Getting full knock retard, 12-15 WOT timing, F/R Knock codes
07-12-2003, 03:34 PM
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Getting full knock retard, 12-15 WOT timing, F/R Knock codes I dont know what the hell is going on with my car...but i dont think its a problem ive had sorted out since i got the ls1 swapped in my car. My car is very down on power but seems to run fine and im trying to figure out why. It dynoed approx 340-350 rwhp on my dynojet....
Autotap logging on my car shows the car to run fine cruising... When i go WOT the car instantly goes maximum knock retard, and it holds 12-16 degrees of timing through 1st/2nd/3rd gear till you let off. The a/f ratio on the car is about 12.0-12.5 across the entire pull. And ive got 2 SES codes, one for front & other for rear knock sensor. Which doesnt make sense, i think they are hooked up and working. It only does this @ wot though, car seems great part throttle...
How much would 12-15 degrees total hurt horsepower?? Id guess 50-60 rwhp?
what do i do here.
Someone told that its possible that its coming from something on the motor touching solid to the frame of the car. I know at WOT the motor torques slightly and the passenger header touches solid with the frame but i never thought it would be a problem.....
Autotap logging on my car shows the car to run fine cruising... When i go WOT the car instantly goes maximum knock retard, and it holds 12-16 degrees of timing through 1st/2nd/3rd gear till you let off. The a/f ratio on the car is about 12.0-12.5 across the entire pull. And ive got 2 SES codes, one for front & other for rear knock sensor. Which doesnt make sense, i think they are hooked up and working. It only does this @ wot though, car seems great part throttle...
How much would 12-15 degrees total hurt horsepower?? Id guess 50-60 rwhp?
what do i do here.
Someone told that its possible that its coming from something on the motor touching solid to the frame of the car. I know at WOT the motor torques slightly and the passenger header touches solid with the frame but i never thought it would be a problem.....
07-12-2003, 08:08 PM
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Re: Getting full knock retard, 12-15 WOT timing, F/R Knock codes found problem, someone unplugged the knock sensors apparently ....i guess bad joke by someone ...the connector under the fuel rail cover was unplugged.
07-14-2003, 11:15 AM
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Re: Getting full knock retard, 12-15 WOT timing, F/R Knock codes Can you post back your gains from the dyno with your timing Not being pulled now, or at least the difference between w/ and w/out the KR. TIA.
Charlie.
Charlie.
07-14-2003, 05:05 PM
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Re: Getting full knock retard, 12-15 WOT timing, F/R Knock codes 20rwhp, dayum those pesky KR sensors....I had a problem pulling 10*+ of timing as well. Although not on the dyno, at the track where it suffers. First time was a rubbing DSloop, now it is a matter of tuning. I imagine the time in which KR was pulling the timing would have more affect at the track than on a dyno...so I hope.
