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Engine bucks and****** 90 Tercel

Tiny
TOYOTAGUY
  • MEMBER
  • 1990 TOYOTA TERCEL
  • 4 CYL
  • FWD
  • AUTOMATIC
I own a 1990 Toyota Tercel Dx with an automatic transmission, 1.5L 1bbl engine. My car******, bucks, and stalls when I accelerate and this usually happens between 40 and 50mph. I recently changed the air filter, fuel filter, and spark plugs but the problem still persists. I also had the ignition coil tested and it seems to fall within the acceptable resistence ranges. I'm pretty sure my exhaust system is not clogged and I have not changed my distrubtor and wire set as of yet.
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Sunday, February 20th, 2011 AT 4:38 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 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.
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Sunday, February 20th, 2011 AT 4:54 PM

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