Question about 1999 Peugeot 406

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My 406 1.8liter engine has a tendency to shot down when in idle and cold. after 5 miles it runs fine.

After start the engine sometimes fails to run when car is in non accelerate mode or waiting on green light. The engine stops as switched off. there is no problem starting it again. If car is running releacing the cluch pedal will make it start up again. when the engine is warm it works perfectly. It has newer happend on the highway. (Idle trotel control has been cleaned before. But the problem is not like it was when that one was dirthy)

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(1) Check the ground (earth system). It is the most common fault of Peugeot from new. (2) check the ignition coil pack, it is the time to renew. (3) check fuel injector for dirty (4) check vacuum leak (5) renew your air filter and spark plug. Use Denso Iridium 0.4 mm 20 grade. Is it old XU engine or newer EW engine ? There spark plugs are different. Set the gap to 0.9 mm. Must be very careful to do so. Check the fault code from the ECU whether the TPS, AIC or O2 sensors at fault as well. Peugeot 406 is a very reliable car if you know it behaviour and service it properly. I have a 2004 406 Coupe 2.0 auto. Up to this present it has no fault at all. Even a blown fuse or light bulb or small piece of rust.

Posted on Jun 08, 2014

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  • 39 Answers

Sounds as though it may be the Throttle Position Sensor. TPS. It is on e the throttle body and sets the idle of the engine.

Posted on Nov 22, 2013

  • henning
    henning Nov 25, 2013

    Thanx Mark for your solution but as said I have cleaned this before (3-4 month ago) and at that time the fault looked different. So I were thinking the fault was some where else. I can inspect it again, but in the meantime I would be happy for other suggestions. Thinking loose connection - computer connection fault. It is evident that the fault vanish after varming up.

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Posted on Jan 02, 2017

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SOURCE: Poor idle sometimes stalls sometimes races

change the air flow meter

Posted on May 01, 2009

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SOURCE: My 1998 Peugeot 406 starts okay when cold but

I have 1996 Peugeot 406 (1.8 16v) and it's ignition coil pack was broken and the starting was difficult when the car was warm.  

Posted on May 08, 2009

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SOURCE: peugeot 306 1.4 petrol. Starts fine and runs but wont idle

it might be your ecu here is a link to a company that specialises in ecu's
http://ecutesting.com/peugeot_106_1_1_2_4_ecu_026120.html

Posted on Dec 13, 2009

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SOURCE: car wont rev

under the bonnet on the back of the mechanical pump there is a unit held in by 2 bolts
remove this unit and on the end there is a tiny filter
this will need cleaning because when the lift pump brakes down tiny parts of it get sucked up through the pipes and clog the filter
it may be best to feplace the fuel filter aswell

Posted on Dec 14, 2009

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SOURCE: 2001 citroen c5 2.0 hdi temp light, engine stop light

Hi mate
In is possable you have a faulty coolant temp sensor.
This could be confirmed by having a diagnosis check done at a garage.
It might have 2 sensors fitted so if it needs them make sure you replace the right one

Posted on Dec 15, 2009

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