Hi. I have a 99 S-10 with the anemic 2.2 and 5-spd. It's a 2WD with 160k miles. A month ago I changed the fuel filter just because it was due. As soon as the temp drops into the teens or colder, the darned thing bucks and sputters going down the road. Doesn't do it when it is relatively warm. It acts just like it is running out of fuel. The gas gauge wasn't working when I bought it so I changed the fuel pump hoping that would solve it. Gas gauge works now but still having issues. No check engine light. At idle and 50%-WOT or so it runs fine, but at light load it runs like crap. I dumped a can of Sea-Foam in the last time I gassed up with no results. Plug for the injector is okay. Any thought? Thanks!