1993 Lexus LS 400 car want pick up speed

1993 LEXUS LS 400
220,000 MILES • V8 • 4WD • AUTOMATIC
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DWAIN J
  • MEMBER
  • 1 POST
my want pick up speed pass 60 miles an hr
Mar 7, 2010 at 9:46 PM
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RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
Lack of acceleration,hesitation,bogging,chugging etc. could be caused by one of the following below.

Inspect and test all the following listed below and get back with some testing results we start here.

Oxygen sensors.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle 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.
Mar 7, 2010 at 11:47 PM
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