02 GT vert, manual trans.
Started up and let idle at work while talking with a few coworkers, all of a sudden a strange knock occurred and stopped. "What was that?" Almost like a rod knocking but it stopped. A few minutes later it did it again - knock clack knock - wtf was that... We opened the hood, revved it some, couldn't repeat the noise. Since last night it hasn't happened again, it's driving fine but it does sound like a pully making noise at idle just no knock clunk knock. Anyone have any experience? Wondering if maybe a main bearing is trying to go out with the sad part being a tuner is in the mail.
127,000 miles, only a CAI and Magnaflow Catback
Started up and let idle at work while talking with a few coworkers, all of a sudden a strange knock occurred and stopped. "What was that?" Almost like a rod knocking but it stopped. A few minutes later it did it again - knock clack knock - wtf was that... We opened the hood, revved it some, couldn't repeat the noise. Since last night it hasn't happened again, it's driving fine but it does sound like a pully making noise at idle just no knock clunk knock. Anyone have any experience? Wondering if maybe a main bearing is trying to go out with the sad part being a tuner is in the mail.
127,000 miles, only a CAI and Magnaflow Catback