FleaDog Posted March 24, 2013 Share Posted March 24, 2013 95 legacy stock 190K miles I get that characteristic faint rattle sound of knock, pre-ignition, gas ping, whatever you want to call it at around 2250-2500 rpm under mild partial throttle conditions only, such as slowly accelerating or going up a hill. Most pronounced using 87 octane and gets about 50% better with 93 octane. its still winter grade gas here but this has been going on no matter what the season. Could this be a bad knock sensor - I know they can go bad and not throw a code. thx for any tips. Quote Link to comment Share on other sites More sharing options...
1 Lucky Texan Posted March 24, 2013 Share Posted March 24, 2013 could also be carbon buildup in the cylinders. Perhaps a SeaFoam treatment and knock sensor investigation to start? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.