My 2000 Mercury Marquis is having a problem. It jerks or hesitates when accelerated. I had a new fuel filter put on but that was not the problem. I had a transmission mechanic drive it because I thought it was when it shufted or the overdrive kicked in. He says it is not the trans, He believes it is a computer sensor that is the problem. The engine light does not come on. And it does it at 30-45 but also at 60-70 Do you have a clue and is it an expensive solution? Also I had a new key made lately, could programing the chip have caused it?
Have the fuel pressure regulator checked, that might be your problem!
This is an example of one of the many questions that are asked our mechanics on chicagolandauto.com. Just go to
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