setting Idle on the 12P code

[benk]

I think I will strip the whole throttle body down and give it a good clean and see how it goes

[vn5000]

Also check tps voltage ,it should be beloww 0.8 volts from memory at idle and when you look at it as a percent tps when datalogging it should be zero at idle.

[delcowizzid]

below 0.45 at idle is normal for closed tps voltage will go into idle mode above that a bit though if its set too high it will sit there at 1000-1500 thinking its cruising along LOL

[Holden202T]

i have a number of no higher than 0.67v sticking in my head for some reason

[benk]

Here is a quick log of the high idle.

[vn5000]

Your map value seems a bit low ,there is a setting for max map for idle ,also have you set the right flags for 2 or 3 bar map sensor.

[vn5000]

Also looking at your baro ,50kpa,it should be 100.Check that the map settings match the sensor.

[benk]

Well my day has just turned to crap!
Have just relised that I didn't tick the 2 bar flage before I started tuning this engine, so I will have to start all over again.
Well on the bright side at least some of the issues that I have been having will start to make sense now.

[muttley383]

Just a novice question, is the idle max map setting setting " Scaler: IAC Params - Maximum MAP load limit".
I assume this setting is normally raised with aftermarket camshafts. What are the symptoms if this setting is left oem with a larger camshaft installed?

[vn5000]

If it is set to low the manifold vac on overrun wont be enough to stop the iac from counting down while in overrun, its more of a prob with manuals,and big cams,and can cause the idle to be to low or stall when you pull up at lights.