Sputtering Lexus

1993 LEXUS LS 400
198,000 MILES • V8 • 2WD • AUTOMATIC
Avatar
AL PENA
  • MEMBER
  • 1 POST
My car a 1993 Lexus LS 400 sputters badly while running and seems like it will shut off, its also really burning a lot of gas. I've put fuel injector cleaner in it several times. What is causing this and how can I fix it?
Apr 3, 2011 at 3:35 PM
Advertisement
Avatar
RASMATAZ
  • CERTIFIED EXPERT
  • 75,992 POSTS
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.

Note:If it doesn't apply disregard it and keep testing.
Apr 3, 2011 at 8:04 PM