2004 Honda Civic Si Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2004 Honda Civic Si

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2004 Honda Civic Si Problems

Power Window Switch May Fail

A faulty power window switch can cause the power windows to stop working, or to work intermittently.

Check Engine Light With O2 Sensor Fault Code

On certain models the Powertrain Control Module (PCM) can misinterpret the secondary oxygen sensor data and set a false Check Engine Light. A software update from Honda is needed for this issue.

Vibration When Braking Due to Rotor Problem

The front brake rotors can warp and cause a vibration when braking. The rotors will need to be machined or in cases where they are worn to thin, replaced to correct this issue.

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2004 Honda Civic Si Questions

What causes a squeak when turning and going in reverse (1 answer)

Every time I turn left the front of the car makes a squeaking sound and it has also started squeaking when I break and go in reverse but those are probably different issues. It's my friends car and I'm just trying to help him fix it

Engine revving higher,usual operations,gas pedal not engaged.? (3 answers)

2004 civic si, 77000 miles no prior mechanical issues, was at a stop in neutral and engine was revving up to 3500 rpm. when in gear car wants to speed up even though gas pedal not engaged. Total weird time was about 10 minutes, car seemed to correct itself(?)...

Engine light goes on often. would a new gas cap solve this problem? (1 answer)

Gas cap has been notched up.

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