Question about 2005 Renault 181

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94 L reg clio 16v 1.8 tickover irregularities

The car i have ticks over normally but then drops to nearly stall, then revs back up to the norm. and does this constantly. even if you rev it up to say 5000 rpm, it still does it. I have changed,
idle control valve
throttle body
map sensor
ecu
coil.
any help would be great.

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Sounds like idle air control valve sticking. If i remember correctly, the idle air control valve is built into the throttle body. This is the part that connects between the air filter and inlet manifold. take this off and clean thoroughly with carb cleaner. if this does not work, then renew part.

TL

Posted on Jan 21, 2009

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A few more things to check for you.-

A vacuum leak in any of the vacuum hoses will cause the ECU to make random guesses at what's going on.

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Hope it's cheap for you!
Please spare a moment to rate as fixya! if any of this information proves useful. Thanks (I don't get paid for this)

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