NuclearMinnow

I own a 96 cavy with 127k about 2 months ago it developed a random knock. it sounds like someone it hitting the bottom of the car with a rubber mallet on the passenger side. its decreased in frequency but I still hear it about twice a day at random times

spudracer73

if it is a dull noise it and happens under deceleration or at idle it could be a wrist pin connecting the piston rod to the piston itself.

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Classicrocjunkie

What motor? The Ld9 2.4L is notorious for throwing a main bearing on a certain piston. I forgot which one is was for sure, maybe # 3?

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jakegday

yes, #3

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NuclearMinnow

no its a 2.2 happens mostlly when shifting from reverse to drive or vice versa. sometimes when letting off the gas after accelearating andd rarely when braking.

Classicrocjunkie

Sounds more like a transmission problem than engine related issue.

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Please don't PM me with your J-body Issues. Post appropriately in the forums,
and I will toss my opinion in your thread if I have anything to help. - Thanks!

2004 Pontiac Sunfire Coupe SE Getrag 5 speed
2009 Subaru Impreza WRX 5-door



www.Rdfabs.com