2004 Subaru Impreza WRX STI Repair and Maintenance

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

2004 Subaru Impreza WRX STI 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.

See more problems 2

2004 Subaru Impreza WRX STI Questions

It's a 6 speed manual transmission. Shifting between 5th and 6th is very difficult.

I just recently bought a 2004 suburu impreza wtx sti with around 80k miles on it. Carfax was good, had a mechanic inspect the car upon sale. Just yesterday it started making a really loud fast clicking noise under the hood. I mean, its not just a subtle noise, its almost too loud to drive now, c...

all fuses check good under dash and under hood

See more questions 3