Hi guys and gals,

Well took car down to local dealer after telling him of my problem. Got diagnostic test done and turns out knock sensor was showing -2%. Had reset done and retried. Still no better (if not worse). Got it booked in for Tuesday for more detailed look. Anyone know how long for ecu to recalibrate settings after reset?

Ta very much

Mark

 

what does the throttle position sensor read as a % on wot

 

I reset mine recently using my data monitor and it took a good 3 days before it felt normal, in terms of power and response, (about 75 miles or so).

 

>what does the throttle position sensor read as a % on wot<

Don't know mate. Just was told by dealer about knock sensor. That was only obvious thing they could see

Cheers

 

>I reset mine recently using my data monitor and it took a good 3 days before it felt normal, in terms of power and response, (about 75 miles or so).<

mmmmmm 3 days or 75 miles..................i'm on my way to fill up the tank !!

Cheers pal

 

Knock Correction

The number of degrees added or subtracted from the ignition timing based on the amount of knock detected. Positive values are ignition advance (due to the absence of knock). Negative values are ignition retard (due to the presence of knock). These ECUs run active knock correction, and it is quite normal to see -3 to + 12 degrees of correction. Maximum power is produced on the point of knock beginning, and the sensor is there to keep the timing 'on the edge'. Some ECUs run more aggressive knock correction than others. E.g. 1999/2000 model year turbo ECUs only run 1-2 degree positive values, whereas 2001-2003 ECUs may run much more than this.