having a problem with car running rough and jerking at cruise speed. on 1991 Lincoln Town Car

Have changed throttle-position sensor and made a slight difference at first, but don't think the problem is that. Notice that if I kick it down into passing gear, it will clear up for a short while. Also it will back-fire occasionally, I have listened for "dieseling" or "pinging" but haven't noticed anything. Too, the problem is intermittant. I have noticed that it seems to run alright sometimes, until we have to brake, then it will start. Any Ideas what could be the problem?

by in Cherokee, NC on October 17, 2012
0 answers

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