Studdering

JWACGB

MEMBER
1997 DODGE RAM
V8
2WD
AUTOMATIC
179,750 MILES

97 dodge ram 1500 with 5.9l. Just did a tune up. Replaced the plugs, plug wires, distributor cap, and rotor button. Runs fine until I hit between 65 - 70. Then I get a sudden studder for a split second. Keeps studdering off and on as long as I am just pushing the gas hard enough to keep the truck at speed. If I press the gas down further it stops studdering and runs perfect. Was not doing this before I did tune up. I also am not getting any warning lights when this happens. Thanks for any help you can provide.

2 Replies

RASMATAZ

MECHANIC
75,992 POSTS

Could be caused by one of the following below

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Knock sensor
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
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 it and keep testing.