Join Date: Dec 2011
Location: Oldsmar, Florida
Need Help in Tampa
My car, 1996 Impala SS, isn't running right and I just don't have the tools, room, or patience to trouble shoot the problem myself. I've done a search for "rough idle" and discovered that it could be anything from a vacuum leak to fuel delivery to exhaust to ignition. I really hope that it isn't the opti. I went through that whole process on my '96 Z28 years ago.
I was driving the other day when all of a sudden I noticed a rough idle at a stop light. As I accelerated and got between 1000 and 1500 rpms, the car would slightly surge and drop back surge drop back etc. Far from running smooth. I can't "feel" any loss of power and when I really put my foot into it the problem isn't noticeable.
I changed the fuel filter, hoping that I would get lucky. While the old fuel filter didn't flow as well as the new one, this did not fix or even improve the problem. So, I took it to a "trusted" shop. They checked the exhaust and ran seafoam through the car. Still, no improvements. They said a lot of condensation/water came out the tail pipes indicating that I may have gotten bad gas that was high in ethanol. I was told to run the gas through before filling the tank and hopefully that would solve my problem.
Now when I first start the car up for the day, when it is cold, it runs fine. Within a couple minutes, the idle gets rougher.
That's what the car is doing. What I really need is someone who is very familiar with the car and or the LT1 in the Tampa Bay area that can help me figure out and fix the problem. I'll pay you, of course. Or, is there a shop in the area that knows our cars. The shop I went to does not. Any help or guidance would be much appreciated. This is the only car I own so I need it to run right.
Thanks in advance for your help and replies!
1996 Impala SS