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Subaru Repair & Diagnostic Hub

10 members • $1/month

2 contributions to Subaru Repair & Diagnostic Hub
AVCS issue or knock sensor problem?
Hello people :) i have a 2006 SUBARU legacy, 2.0i gasoline and LPG, approx 260xxx km (167k miles), located in RO, Europe. The engine started to lose torque before 2500 - 3500RPM, randomly. At higher RPM it seems to be working fine. It's gotten so bad that i feel like begging the car to just go. :) No error codes. Here's the weird part. Using TORQUE app from android and a cheap OBD BT dongle, after i clear errors (even if there is none), the engine suddenly behaves as it should, until i go above 3000RPM. Then back to no low-end torque. It happens regardless of the engine running on gasoline or LPG. Also scanned using a VAG cable and FreeSSM. No errors. What i did so far: Using RomRiader and some AI magic, i was able to pull some data out. Please see pics. Did the idle relearn procedure, multiple times, no change. Replaced the PCV valve, no change. Please help? :)
AVCS issue or knock sensor problem?
0 likes • 12d
This picture also. Hope it helps
1 like • 8d
@Tanner Osborn Thank you. In this case, i will change the intake pulleys first, banjo bolts + filters, both avcs solenoids and see if this solves it. Will return with updates.
Intro
Hi. First post here. I'm Ovidiu R. Prowd owner of a 2006 SUBARU Legacy, EJ204 NA, 165HP for some time now. Really great car, with small issues (nothing is perfect). Started having issues with the engine, will post about it soon. Subie in the image is not mine, but it's identical.
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Intro
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Ovidiu Rotar
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2points to level up
@ovidiu-rotar-5026
Just a guy with a subaru

Active 1d ago
Joined Apr 9, 2026
ISTP
Timișoara, Romania
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