my vehicle jerks when I turn it on, and also when I turn the AC on
I think its the timing problem.Just ask the mechanic to tune the timing.Have you not serviced your car for sometime?this are usually the signs.Hope it helped you
possible engine mount /transmission mount broken. have the car checked and while it's up on the lift get the mechanic to inspect the subframe mounts as well.
Search Ford Windstar Questions
Ford Windstar Experts