Question about 1999 Peugeot 406

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My peugeot 406 1.8 XU revs up when started from cold. It then settles down but hunts up and down. It has done this for the past 2 winters. OK in the summer. Have changed the coolant temp probe. Not solved. What next? Air temp probe?

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  •  charles dalton
    charles dalton Feb 16, 2012

    This problem is intermittant. Some times it works perfectly! The colder it is, the worse the reving and hunting.

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  • Peugeot Master
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You need to clean the throttle valve and the automatic idle speed control valve, follow the procedure below.
Buy a can of spray throttle valve cleaner (it is made by CRC) from the local auto parts store, NEVER USE CARB CLEANING SPRAY, IT DESTROYS THE ANTI-STICK TEFLON COATING, spray it into the air intake through the throttle body of the engine until you have used about half the can, you will need to hold the idle up while you do this, it will try to stall, after this shut the engine down and disconnect the Negative (-) battery cable for 5 minutes. The intake is now clean, if you continue to have the idle speed control problems you may need to seek the help of a professional

Posted on Feb 16, 2012

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Posted on Jan 02, 2017

alicantecoli
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SOURCE: Peugeot 406 SV rear seat removal

take it you have done it------- two brackets at front of seat

Posted on Nov 20, 2008

  • 4 Answers

SOURCE: peugeot 406 hdi electronic immobiliser warning

did you try the spare key? are you sure it is an immobilizer light? what does the warning light look like, can you describe it? replacing the battery in the key will not help as it is not needed for the recognition of the key(this is done by an induced current). 

Posted on Mar 05, 2010

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