Should also mention no codes and the car still runs great and has power aside from a weird stutter at around 4k - 5k RPMs but with this I'm starting to think possibly the sensors are picking up false knock? If there's something going on and making that noise I would imagine it could be related to that.
L67 knocking sound.
Hey guys so I've got an 02 GTP, the engine is from an 00 GTP and has 185k on it. When I did the swap a year ago I went through and did basically all of the gaskets and seals and did a check on everything including the pistons and what not. Well, this night I got home after a drive and noticed a knocking sound. It's usually very quiet and sometimes goes away completely. Rarely it does get louder to be more audible but quickly goes away again. It sounds like it's coming from the passenger side but I can't quite tell from where. With slight revs it does seem to increase in speed. It's really tough to tell because it's normally very quiet and sometimes just gone completely. Any ideas?
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False knock is the unicorn that I see way too many people optimistically attribute their KR to, like whistling past the graveyard.
Listen to what your car tells you, and if those sensors are consistently saying something, along with you audibly hearing something, address it before stomping on it anymore.
Rule #1 of a boosted car: Do NOT get into the pedal hard when it's not running right, because eventually it will force you to not ignore the issue in a bigger way.
Listen to what your car tells you, and if those sensors are consistently saying something, along with you audibly hearing something, address it before stomping on it anymore.
Rule #1 of a boosted car: Do NOT get into the pedal hard when it's not running right, because eventually it will force you to not ignore the issue in a bigger way.
You're probably right but I've been keeping a close eye on the sensors and watching out for any codes and so far haven't found anything out of the ordinary. Nearly everything relating to fuel, air, and ignition is just over a year old. Even when it does stutter there's no indication of anything going awry readings wise, at least from what I can see. I'm really hoping the knocking is just an old balancer or something relatively simple. I'm going to run it cold/hot and then without the belt for a short period to see if it goes away or changes tomorrow, maybe even get a video if nothing changes. Seeing as it's on the passenger side that already rules out a cracked flexplate or loose TC bolts. When I had this thing torn apart during my swap the tops of the pistons and cylinder walls looked really good. Looking inside with the pan off I didn't see any issues regarding the crank or rods either. Granted that was a year ago but I've kept up on the maintenance since then. If worst comes to worst I'll do my oil change early just to look for any glitter 😓False knock is the unicorn that I see way too many people optimistically attribute their KR to, like whistling past the graveyard.
Listen to what your car tells you, and if those sensors are consistently saying something, along with you audibly hearing something, address it before stomping on it anymore.
Rule #1 of a boosted car: Do NOT get into the pedal hard when it's not running right, because eventually it will force you to not ignore the issue in a bigger way.
Update for today, ran it from cold and let it warm up just idling. Didn't hear anything this time around even with some minor revs. Weird. I'm not going to write it off just yet though. Going to keep a very close ear on it and be easy on it.
Alright after some driving it quickly came back. Got two videos.
youtube.com
youtube.com
L67 Knocking sound(1)
youtube.com
L67 Knocking sound(2)
youtube.com
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