QuestionQUESTION: Why would my 1991 Seville have no power, i replaced the fuel pump, fuel filter and tuned it up. had the converter removed because it was pulled. every time i check the codes the always different, the car drives but it has no power. i know these cars has power because i had an a different Seville that would just about burn its front tires off, this one i get run faster then it can move
ANSWER: Hello,
I don't understand if the conveter is on now or not.
Did it back fire before removing?
Generally, backfiring is caused by a valve or ignition timing. Running right it should burn the tires off! It is a very quick little car,
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QUESTION: the converter is off and had less power with the converter on. I drove it for 1000 miles it started to gain power, the person i bought it from said it sat for at least 6 months. I also notice that one time check for codes i got two codes and then checked it again there was four codes pulled the negative cable and now theres two. I tried to clear the codes the way it say to your site and it wont clear them.
AnswerHello,
The first problem is that a converter is required on this vehicle and that may be why you are getting the hard codes. You can do severe engine damage without the converter. I hope that did not happen.
The first thing you need to do is install a converter.
The computer system to operate in what is known as a closed loop. Without the converter, the engine will definately not run righlt and you will set hard codes. The backfire could be attributed to this too. In the 70s we used to pull converters, but those cars were not computerized.
Since the computer, it is part of the total system. I am surprised whoevr made a pipe to bypass it would not have told you.
Now, once you get the converter back on, we can go over this. A mouse could have climbed up the exhaust while sitting for 6 months.
Bottom line- until you have the converter back on, I or anyone else is not going to be able to help you.
