I´ve been having some serious problems with my ´90 escort lately. This past saturday I was on the highway with my girlfriend when i felt some small jolts...like the engine was knocking or something, but they went away and i didn´t think much about it. They had also happened a few times the past weeks, but only right when i accelerated or took my foot off the gas pedal. Then, on the way home that night, it started doing it a lot, like whenever it was just coasting, and the only way to keep it form jolting was to keep my foot on the gas. It stalled everytime i came to a stop light or stopped at a turn on the way home. And then when I started it back up, i had to give it alot of gas before putting it in drive. Also, when I did start it up, and idled it, the rpm went crazy. But the next day, i drove it home and had some problems, but then I took it for a drive and it was fine, it was fine all week till tonight when it started again. I put fuel injector cleaner in it. Could it be the fuel pump?