Ba turbo idle stutter rev up?

[jas98]

Ba xr6t 

 

Been having an issue for a few weeks when randomly at idle car mite be idleing and all sudden for a split second missfired but at same time it revs up quickly and is all good ...this all happens within like 1-1.5 seconds. 

.other times when it does this it does same but besides revung up for a second it revs right up and missfired/stumbles etc till turn car off and on again . 

 

 

Mite do this a few times over say 4 days then comes good for a week or so and then does it again. 

 

When driving car it's fine...dosnet do it or miss etc only seems to be at idle 

 

 

 

Codes I get are related to excessive rpm ..and maximum speed reached codes

 

 

Also I have tried a different throttle body and TPS.  Which it came good for a few days after that. 

 

There is no intake leaks etc literally covered everything besides maybe coils? But surely it would do it while driving aswell bot just idleing? 

 

Also thinking possibly wireing issue to throttle body but again why only when idleing? 

[k31th]

if it's so intermittent like that, it does sound like an electrical/wiring issue...