender socket and patience to remove/replace it. Most would remove the oil filter adapter and do that replacement on the work bench. The filter adapter itself uses 2 O-rings at the block/adapter face.
Lower air deflector removed ...........
Is this what we're talking about ???? (Maybe the 1996 oil cooler piping is different from later models ...)
Man.... Submariener.... you were a great help!!!
I got back under there and found that one of those pipes was lose.... I could move it with my fingers!! I tightened her up.... made sure oil was full... and had my son start the car.... NO LEAKS now! It appears to be a pipe threaded into the oil sending unit?? The #2 at the sending unit in your diagram.
Wonder if it has been leaking since I got the car a year ago.... because I, like some others who posted... have had to add oil quite often... but never knew where it was going. I am hoping it was this... and today it loosened up some more and got real bad.
My Eldorado is black with that fake convertible like roof ... a real beauty! Still under 100K miles on it... love the car!
I have another problem too. Last fall I got a warning that Freon was low. Well... I added some last week... and had air for a while.... but now compressor is not coming on again.... my guess is there is a leak somewhere.
Automobile(s): White Diamond '03 DHS (with DTS floor shift)
Re: OIL LEAK on 96 Eldorado,, need help
Originally Posted by heavenbound1
Wonder if it has been leaking since I got the car a year ago.... because I, like some others who posted... have had to add oil quite often... but never knew where it was going. I am hoping it was this...
Rest assured, SOME (if not most) of it is normal consumption. If you haven't already, read up on oil consumption and full throttle in the Technical Archives at the upper left of the forum page.