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Power Fc, Missing On Boost

S1R33

By S1R33,
in Engines & Forced Induction

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S1R33 Contributor

S1R33

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Posted

Hi there

I recently picked up my car on the run in tune on the PFC, its got a 4 grand limiter, some dipshit was fiddling with the PFC :) and the engine warning light stayed on and the car started hesitating/missing on boost. I took it into the mechanic and they said they just turned some options on the PFC on, they disabled them and the egine warning lgiht went away.

But the car still hesitates/misfires when coming on boost, is there anything on the PFC that you think i can check.

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https://www.sau.com.au/forums/topic/169459-power-fc-missing-on-boost/
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S1R33 Contributor

S1R33

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If the warning light stays on (rather than flashing), that's a bad sensor somewhere.

If you can get it to do it again and go to 'sensor check' i think, it will highlight the one with the issue for you.

Does it sound like the O2 sensor cause, the wiring plug got half melted by the exhaust but the Air Fuel Ratio gauge still works

Birnie Veteran

Birnie

Posted
Posted

I'm not sure to be honest but 1st thing I'd check is the AFM setting.

Make sure it's on the right one.

Just highlighting the wrong one and backing out of the menu chooses that AFM which I've done accidently, but it made my car undrivable doing that. I was nearly crying! haha, quick phone call to tuner fixed it :teehee:

Try swapping between option 1 and 2 which are standard R33 AFM, and Power Intake (pod). (assuming you're on the standard AFM)

Mine was tuned on standard R33 - option 1 even though i had a pod so just depends on what your tuners selected to start with.

But after all that, it may be something else! Good luck

huddy Veteran

huddy

Posted
Posted

check all your connectors are on and clean.

i had a similar issue with pfc in my car, tuned out it was bad connection on water temp connector and then another one (seperate occassion) with injector connection causing no spark at all in one of the cylinders... turned out it was that green goopy shit that the std connectors get after time.

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