Hi,
Recently I noticed that my throttle position sensor is reporting an unstable signal.
It rapidly changes up and down few %. The higher TPS value, the higher the amplitude is.
Can anyone tell what could be the issue here?
I already did the thottle relearn (by disconnecting the battery and leaving the car idle for half hour).
tps.png
Are you actually feeling this when driving or just being seen in the scanner? Just from the looks of things, although you aren't showing map being logged to verify - it looks like you might actually have the throttle opening and closing??? If it is - is your setup boosted?
2010 Vette Stock Bottom LS3 - LS2 APS Twin Turbo Kit, Trick Flow Heads and Custom Cam - 12psi - 714rwhp and 820rwtq / 100hp Nitrous Shot starting at 3000 rpms - 948rwhp and 1044rwtq still on 93
2011 Vette Cam Only Internal Mod in stock LS3 -- YSI @ 18psi - 811rwhp on 93 / 926rwhp on E60 & 1008rwhp with a 50 shot of nitrous all through a 6L80
~Greg Huggins~
Remote Tuning Available at gh[email protected]
Mobile Tuning Available for North Georgia and WNC
Hi.
N/a. Not boosted. Stock intake. Stock throttle body.
I don't feel any fluctuations while driving. Shall I remove the intake tube to check if the blade is moving?
Idle also stable.
I will log MAP also and come back.
I checked again with MAF and MAP. Both are stable while TPS is jumping:
tps maf map 1.png
But then sth strange happened. I dragged the window to make the charts layout larger and after I resized the window .... the fluctuations disappeared and the chart became smooth. The same happens when I save the log, close the VCM scanner and open again the previously saved log. Is this normal or I have some problem with MPVI2?
tps maf map 2.png
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