Automotive

2003 CHEVROLET SUBURBAN
V8 • 2WD • AUTOMATIC
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AUGIEDOG
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  • 1 POST
My 2003 suburban can't get above 60 mph . I hear a roaring sound underneath my feet
Feb 1, 2011 at 7:51 PM
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RASMATAZ
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  • 75,992 POSTS
Could be a transmission problem and other causes 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.
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 it and keep testing.
Feb 1, 2011 at 7:54 PM