Megane R26 coil pack order please?? Rough idle & engine vibration after spark plug change

[jpmad4it]

Hi all,
Please can anyone confirm the coil pack order on the Megane R26? I had my spark plugs changed last week but I'm not sure the mechanic took notice of the order of the coil pack. The car is now vibrating like mad and I can feel it through all the pedals, even when idle. The higher the revs, the more vibration I seem to get.

The problem has just started since I had the work done,....the car was fine before.

I don't really understand the numbering system which is commonly used e.g. 3 4 2 1 etc. So I might need a dummy explanation

If I upload a photo of the coils on my engine could you guys confirm if any of them are in the wrong place?

Any help would be greatly appreciated.

Thanks
Jp

 

[andybond]

I would do the disco test yes.

It sounds like a spark breakdown of some description. Have you tried cleaning the TDC ?

 

[jpmad4it]

Ok I'll do that tonight.

Where about's is the TDC located in the engine bay? Does it need removing to be cleaned?

EDIT - and what's the best thing to clean it with?

 

[andybond]

front , bottom of the bell housing. Yes , should be removed to be cleaned

 

[jpmad4it]

Thanks
Anything else need to come off to get at it? or is it easily accessible?

 

[andybond]

Thanks
Anything else need to come off to get at it? or is it easily accessible?

Undertray off , and its between the rad and the box.

It sounds like its the TDC more and more now ..

 

[jpmad4it]

Don't have access to the undertray.

I'll have to get it to my mates garage and have a look.

 

[Brigsy]

When you say vibration on idle is it purely the dash rattling or is the engine rocking all over the place ??

Sounds like the mechanic has put the cheapest parts in from euro, i wouldnt be happy with that

 

[jpmad4it]

Getting a vibration through all the pedals, which was much worse in the hot weather we had a few weeks ago. And it was much worse on acceleration.

The idle is just very rough and clunky. Getting a bit of exhaust cough too.

All of these symptoms are worse in hot weather.

Could be a mixture of TDC sensor, injectors, engine mounts. God knows

Got the NGK sparks in now, and its the same.

Next job is to clean the TDC senor

 

[jpmad4it]

Disco test complete. Sounded much worse with each plug unplugged. So I guess it's not one of those which is faulty.

Need to get the TDC sensor cleaned next. Think I'm doing it on Saturday.

 

[jpmad4it]

Video by Jonathan Pilling

Video by Jonathan Pilling

Here are two videos guys of the exhaust. As you can see / hear the car is vibrating a lot and sounds like a tractor! And there's a lot of spluttering. Thought I'd share to see if this helps with diagnosis.

 

[Brigsy]

Exhaust cough will be injectors, renew or get yours cleaned

 

[jpmad4it]

Exhaust cough will be injectors, renew or get yours cleaned

Yeah I'm gonna take them off and get them cleaned. TDC sensor too.

Edit - can dirty injectors cause the engine vibration too, not just the exhaust cough?

 

[Brigsy]

Duff injectors could be causing the engine to idle rough if they are really bad.

 

[jpmad4it]

Hi again. Just had the Toxic Fume Filter System Warning Light flashing on my dash.

I've read that this also points to the injectors, is that right? Thanks in advance.

Edit - is it also ok to get these ANSU cleaned instead of fully replaced?

 

[andybond]

Hi again. Just had the Toxic Fume Filter System Warning Light flashing on my dash.

I've read that this also points to the injectors, is that right? Thanks in advance.

Edit - is it also ok to get these ANSU cleaned instead of fully replaced?

I had mine ANSU cleaned. Request a flow report.

The cost was £50 , new ones were £160ish I think

 

[jpmad4it]

Yeah the place I looked at offer that.

Do you think it's likely to be the injectors with the stuff I've posted recently?

 

[andybond]

I think its one of three things potentially.
Injectors
Coils
TDC.

In that order.

 

[jpmad4it]

Thanks. I'll get them checked out. I did the disco test and the engine ran a lot rougher with each one unplugged.

 

[jpmad4it]

Does anyone know if new injectors need programming after fiting them onto the Megane?

 

[Brigsy]

No programming required on stock injectors just plug and play mate