B18C R w/Individual throttles - suddenly will not idle!

[EKVTIR-T]

Sounds like a throttle cable problem..
Maybe got too much slack on it?

[grumpy rooster]

Try adjusting the throttle stop screw on the throttle bodies. It will be the screw that has like a spring on the back of it that rests against the linkage to stop it going too far closed. Screw it in a bit more. This should physically hold the throttles open more and keep the car running if you adjust it far enough.

BTW, the more you talk about these problems the more it is tuning related or some physical problem with injectors or fuelling.

[barefootbonzai]

should take your car to someone who knows what they are doing. you seem a bit lost when it comes basics.

As for the idle thing with the brake booster disconnected, are you blocking off the line or just leaving it exposed? Cause if you're just leaving it exposed, it can idle cause it's getting air from that line.

From the picture you posted, your ITB's are using a Vacuum box setup with the IACV connect to it. Is the IACV even wired up? From personal experience, ITB's and vacuum boxes don't work well together, it makes the map sensor readings laggy and weak.

[STiR]

I didn't say I was a tuner I usually just...drive.
I wanted to post the symptoms on here to get feedback to try and pinpoint whether its hardware related, tuning related or whatever. I did mention I will be taking the car to a tuner, however because I can't get there this week I wanted to try and shortlist the problems. Which is what this forum is about anyway I don't mind fiddling with basic things, I'm new to NA cars and I guess ITBs are a bit different, I'll leave adjustment of those to the tuner. Thanks for the input so far.

[STiR]

Also barefootbonzai is it possible to run without the use of the vacuum box?

[EG5]

Also barefootbonzai is it possible to run without the use of the vacuum box?

not possible to run without vacuum box . You need vacuum to be there.
try to raised the idle on your throttle body first and see how it goes .

[barefootbonzai]

you can yo. just T off the lines to brake booster and map sensor. but then that will eliminate the IACV.

but yeah, as myself and many guys on here have stated. adjust the throttle body position.

[STiR]

OK guys I'll have a look under that bonnet this afternoon and see what I can do about adjusting the throttle position a little, we'll see how it goes.

[grumpy rooster]

Just remember, adjusting the throttle opening to make it idle higher is only a stop gap fix until you can get someone to look at it. Its by no means going to fix your problem. You need someone to go over your setup and tune and work out what it wrong. Until you do that there really isn't much more help anyone can give you.

[STiR]

For sure. Fiddling here and there will only help me to get to know the systems a little better, but undoubtedly I'll be heading out to my tuner as soon as possible.

[fatboyz39]

Well I tried to increase the idle speed using the powerFC hand controller, but it hasn't made a difference. At the moment I set the idle speed to about 1100 or something, but its idling at around 800... Changing the idle speed on the powerFC didn't affect the idling at all.

Also another thing is at the moment the car will not crank over unless I have a my foot on the throttle. Strange...

not enough air to start the car?

[10KRPM]

Didnt you test drive the car before buying it?