ialcalde

Hey guys!

Recently bought a 2006 CLS 500 w/ 120k Miles.

Just changed the ac compressor and 2 faulty spark plugs.

But I get get a slight shake/vibration when i stop then it goes away.

I also would get a quick vibration when driving.

its a quick shake/vibration.

Ive tried to search the forums but couldnt find anything to see what I can check or do, really hoping to get help from the forum. The car is for my wife and I dont want to put her in a bad situation when driving the car.


thanks in advance!!

slk55er

See if you can get AutoZone (free), an alternative parts store or your local MB dealer to read any fault codes. If all is OK, you might check the motor and transmission mounts -- I'm not sure, but they likely are fluid-filled and can deteriorate and leak.

rrsupercharged

How is the idle? Does the rpm fluctuate?

ialcalde

thanks for the reply.

check engine light finally went on and it read misfire cylinder 1 and 6.

but these are 2 spark plugs and coils we just changed.

also as i was driving today the car died on me as i was stopped.

any guess what it can be?


thanks,

ialcalde

thanks for replying

yes it was going up and down then it just died.

rrsupercharged

Blown head gasket would be my guess....time to bring it to the shop and have a professional take a look at it..... Keep us posted on what you find out

ialcalde

wouldn't I smell/see oil or at least white smoke if it was the head gasket?

i surely will post what happens.

you know anything about to camshaft problem I've seen pop up several times with the cos 500?

bigben320e

Take your car in to have it checked out to a reputable indy or dealership. Had a similar experience (not with the shut-off) and it turned out to be motor mounts/transmission mount. Replaced, shake gone.

Since you are getting cylinder misfires, different issue, but take it in to get it fully checked. Don't guesswork the issue. Coil pack? Plugs faulty? It could be a several things.

rrsupercharged

Should be smoke coming out the tail pipes. Unscrew and remove your oil cap.....how does the oil around the top or under the cap look? Does oil have a milky white appearance?

petee1997

I had the same problem with my 2013 CLS550. Turns out some of these cars were built with faulty spark plugs. They replaced all 8 plugs and coils. The problem was solved.

If your car has 120K, I don't know why you would replace only two spark plugs. Replace all 8 plugs and coils. Also check if there is any coolant in the oil.