Do either of you guys have a "CHECK ENGINE" light on?
Righty - Sounds like worn injectors. What year is your car? (the Taurus, right?) A bad MAP sensor would throw things off a
little, but I don't think it would cause the injectors to leak into the manifold. Save your money on that for now. If the rest of
the car is in decent shape, spend an hour's labor in a shop & have them check it out. It's probably something simple.
draftermatt - Clarification, are you saying it won't go over 25 MPH, or is just gutless over 25? It sounds like a bad computer,
but without actually seeing it first hand I can't be sure. I had an older Volare that drove the previous owner nuts w/ similar
problems that turned out to be a bad magnetic pickup in the distributor. If your Jeep is a '96, it should be OBD II. Do you
remember what the trouble codes it showed?
BTW How is the fuel pump? I've seen this sometimes when they start to go bad.
Both of you - A local parts store might be able to check the codes for you at no cost.