Hi all, first post here.
Starting last year, my 2.8 started to slightly buck sometimes when driving. Brought it to Saab, and they told me to wait until it throws a code. One year later, it is getting much more serious, and is bucking very hard at idle and between 2,000, and 2,500 RPMs. One thing I've noticed is it generally only skips when the engine is warmed up, or when it is above 72 degrees (Fahrenheit). No CEL on the dash. Brought it to advanced auto to put on the scanner, no codes whatsoever. Coil packs are stock, but have a suspicion it could be one of the O2 sensors. Read other posts, but it seems like everybody with the problem is throwing a code. Anybody know the problem or have a similar experience?