30thAnnivSS

Thank you for the information everyone and the attempt to make me feel better about my retarded, I mean “slow” engine.

Great information and thanks. I’m pretty sure it was the knock sensor. Any thoughts on why the knock sensor would cause hesitation under lower acceleration when moving for the first time or setting awhile?

Check Engine Light (CEL) came on about two months ago on our 1999 Forester. The SUV is very hesitant under lower acceleration when moving for the first time or setting awhile. Appears to clear up after gaining speed but CEL is always on. Changed the fuel filer but is still an issue. Had AutoZone pull the code and it was PO335 or PO325. Any thoughts? Thanks if advance for your assistance.