2 replies to this topic

[hungdynasty]

I see the Idle Hot (Decay) Position in https://memsfcr.co.u...ault-diagnosis/ as following

 

"This is the number of IACV steps from fully closed (0) which the ECU has learned as the correct position to maintain the target idle speed with a fully warmed up engine. If this value is outside the range 10 - 50 steps, then this is an indication of a possible fault condition or poor adjustment. This value can be forced for a short time using this function."

 

 

And I have the memsdiag android app and see this in their blog http://memsdiag.blog...ml#comment-form

 

" Idle recovery - decay rate - Seems to influence the "return-to-idle" rpm speed. Its effect is best visible during gear change, the engine will maintain the revs a bit longer before it returns to idle (or shorter, depending if increased or decreased the value)"

 

My question is are these two functions actually the same thing? Their description are quite different which confuse me, thanks in advance.

[genpop]

Hi hungdynasty

those are different values. idle hot position is an output of mems while idle decay is an input value.You see them on different places in mems diagnostic tools.As well blackbox solutions describes them in different way.

[hungdynasty]

Hi hungdynasty

those are different values. idle hot position is an output of mems while idle decay is an input value.You see them on different places in mems diagnostic tools.As well blackbox solutions describes them in different way.

Thanks genpop.