Mrs Gaz's Polo has popped on its EPC light again, now followed by the EML.  A local garage have scanned it and came up with P230800, which makes sense.  It's had a barely perceptible misfire, just noticeable at tickover, which it's been doing for over a year.  The garage have said to replace all the coil packs because it's not possible to identify which one's failing, but I thought you could?

 

It'll be ten years old this year, and has just passed 55,000 miles, so I can see the sense in replacing all four, based on the thought that once one has started to go, others may follow.  A bit of me still thinks if three are fine, then they ain't broke...

 

There's several different makes, Bosch being at the upper end of the price range.  Am I fooling myself to think I'm getting better quality if I choose Bosch over names I don't know?

 

Ta

 

Gaz

Cylinder 3, I think Gaz.

See full description under this vid: https://youtu.be/1ZyIgvil_9A?si=DKGeqbpjK8ZPBPVu

 

I would certainly not replace unfailed ones, but I might acquire a spare to keep in the car, for potential roadside repairs.

Edited 5 February, 20251 yr by Breezy_Pete

A condition check of the spark plug in cylinder 3, if not all, would be wise prior to any parts spending, to be honest, if garage have not done so.

'Simply clever' would have been for the tech to look at the spark plug / plugs.

When were they replaced.  Failing plugs can be the cause of a failing ignition coil. 

On 05/02/2025 at 11:49, Breezy_Pete said:

A condition check of the spark plug in cylinder 3, if not all, would be wise prior to any parts spending, to be honest, if garage have not done so.

 

Thanks Pete for the previous comment about cylinder 3 👍  I was also thinking that a visual inspection of the plugs might be informative, but then I wondered if the misfire count might not be enough to show a substantial enough visible change (that's just a guess btw).  The garage didn't pull the plugs, this was just a scan to see what was going on, prior to booking it in with them.  Equally a visual inspection of the loom and connections might be useful methinks.

 

On 05/02/2025 at 11:56, Ootohere said:

'Simply clever' would have been for the tech to look at the spark plug / plugs.

When were they replaced.  Failing plugs can be the cause of a failing ignition coil. 

 

That'll probably be the next appointment.  I'm tempted to look myself, but I'm still not over a hacking cough that's put my breathing out of kilter.  Need to check, but I think the plugs were done in 2023.

 

It's funny that for the sake of two lights popping up on the instrument cluster, you wouldn't know there was anything wrong.  Power's still completely normal, stop/start's working fine, Mrs Gaz drove 75 miles yesterday and got 40mpg, which is above her 33.3mpg long term average (16k miles tracked).

 

Gaz

Edited 12 February, 20251 yr by Gaz
typo

Are you filling up with E5?

Lots of people reporting Misfires.  Down England way.

 

I take it it is still Winter Spec E10 that filling stations in the south are getting & as prices have gone up not some stuff that has been at sea in tankers before reaching UK shores. 

Edited 5 February, 20251 yr by Ootohere

2 minutes ago, Ootohere said:

Are you filling up with E5?

 

 

 

Yeah, it's on an exclusive diet of Tesco Momentum 99 👍

Really the plugs need looked at then. Not just looked at the gap checked on all 4. 

8 minutes ago, Ootohere said:

Really the plugs need looked at then. Not just looked at the gap checked on all 4. 

 

Agreed - just checked and they were done in October 2024, not 2023, and prior to that in September 2021.  Mrs Gaz is out all day tomorrow, so if she leaves her car here, I'll have a mosey.

 

If you'd like the current part number for the coilpacks, ping me the reg or VIN. 

Unless someone made a mistake (or only claimed to replace them...), plugs fitted in Oct '24 can't really be a problem already? Check no.3, sure.

You could swap the coilpack from cylinder 3 to cylinder 4 and see if the misfire moves to see if it's coilpack or spark plug/cylinder related?

On 05/02/2025 at 11:44, Breezy_Pete said:

... but I might acquire a spare to keep in the car, for potential roadside repairs.

 

Good advice taken 👍:

 

 

Of course since the scan and having the faults cleared, both the EPC and EML are keeping quiet.

 

Gaz

Well the EPC made a re-appearance, so I changed the coil pack a few days ago. Must've taken a whole four minutes to do, start to finish. Plugs are all good 👍 and Mrs Gaz got 46.9mpg on her 18 mile commute this morning, which is none too shabby.

Happy Wife, happy life 😀

Gaz