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Car all back together but won't idle

ookami

By ookami,
in Engines & Forced Induction

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ookami Experienced

ookami

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I've got my car remodifed after compliance with my head back on and the damn thing won't idle. The car was only run a couple of times before it was demodified so i'm not totally sure but i'm pretty certain it didn't have these issues before.

The car, if its cold, will start first turn of the key and idle fine. Once the car heats up and the AC or head lights are turned on the car stalls. If you try to drive the car and brake and revs die down slowly it stalls. After it stalls you need to pump the accelerator to get it to start (sounds like a carby car) then it won't idle. It seems if its starving of fuel, but where and how?

Also since the car has issues at the moment i haven't been game to run any more than 0.5 bar boost, however the exhaust temp gets up around 900 degrees on this boost, where as on 1.4 bar previously (before de modified) it never got anywhere near that - yet again under fueling.

The Car has things like a greddy plenum, HKS Fcon V pro (AFMless) ECU, Tomei 270 degree cams, HKS GT2835 Pro S turbo etc.

Should i be able to run my AC and my head lights and still get the car to idle with these cams?

To me it seems like its starving of fuel but i have considered other issues like the TPS being out as we swapped the Throttle cables over for the greddy plenum, would this make a difference?

Thanks in advanced.

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https://www.sau.com.au/forums/topic/68067-car-all-back-together-but-wont-idle/
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MonstaS4 Collaborator

MonstaS4

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I'm pretty sure the TPS has to be within a set tolerence of 0 (e.g. 0.5%) before the AAC valve will attempt to control idle. So, yeah it does sound like it isn't set corectly. It idles fine when cold because the air regulator/cold air bypass valve is fully open.

ookami Experienced

ookami

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Posted

ok, car seems to run a little better now, got rid of the PCV and blocked it. TPS is spot on!! Fuel pump is hard wired, Hopefully a decent tune and a power fc will sort out the remainder of the issue.

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