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2002 Volkswagen Jetta hesitation (misfire) while accelerati

Tiny
DEAKSSS
  • MEMBER
  • 2002 VOLKSWAGEN JETTA
  • 4 CYL
  • FWD
  • MANUAL
  • 424,000 MILES
With heavy acceleration (i.E. Passing - engine under load). There appears to be a hesitation (misfire) for approximately 3 seconds. And then everything appears to run normal (i.E. Turbo, etc ) At no other time does this occur. Check engine light does not come on so no code is created to help source problem. At first thought it might be a coil, however
is it possible that coils could function sporatically?
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Saturday, April 10th, 2010 AT 8:22 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Inspect and test all the following listed below and get back with some results

Oxygen sensor.
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.
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Sunday, April 11th, 2010 AT 5:52 AM

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