1989 Ford Escort car hesitates and bucks when accelerating

1989 FORD ESCORT
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RGLIOZZI
  • MEMBER
  • 1 POST
Shakes or Wobbles problem
1989 Ford Escort Automatic 142000 miles

When I accelerate the car kind of bucks back and forth and loses some power. It only does that when I push the gas in say more than halfway. If I drive it on a level surface and push the gas in a little, it's fine. It also idles just fine. I know it's not the fuel filter because I just replaced it. Just wondering if I could get some suggestions, thank you!
Apr 1, 2010 at 5:12 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,992 POSTS
Lack of acceleration,chugging,hesitating,bogging etc. could be caused by one of the following below.

Inspect and test all the following listed below and get back with some results

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard.
Apr 1, 2010 at 11:06 PM
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