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Hey all i got bored today and PURELY out of boredom i decided to block of my BOV whilst doing this i went for a drive and heard it and then i got home, put it into neutral and released my foot off the brake and the revs where fluctuating from 600-900RPM, just wanting to know why?

Thanks guys!

And im not a hektik muzza etc i just wanted to learn more about my car on a boring day

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because the ecu in the car expects the air to be plumbed back into the system, but now that air has dissapeared and the car is freaking out :)

You put an atmo bov in the car, car stalls. Nothing to worry about, just remove the block plate and leave it as is. Problem solved.

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Ok i removed the block plate and the problem is still there come to think of it, it was there before i blocked it...

Is it becuase i just installed a pod filter or?

Because the cars revs are going up and down a couple of hundred RPM and when the car is idling it sounds a bit rough!

I just put a 3A pod in 2 days ago could the be the cause

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Nah the o2 sensor would cause your fuel economy to be shocking, idle variance CAN happen but it's rare.

If the problem wasn't present before you put the pod on then its the pod filter.

The reason the idle will fluctuate could be that a) the pod isn't on properly b) you didn't put the afm plug back in tightly c) the afm could have picked some crud up and you may need to clean it. Take the pod off and get some brake cleaner into the afm to clean it. Make sure you clamp up the afm tightly and secure the pod so it doesn't move. Hopefully it's all good.

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AAC Valve? When I first got my car the idle was hunting around a bit and sometimes stalled when pulling up to lights etc. Searched around here and someone suggested cleaning the AAC valve, after I cleaned it problem gone. I think theres a guide in the DIY section if you're not sure how to do it but could be worth a try.

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