My 245,000 1995 Legacy Brighton seems lately does one of two extremes:
1.) stutters/sputters (no backfiring) and drives like it's only firing on 2 cylinders or so, and also surges/jerks as if the ignition is switched off and on -- seems throttle position dependent
2.) or it will drive perfectly fine.
Seems to be influenced by:
-load (may be hallucinating, but it seems that when I upshift or downshift it tends to 'go normal'
Could this be a throttle position sensor worn out?