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My friends 96 MK3 LS 400 has a strange very regular problem....every few weeks it starts to cold idle at around 2000 revs and this makes for interesting driving...once warm it idles just a little higher than normal... {he starts the car from cold many times during his working day so this is very annoying for him}...the thing is if he disconnects the Battery something sems to re-set itself and he is back to normal for a few days...the problem must be electronic as the high idle is exactly the same revs every time...disconnect Battery = fixed again and so on ? :unsure: ...so its not a dirty throttle or anything...any ideas fellas ?.

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my one does the same thing but i have not tryed pulling the Battery off will try that tomorrow but what it is i have no idea

i read somewere that the trottle body gets chocked up with carbon but i have not had my one apart yet to look

but the only good thing when its cold it warms up nice and quick

matt

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hmm sounds like a dirty MAF sensor

Go to the club Knowlege base and view the instructions on how to clean.

I have done this and cleaned throttle body and works a treat... also economy was better too.

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took the Battery off today worked lovely and now the alarm works as well so done two jobs at once will have to get round and give it a clean now its lower the idie speed

matt

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