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Post Info TOPIC: IAPS and its relation to idle?!!


Veteran Member

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Posts: 26
Date:
IAPS and its relation to idle?!!


hello world;


before I have an issue with the flashing my ecu (Ecu editor Vs Woolich) and the problem was wired to me; I really become confuse about how hayabusa ecu is thinking.



my earlier issue was engine run with c42 error and its idle problem.

So I started few steps;

1) Mechanic says the ics is faulty; I replace from another bike. but the same.

2) diagnostic per manual steps says the faulty ecm !! replace the ECM from another bike was the same.

3) I remove all my harness and recheck but nothing is there a short circuit.



But ; when I install the harness By luck I forget to fit the IAPS to vacuum hoses !!

Then I started the engine and found its running good and smooth. I give it a acceleration and it return to idle!!

then I found the IAPS unplug; when I plug back it start to losing idle and giving C42?!




please note that I have a after market fuel regulator installed and sharing the same vacuum hose using T connector (throttle body hose)



these light gray hoses (pic from google)>>>






my earlier topic click here

any thing wrong, any idea or explanation ?! is the IAPS important for not? what is its rule?





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Senior Member

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Posts: 148
Date:

Check your clutch switch and flash a new bin file don't remove the vacumm hose from the sensor it is essential for part throttle and idle fueling.


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Guru

Status: Offline
Posts: 1233
Date:

Is the sensor working correctly? might be worth running through the tests from the service manual.



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