Mechanics

I HAVE A AND SOMTIMES IT STARTS BOGGING OUT THEN IT GETS UP TO SPEED THEN STARTS BOGGING OUT AGAIN THEN GETS UP TO SPEED IKE NOTHING HAPPEND,,AND ITS STARTING TO HAVE A RUFF IDLE ,WHATS THE PROBLEM??

2003 Nissan Sentra • 129,000 miles

Its idling ruff and when I accelerat I get up to 20 then starts bogging, then it will catch and get working smooth then at 60 it starts again, above 60 k it seems fine, whats wierd is it dosent do it all the time. What is the problem?
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Coreywolff
January 5, 2012.




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.

Also refer to this link: http://www.2carpros.com/articles/engine-hesitates

Rasmataz
Jan 5, 2012.


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