Northstar Engines and System Technical Discussion Discussion, rough idle in Cadillac Engine Technical Discussion; I just bought a 96 sls and other then some very minor glitches the car is a machine!!!. However, yesterday ...
I just bought a 96 sls and other then some very minor glitches the car is a machine!!!. However, yesterday it started to run really rough at stop lights when I have it in gear and the a/c running. No codes have shown and the car has not died but it sorta sputters. I took it out on the freeway and cobbed it and it accelerated up to 90 but it seemed like it was missing a little HP. I have 87,000 miles on it and I am wondering if I shouldn't try a tune up and go from there. I was also wondering if it might be one of the 10,000 sensors the car has on it. Any help would be great. Thanks
If you just bought the car, it is always best to do a quick tune up. Then you will know what has been done to the car, as far as tune up maintenance is concerned.
I just went through a spell of running rough. My wife had driven the Eldy and gassed it up with some bad gas, possibly low octane. That is when it started. I ran half the tank out, put in an octane booster, then topped the tank off with some high octane from my regular gas station. My wife had used a station I have never used, not even for my 72 Olds. Like you, I wasn't getting any codes.
Let us know your gas situation. You egr could possibly need some cleaning.