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2004 Infiniti G35 Lower performance

Tiny
G35 OWNER
  • MEMBER
  • 2004 INFINITI G35
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 104,000 MILES
My car shows a "Service engine soon" light. I checked the problem with a scanner, and it shows ISC. I tried to clean the throttle body.

After that, I entered into a drag race with my friend who has the same car. At first, we both ran next to each other, but after few races, I was way behind.

Before the ISC problem appeared, my car ran perfectly and somehow better than my friend's car.

By the way the 2 cars are 2004 infiniti g35 coupes.
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Monday, March 8th, 2010 AT 1:20 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Lack of acceleration, chugging, hesitating, bogging etc. Could be caused by one of the following below.

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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Tuesday, March 9th, 2010 AT 4:54 AM

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