Random Misfire

Anything related to the 206CC
gusthewonderslug
Posts: 3
Joined: Mon Apr 18, 2016 5:29 am

Random Misfire

Post by gusthewonderslug »

Gday from Perth WA.

I have a 2002 206 auto and I have a random misfire especially in the mornings, I have also noted that my temp guage is not working.
Is the cold idle circuit linked in with the temp gauge.
I have put new plugs in and checked all the connections to the coil pack and cant seem to find anything untoward.
I have noticed that whenever the car misfires the serpentine belt also squeals, not sure if the two are related or if it just a coincidence.
My only thought on this is possibly the crank angle sensor gets confused when the belt slips.
Looking forward to hearing from those smarter than I.
PS it has a new serpentine belt and a new tensioner is being fitted as soon as it arrives from Frog land.

Gus

IanL
Posts: 1558
Joined: Wed May 13, 2015 10:34 pm
Location: Jersey, Channel Islands

Re: Random Misfire

Post by IanL »

The crank angle sensor reads the flywheel, so the squeal is an effect of the misfire, not a cause.

It would be a good idea to get a Peugeot Planet 2000 reading of fault codes, but if you want to continue with parts roulette, you could try changing the coil pack. If you get a used one, you may be able to return it if it does not help.

On the other hand, the Coolant Temp Sensor feeds the Engine ECU, which also controls the ignition timing, so, if it's all caused by a single fault, you may have a problem with the Engine ECU, or associated wiring.

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GrandadMonkey
Posts: 3583
Joined: Thu May 04, 2006 8:00 am
Location: Leicestershire

Re: Random Misfire

Post by GrandadMonkey »

Hope you've used Bosch (or Peugeot branded plugs). Our Peugeots often don't seem to like any other make such as NGK.
Ron
"If it ain't broke don't fix it!"
Golf 1.5 Tsi Evo SE Nav Estate Atlantic Blue
Polo 1.0 SEL DSG Reef Blue (wife's)
(Previously owned a 2005 206CC 1.6 Allure Moonstone for 10 years)

gusthewonderslug
Posts: 3
Joined: Mon Apr 18, 2016 5:29 am

Re: Random Misfire

Post by gusthewonderslug »

Ian
I think you may be onto something,
Is there a instructional on replacing the temp sensor unit
Angus

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gazza82
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Joined: Sat Apr 23, 2011 8:41 pm
Location: Buckinghamshire, UK

Re: Random Misfire

Post by gazza82 »

gusthewonderslug wrote:Ian
I think you may be onto something,
Is there a instructional on replacing the temp sensor unit
Angus
If it's like the one on our 1.4 you pull the connector off, pull out a spring clip, pull the sender .. try and stop too much coolant pouring out ... plug in the new one, and push the clip back then the connector.

TBH I haven't looked at the 2.0 one! It's never been a problem .. ;)
Family Fleet: ex-Cayman Green 206 CC 2.0 LE, Indigo Blue 206 1.4 HDi Hatchback, Subaru BRZ Auto, Alfa Romeo MiTo

gusthewonderslug
Posts: 3
Joined: Mon Apr 18, 2016 5:29 am

Re: Random Misfire

Post by gusthewonderslug »

Gents
Thanks for the info so far, I forgot to say my 206 is a 1.6 twincam.
Angus

IanL
Posts: 1558
Joined: Wed May 13, 2015 10:34 pm
Location: Jersey, Channel Islands

Re: Random Misfire

Post by IanL »

It's the same for the 1.6. The sensor is plugged into the thermostat housing above the flywheel, marked 4005 2V VE on the drawing.

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