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Vibration And Oil Leak

1471 Views 8 Replies 3 Participants Last post by  91-560SEC-Owner
Hello. Two days ago my husband and I purchased a used 1999 S-420 Mercedes Benz with 37,000 miles on it. This beautiful car has had an interesting past. It was first a leased vehicle, then it was auctioned, and before we purchased it, it was repossessed.<br>
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Yesterday we noticed that there is a lot of noise (vibration, like what you would hear in an airplane) coming from the engine right under the black plastic cover on the driver's side, right above the fan belt. Since I am not a mechanic and have little engine knowledge, I can't tell you what this part is called. <br>
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This 'vibration' seems to worsen with deceleration from normal city speed and with turns. A person from another site suggested it could be the 'heat shields,' but I haven't a clue as to what a heat shield is.<br>
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Also, yesterday we noticed fresh oil spots dotting our drive way. My husband put a piece of card board under the engine and today I noticed four drops of clear oil on it.<br>
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My husband is trying to contact the dealer for repairs. We do have a seven day return policy, or 500 miles, which ever comes first, to return the car.<br>
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Can anyone give me any advice as what is causing this or if I should return the car? We did purchase a $2,300 36 month extra Starmark policy on the car which, I believe is non refundable.<br>
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Thanks so much in advance.<br>
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Sincerely,<br>
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June<br>
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PS Does anyone think I bought a lemon?<br>
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Discussion Starter · #4 ·
Dear Mithra:<br>
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Thanks so much for your sympathy. You know, this car really did steal my heart. It was perfect in every way, except for the huge repair needed on the steering gear box!<br>
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I've test drove another 1999 model, this time an S 500, but it was so filthy on the inside and the dealer wanted more for it than the price listed in the paper (he said it was a 'misprint'), that I decided not to go with it. Why do owners trash a car so badly? My 560 SEL is in immaculate condition and I just baby that car! Whenever I take her in for emmissions testing, the tester always says, 'Bring that beauty right over here to me!' People even stop me while I am driving to ask me questions about her!<br>
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Enough about my car though. Mercedes Benz has stolen my heart and in my opinion, no other car can compare. It is a love affair I think. Well, I am back to square one with auto shopping. <br>
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Thanks again for the sympathy and for the words of encouragement. Too bad I am going to test drive Infinities, Avalons, and Lexus's too for comparison. Why do I feel like I am wasting my time? Perhaps it has to do with having the best. What do you think?<br>
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Hugs,<br>
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June
 

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Discussion Starter · #5 ·
I have an immaculate 1999 S420, beautiful inside and out. No stains, no smells no wrinkles. Garaged. I have only gone in the rain three times since ownership. Maintained at dealer with 1700 mile Oil Changes.It has sunshade and heated seats It is black on black with 45000 miles.Email me if you are interested. My selling price is 43000.<br> New Stuff that dealer put<br> Oil Pump, Oil Sensor, Coolant Flush,All Brake Pads, Full Detail, New front bottom leather seats, cupholder, sunshade, battery, Michelin Tires, both front door check straps, brake fluid.<br> Service Advisor tells me I have the cleanest and best 99 S420 he has ever seen. I'm selling it because I just bought 2001 s600
 

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Hi, I have a 1991 560SEC (W126) with 79,000 miles. The car is always garaged and never driven in snow (which is pretty much the entire Chicago winters). This summer I took out the car from the garage and noticed 3 oil spots on the garage floor. While driving the car, I also noticed a burning smell from the air vents. Needless to say, there is an oil leak that needs to be fixed. In addition, I have been noticing that the car is ideling just a little bit rougher than usual. I took the car to a MB certified mechanic and he is given me an estimate of $3000. He says, all things will require about 20 hours of labor at $90/hour with $1200 worth of parts. :eek: This sounds excessive.

I want to keep the car and propoerly maintain it, he says that he will replace any gaskets for preventative purposes. According to him, it is far cheaper to do it all at the same time rather than peace mealing it; it will save labor. This is my "fun" car. I simply want to keep it in good condition and enjoy it on summer weekends, but if I am spending $3000 on preventative maintenance, it is not too much "fun". I would appreciate a second opinion on both the issues, oil leak and slightly rough ideling. :bowdown:
 

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From the information you have given it is not possible to tell whether the mechanic is being straight with you. As an example, the problem could be as simple as leaking valve cover gaskets which should cost close to $100 to replace or as complex as a leaking head gasket, which would require many more hours and will likely be close to the cost you mentioned. As for the idling, I have had several Mercedes of that vintage and they go through fuel injectors every few years. Again, no real way to tell what the rough idle would be without more information.

You will probably get more interest in this problem if you post in the W126 forum instead of this one, as your car is of that body style.
 

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From the information you have given it is not possible to tell whether the mechanic is being straight with you. As an example, the problem could be as simple as leaking valve cover gaskets which should cost close to $100 to replace or as complex as a leaking head gasket, which would require many more hours and will likely be close to the cost you mentioned. As for the idling, I have had several Mercedes of that vintage and they go through fuel injectors every few years. Again, no real way to tell what the rough idle would be without more information.

You will probably get more interest in this problem if you post in the W126 forum instead of this one, as your car is of that body style.
Thanks dlafever, I found the W126 thread. Its working out great. Best Regards. :thumbsup:
 
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