Question about 1999 Peugeot 406

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I've got a Peugeot 406 petrol saloon-1999- 1.8V. It idles erratically revs goes up and remains high throughout the driving. Two electricians has tested the car and advised that the idling air control valve needs to be replaced. Thia was replaced with a genuine part from peugeot but the high erratic reving continues and in fact it sounds worser. What could I do next to solve this irratating fault?

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  • 25 Answers

Sounds like you have a vacuum leak spray some carb cleaner around the motor when it changes idle you are getting close to the leak put something on the fenders it will take off the paint if you do not feel safe will carb cleaner you can use water but use light mist to much water it very very bad. most likely it is the hose that goes to the power brake or the plastic connection from the motor that the last thing people check after spending to much money trying to fix the problem

Posted on May 17, 2014

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Posted on Jan 02, 2017

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redds55
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SOURCE: I have replaced idle control valve and car is still over revving,its a 1999 peugeot 206 1.1, mostly sits at 3000rpm but is quite erratic, help plz

Check the fuel pressure regulator for to much pressure.Pull the vacuum hose off the map sensor and if fuel runs out then replace the regulator.

Posted on Oct 16, 2012

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