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2000 Pontiac Bonneville Power Loss more than 40km

Tiny
LKSHW
  • MEMBER
  • 2000 PONTIAC BONNEVILLE
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 125,000 MILES
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.
Sunday, July 11th, 2010 AT 2:02 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 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.
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Sunday, July 11th, 2010 AT 8:43 PM

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