95 Grandam, Hellllpppp

I have a 95 grandam with issues. About a year ago, I had a tune up as my car was running rough. When I got my car out, it was better for about a day. Then it seemed to be worse. I took it back and they told me it was an unrelated problem, and it was either the oxegen sensor or the entire computer system.

I thought they were a bunch of goofs, so I took it elsewhere. I was told that the sparkplug wires that were put in were faulty so they were changed. This really did not help and it was running rough. The back end of the car gets black sut all over it from the exhaust. I was then told to get the cadillac coverted replaced which cost a fortune.

It never really fixed the problem but it ran smooth. Very poor on gas and the black sut still appeared.

Now it has been about a year and the car is running really rough again. I took it in again and was told that I needed an ERG valve and the cadillac converter was plugged. I explained that this was new. Where we live, this is not needed so they just by passed it with a pipe. The car ran fine, but was very noisy and still a small amount of black sut. It has been a few weeks and now the car is running really rough again and the heavy black sut is back.

Can anyone advice me on what to do or what the problem could be. I feel like this vehicle is a money pit, but if it is working should still be worth some money, not working it is not worth anything.

Thanks in advance Just me

Reply to
JustMe
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sounds like the original diagnosis was probably correct, a faulty o2 sensor would tell the computer to dump in more fuel, so your car was running rich, giving you the black smoke, poor mileage, and clogging your cat (btw, its catalytic converter, no cadillac converted)

Reply to
M.C. Tee

YOur catcon is shot. Probable bad o2 sensors, leaky injectors, etc.

Reply to
=?x-user-defined?Q?=AB?= Paul

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