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2004 Subaru Impreza Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2004 Subaru Impreza

2004 Subaru Impreza Problems

The Check Engine Light may illuminate because of a failed knock sensor. Although the sensor often tests okay, it can fail intermittently, while the vehicle is being driven.

Sometimes the Check Engine Light illuminates because the computer detects misfires. Subaru released an improved spark plug wire set to solve the problem. The ignition coil should also be inspected for carbon tracks or short circuits between the contacts

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2004 Subaru Impreza Questions

We found a small external head gasket leak on the front left side on my impreza. I have jumped on it early, and have a fair amount of cash to invest into it.. What else should I replace? Any advice for the repair itself?

Timing belt, water pump and pulleys done about 4k ago...

5speed manu...

It is cold outside and the sound goes away after the car has warmed up but it is concerning.

The ticking occurs with both a warm or cold engine.

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2004 Subaru Impreza Recalls

This limited regional recall is for vehicles currently registered or first sold in Florida, Puerto Rico, Hawaii and the U.S. Virgin Islands, and equipped with Takata-brand air bag inflators. Upon deployment the driver and/or passenger airbag inflator could rupture, increasing the risk of personal injury. Subaru dealers will replace the affected airbag inflator modules to correct this concern.

This recall applies only to vehicles equipped with Takata-brand air bag inflators. Upon deployment the passenger airbag inflator could rupture, increasing the risk of personal injury. Mazda dealers will replace the affected airbag inflator modules to correct this concern.

The front lower control arms may break at the hanger brackets due to corrosion. This corrosion is commonly a result of the hanger bracket being exposed to salty conditions, such as roads where salt is used as a snow melting agent. A broken control arm can result in loss of vehicle control, increasing the risk of a crash. Dealers will inspect the affected control arms and rustproof or replace them as necessary. The Subaru recall number is WVX-34.

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