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1994 Deville Concourse
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Discussion Starter #1
Hi people I recently bought a 94 deville concourse in mint condition with 100k miles for $2k. The engine and everything about it is amazing except the leaking oil. I'm upset and plan on taking it to the lot I bought it fr but after all the research and forums I've read it seems like just dealing with it is fine. Is this the case? Also my service engine light is on but I've had it for 3 weeks now and it's a dream of a car. Bottom line should I worry. Car had 5k miles put on it per year it's mint except for oil leak. Thanks in advance
 

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White Diamond '03 DHS (with DTS floor shift)
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86,785 Posts
Re: 94 deville concourse

Leaks are common and though usually very expensive to repair, nothing to worry about.

Pull the DTC's to see what turned on the MIL. See the DTC Sticky if you need assistance.

P.S.
Welcome :wave:
 

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2002.5 F55 CORSA STS, 2014 Explorer XLT FWD
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68,478 Posts
Find the source of the leak. Depending, the "fix" will be anywhere from $50 to $4700. Did the '94 Concours run the 4.9 or Northstar? - that also determines leak location and repair cost.
 

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1994 Deville Concourse
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Discussion Starter #4
Thanks I'll see what the dealer will do first but if I end up maintaining the leak and it lasts to 150k then I'm happy. It has the 270hp 4.6 32 valve (fun engine). I've researched the codes and they don't seem to serious. Like I said it runs great. Thanks Again
 

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If you're lucky, it might just be a leak at the oil pressure switch (pretty common). If your oil filter area is the main oily spot, suspect that.
 

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2002.5 F55 CORSA STS, 2014 Explorer XLT FWD
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68,478 Posts
OK - the Northstar.

Common oil leaks are: oil filter, oil filter adapter O-rings, oil level sensor, oil pressure sending switch (on the adapter), cam cover seals (nasty job), engine oil pan and halfcase silicone seals (they're not "gaskets"), rear main bearing seal.

Varies in expense (^^^ above sequencing) from peanuts to $4700.
 

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