Ok guys... this is on a 99 Eldorado ETC that was purchased at an LA dealer auction. It has approximately 105k mi on it. Originally, it had a possible loose gas cap warning on the instrument cluster. Then I noticed the jerking from a stop sign, and the traction + ABS lights came on together (as I recall), then went away after I restarted the car. Next, I drove it, thinking it had gas, only to discover that it didn't, which led to the fuel pump burning out. I coasted the vehicle down a hill on the freeway until I got near my house, that probably wasn't a good idea. Before finally deciding the fuel pump was toast, I sprayed the throttle body with carb cleaner, and pulled the MAF sensor for a cleaning. I discovered a hairline crack on the airlflow meter, slightly to the left of where the connector plugs into it. I had an Autozone manager who works on cars on the side replace the old fuel pump with an Ebay part from China (like everything else), including a sending unit (all in one). After I got the car back from Autozone dude, I noticed that it jerked and missed. It has been driven enough to go through all system monitors and it isn't throwing any codes. The vehicle will jerk at low speeds between 1st and second gear, also, if I give the vehicle a tiny bit of gas while it's coasting at 45-55 or so, it'll buck pretty violently. If I give it gas at 60-65 or over, it accelerates like a normal Northstar. With the AC on, going up inclines, the blower motor weakens by at least 35%. The check fuel cap warning has gone away, I now keep at least a half tank of super unleaded in the vehicle. So what would you guys say the problem(s) might be? Oh, lastly, I noticed the transmission fluid level was low. To me, it feels like a vacuum leak. I already replaced the fuel filter, but not the air filter, haven't looked at the plugs, the wires look worn out. Also, the exhaust smells rich... So where would you guys look for a leak with these symptoms? Thanks for any and all feedback.