Stagea 260Rs Rb26Dett Idle Issue

[GGGTS4]

Hey my fellow SAU'ers

I am having an IDLE problem with my Stagea 260RS S1 that has RB26DETT on it.

The idle goes up and down and not stable between 1500rpm down to 200rpm and sometimes stalls especially when called.

We have checked the AAC valve.. and cleaned it aswell.

I have read somewhere that TPS can be another issues and need to check the voltage, I have a datascan but I dunno what values i should be looking at.

We have tried swapping Air Flow Meters with my mates RB26 R34 which doesnt have any idle issue and plug it in to my Rb26 and it still doing the same behaviour.

But what myself and my mate notice is, when we pull out the plug out of the water temp sensor that goes to the ECU and the idle started to be stable around 800-1000rpm range.. But ones plug back in.. the idle goes up and down again.

We have tried swapping the water temp sensor with the R34 one, idle still the same, going up and down.. but we notice the part number is different on this RB26 water temp sensor compare to mine.

Is there anyone can give me information and point me to the right direction what else should I test and check?

Would be much appreciated!!

Cheers Sau'ers

[GGGTS4]

Bump guys!! I really want to fix the issue throughout the easter break

Cheers

[StevenCJR31]

you may have answered your own question-can you get another temp sensor with the right part number on it and try that?

[GGGTS4]

Did a smoke test and found out the issue was the intake gasket, change those intake, throttle and plenum gasket, idle is all sweet now