1986 Oldsmobile Ciera my car is bucking

WEAPONHEAD

MEMBER
1986 OLDSMOBILE CIERA

Shakes or Wobbles problem
1986 Oldsmobile Ciera 4 cyl Front Wheel Drive Automatic

it started a month ago. My car started bucking between 30 to 45.

it also stalls when im shifting into reverse or drive from being in park. Also when im in park and turn the wheel.

i replaced the fuel filter to try to fix the problem.

didnt work.

so im about to take it on a road trip and I need to get it up to peak running condition.

i dont wanna junk my war machine. Please help///

1 Reply

RASMATAZ

MECHANIC
75,992 POSTS

Oxygen sensor
Dirty fuel injectors (cleaning the injectors often fixes this).
Bad MAP (manifold absolute pressure) sensor
Bad TPS (throttle position) sensor
Bad or dirty MAF (mass airflow) sensor
Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)
Bad gasoline (fuel contaminated with water or too much alcohol)

Sometimes, what feels like a hesitation is actually ignition misfire rather than lean misfire. The causes of ignition misfire may include:

Dirty or worn spark plugs
Bad plug wires
Weak ignition coil
Wet plug wires