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Problems for specific Honda Civic Si years:

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Most reported Honda Civic Si problems

 

Verified for the Honda Civic Si

A refrigerant leak may develop from the AC evaporator causing the AC to blow warm air. Verifying failure of this component is difficult. A good shop will use leak detection dye to verify a failing evaporator.

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Verified for the Honda Civic Si
Evaporators can collect mold and give off a foul smell. Disinfecting the evaporator or replacing it will address this issue.
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Certain manual transmissions can cause a clicking noise when turning right due to a reverse gear contacting other gears in the transmission. The transmission needs to be disassembled and new updated gears need to be installed to stop the noise.

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Verified for the Honda Civic Si
Excessive second clutch wear (automatic transmission) can cause the car not to move and set a Check Engine light (MIL). Replacing the transmission is necessary when this happens.
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Verified for the Honda Civic Si

An oil leak at the spark plug area (spark plug tubes) can be caused by a failing valve cover sealing rubber and/or camshaft holder o-ring. The sealing rubber and o-ring will need to be replaced to address this issue.

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Verified for the Honda Civic Si

A faulty brake master cylinder reservoir filter can cause the brake system indicator to illuminate after a cold start and then go off. Replacement of the reservoir filter will commonly fix this problem.

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Verified for the Honda Civic Si

Some Honda Civics have seat belt issues that may be covered under Honda's Lifetime Seat Belt Limited Warranty. Please contact your local Honda dealer to see if your seat belt problem is covered.

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Verified for the Honda Civic Si
The evaporative emission control solenoid can fail in areas of the country where salt is used on the roads during winter. The solenoid needs to be replaced to correct this issue.
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Verified for the Honda Civic Si

On certain models poor igniter connections can cause misfires and catalyst deterioration. Cleaning and securing the connections will correct the problem.

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Verified for the Honda Civic Si
Cracked exhaust is common on both exhaust manifolds and manifold/catalytic converter combination. Replacing the cracked component will repair the problem.
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On certain models in colder climates the Check Engine light can set due to moisture in the Manifold Absolute Pressure (MAP) sensor freezing. The MAP sensor needs to be replaced and on some models the intake manifold needs replacing also.

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Verified for the Honda Civic Si
On some models the fuel fill door does not open far enough to clear the body. A special designed fuel door spring boot from Honda will fix this issue.
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Verified for the Honda Civic Si

CVT models (HX and GX) have a shudder, judder, and noise due to a worn start clutch in the transmission. Replacing the start clutch is needed to address this issue.

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Verified for the Honda Civic Si
Some models have an issue were the windshield wipers won't shut off due to a bad internal switch. The wiper motor needs replacing for this issue.
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Verified for the Honda Civic Si

A worn (front) bushing on the rear lower control arm can cause a noise when going over bumps. Replacing the worn bushing should stop the noise.

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