I bought a beautiful 99 DeVille Concours last year, casual sale. Have a young mechanic friend who keeps it together for me. Have had to do some minor repairs but, over all it's a great car. Only problem is a nagging noise that sounds almost like the jack and tire iron are rattling in the trunk (noise comes from Passenger side rear suspension area. Noise starts when you hit road speed and any bump will get it rattling. Goes away (temporarily) when you apply the brakes.
My mechanic buddy is rarely stumped (keeps older Caddies running for his dad and uncle as well as me) but this one is killing both of us. Everything in the suspension area is tight, even the knuckle bushing that goes on all old Caddies after 100K miles or so). Shocks seem solid - don't want to tear out the suspension to replace them if it's not necessary.
any one else had this problem? any suggestions? Hate to spend the big bucks to have a dealer tell me it's a loose nut (besides the one behind the wheel).
The rattle is probably not coming from the back. I had a similar problem with my 1994 Deville. I took out the jack and spare tire. I replaced the front anti-sway bar links (my mechanic said the ball joints were rusted on the links). Nothing worked. The solution was to replace the rubber bushings holding the front anti-sway bar to the frame. These bushings disintegrate and theanti-sway bar clicks against the frame. They are out of the way and so don't get noticed.
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Do you hear your compressor running? It may be that it is getting tired and ready to burn out on you. I replaced the compressor twice on my Deville before I found that there were so many holes and nicks in the air bags and it was going to cost me almost $1500 to fix the whole system. I went online and found Strutmasters. I got a non air conversion kit for my car and love it. Saved me money and headache.
Hello. The most likely cause of your problem is that the heater/AC relay is on it's last legs. This easy to change. Go to any auto parts store to obtain the part, and ask them to show you where it is located [under the dash]. Then just unplug the old and plug in the new. Regards, Joe
PS kindly rate my answer. thank you.
The hoses for your sun roof run down the front pillars. You may have clogs in the rear hoses that go down into the trunk area and when you move and stop the water rushes to the front hoses and run down. Gurgling is a good noise that the hoses are moving water. I would have all your hoses checked and flushed. The back hoses are most likely cloged or damaged.
You may have a leak in the rear air bags or the compressor for the air bags is not working,listen when you turn on the key to see if you can hear the compressor run ,if you do then likely the bags,if not then likely the compressor.
Before putting any engine back together when doing head gaskets, it is always advisable to have the heads and block checked for warpage and cracks. (don't know if you did or not). Additionally, I try to find the fattest head gaskets available, to provide a bit more cushion. At the point you are at, You need to see if there is any coolant in the oil (likely), then try to find out which side it's coming from, so you don't have to remove both heads again. Other option is to re-torque heads, going over factory value by about 5pounds, to see if the head will pull down. (possible but not definite) Other option is to send it to the scrapyard...I have often noted that once overheated, those engines become a "rolling problem factory", therefore I would not think it was a terrible idea. Or, you might want to experiment and try one of those exotic block sealers that are available...may be interesting to see if it works or not. Sad part is that if the manufacturers would use a better grade of aluminum and put some zinc back into iron castings, most cracks and warpage could be held to a rarity...nice dream isn't it? Good luck, whatever choice you make!!
Well, I can tell you with certainty you got a lemon.....but seriously.....you know you could sue this person due to the "lemon law". Other than that....you have a bad seal....sort of hard to say where....looking at a pic of the motor right now....could be several places in the front...but the main one would be where your harmonic balancer is and that is a pain to reseal....gotta pull the motor to pull the timing chain cover off and reseal the front seal.