2002 Volkswagen Jetta hesitation (misfire) while accelerati

2002 VOLKSWAGEN JETTA
424,000 MILES • 4 CYL • FWD • MANUAL
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DEAKSSS
  • MEMBER
  • 1 POST
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?
Apr 10, 2010 at 8:22 PM
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RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 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.
Apr 11, 2010 at 5:52 AM
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