[Jonny Roden]

I have a 93 geo storm and I paked it for a couple months once when I parked it it ran fine but when I went to pull it out of my shop it was running like crap come to find out my timing belt had somehow jumped out of time just enough where it would start and run but it ran rough and you could feel it miss, sounds like to me you are having a timing issue. Once I tore it apart and realigned the timing belt it runs like a top this actually not very hard to do but it is time consuming.I noticed that on your post you said it might be the 02 sensor but I thought id let know my 02 sensor is cut on mine its never been hooked up in the 6 years I have had owned it and I have never had a problem with that it has ALWAYS ran like a TOP Without an 02 sensor hooked up so I doubt that your 02 sensor is causing it to run like that: I'm not saying that its not a possibility I would just try unplugging the 02 sensor and see how it runs with it unplugged it cant hurt nothin to try maybe thats why mine was cut before I owned it but its got 280,000 miles on it and this thing runs like a champ without an 02 sensor.