How to increase idle rpm

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12-13-2021, 02:15 PM

sailby

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How to increase idle rpm

I have a 99 XK8 that is idling at 625 rpm and tends to throw a code but when the idle is around 750-775 it wont appear. How can I increase the idle? Thanks

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12-13-2021, 02:25 PM

JayJagJay

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What code? That's an important tid bit, no...?

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michaelh (12-13-2021)

12-13-2021, 02:45 PM

sailby

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Lean on bank 1 & 2 with restricted performance that all goes away one the rpm is over 740

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12-13-2021, 02:54 PM

michaelh

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Idle is managed by the ECM.

Air leak?

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Pistnbroke (12-13-2021)

12-13-2021, 03:09 PM

JayJagJay

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Quote:

Originally Posted by sailby

Lean on bank 1 & 2 with restricted performance that all goes away one the rpm is over 740

Running it lean is dangerous, hence the warning.

There are multiple areas around the intake set up where extra air can get in,,, ya gotta find em. Raising the idle ain't your answer, good brother... not really possible, actually

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