2002 Ford Ranger

Shakes or Wobbles problem
2002 Ford Ranger 6 cyl Four Wheel Drive Automatic 105, 00 miles

a few things 1. When I have my car in drive and my foot on the brake in jurks like someone is hitting me from the back. Like a rearender.

2. And when I go up the hill or on to a freeway I punch the gas and it jurks like if its going to stall so I back off the gas petal and it stops.

3. And it shakes like a bad spark plug or tune up.

I already put spark plugs in and changed the vac hoses, and did a air flow sensor fple.

I put alot of money in this car and my mech keeps telling me he has to do another sensor that cost 200 bucks.

Thank you
September 25, 2010.

Has the check engine light come on? Has the fuel pressure been checked?