Have engine knock but no code?
Have engine knock but no code? Installed a few mods: LS6 intake, headers, !air, !EGR, plugs, wires
Had the car tuned the other day and it has a horrible knock, usually above 5k rpms but occasionally knocks randomly while under 50%+ throttle. I did not replace the knock sensors when I did the intake install. When it knocks it pulls 2 degrees of timing from the engine and does not throw a code.
Thinking about swapping the knock sensors to see if that fixes the problem, but they'd throw a code if they were bad right?
Anybody else had this problem? Any suggestions appreciated!
Jeff
Had the car tuned the other day and it has a horrible knock, usually above 5k rpms but occasionally knocks randomly while under 50%+ throttle. I did not replace the knock sensors when I did the intake install. When it knocks it pulls 2 degrees of timing from the engine and does not throw a code.
Thinking about swapping the knock sensors to see if that fixes the problem, but they'd throw a code if they were bad right?
Anybody else had this problem? Any suggestions appreciated!
Jeff
I can't actually hear the knock over the exhaust. But the engine is pulling 2 degrees when it happens, usually at 5k+ at WOT
Already done. Everything there is good.
Already done. Everything there is good.
FWIW, i was getting knock before and it was my clogged fuel filter. 5$ fix and 10 minutes.
Last edited by brad8266; Mar 3, 2008 at 05:41 PM.
Get the car on a scanner that shows what its doing. Like Hptuners or something and see what the timing is doing. If all plugs and wires are fairly new and look decent then it is prob in the tune 
. IMO I wouldn't be running the car to much if it is something more serious.
. IMO I wouldn't be running the car to much if it is something more serious. 
