2000 Pontiac Bonneville Power Loss more than 40km

2000 PONTIAC BONNEVILLE
125,000 MILES • 6 CYL • 2WD • AUTOMATIC
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LKSHW
  • MEMBER
  • 1 POST
When running on 40km/hr and the engine gets hot and the car won't go faster than 40km/hr. No fault code shows up.

What is the problem here? Thanks.
Jul 11, 2010 at 2:02 PM
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RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
Possibilities: Inspect and test all the following listed below:

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft 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 it.
Jul 11, 2010 at 8:43 PM
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