Jump to content

ISC with E Throttle?


Recommended Posts

Hello All

Chatting with my tuner about E throttle.. Idle control came up in conversation when using E throttle.

Now as i understand, normal E throttle setups use the throttle plate to control idle, does this completely negate the use of a 2 wire ISC solenoid or any ISC for that matter?

My concerns with E throttle controlling idle is the lack of resolution, 1% of plate movement has the potential to bypass a large amount of air. He even mentioned one vehicle he had, 0.1% of throttle input was too much  in plate opening.

When the ignition switch is turned on, does the E throttle crack open X % to allow for base air bypass for starting and idling? IE, the factory ISC has a bleed screw  that sets the base bleed air manually and then the ISC takes over for fine adjustment.

Another question we both had was when selecting E throttle, is the option still available to use a solenoid valve for ISC rather than the throttle plate for idle?

Sorry for all of these questions, i would be able to answer a lot of these if i had the ECU on power already but alas i haven't finalised my configuration yet therefore i haven't starting wiring. Trying to cover off all my bases - reworking wiring is something i certainly do not want.


Link to comment
Share on other sites

You are correct and the bigger the throttle relative to the engine size the harder the control get for idle over E throttle.

It is a nice option to have a dedicated Idle solenoid particularly if its a smaller cc engine with a large throttle. 

ECU wise you can have E throttle and then all the idle control done conventionally.

All the same idle control options exist on E throttle only.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...