Technical Twin Air misfire after oil change ?

[Tropicalmike]

I have just carried out an oil and filter change on a 64 plate twin air 105 at 35000 miles. We have had the car for 7 months. I have now had a couple of issues with a misfire and engine warning light coming on and the Start-stop unavailable showing . However , the first 3 journeys of about 4-5 miles each after the oil change there was no problem . I managed to clear the engine warning light and clear the start-stop light by stopping and re-starting the engine and it has then run OK after 10 seconds of revving it up.

The engine was fine before the oil change but has always had a little stutter in first few seconds on first starting with a cold engine .

It seemed too much of a coincidence that the problem only started after changing the oil and knowing how important the oil is for the Uniair unit.

I have checked with the Multiecuscan and it has logged the faults as below.

I trawled through other forum threads on this topic area for ideas and can confirm the engine has had and 0-30W oil before and again at this oil change after only 5k miles . I have used Miller oil that I have also used in another twin air and it has been fine. I have also carried out the oil change reset in Multiecuscan . But what I haven't done is check the oil filter for the Uniair unit. Can anyone tell me where it is , or a photo please. I think if it was a spark plug / coil pack issue it wouldn't just disappear on a re-start or when the engine is warmed up. The spark plugs have only done 5k miles. But I will swap over the coil pack plugs and see if I can move the fault .
Anyone got any ideas, constructive suggestions

Thanks in advance

 

[Tropicalmike]

Interesting video. Maybe if I had changed the oil in my TA when it still had it's 3 month warranty and the Uniair had played up I could have had an analysis done and claimed on the warranty. Especially if it proved they put the wrong oil in. Not sure what brand of 0W30 they used in the video but if their engine now has an issue I think the warranty might be invalidated. They certainly were not aware about the Uniair and critical oil.

 

[varesecrazy]

Had this exact issue a few years ago. Tried replacing coils, plugs even the front O2 sensor but to no avail. Noting that there was an Alfa service bulletin to no longer do the oil reset (reference to which I think I found via an Alfa forum), I concluded the reset had somehow crystalised the issue of a failing UniAir unit. But we moved the car on via a famous car-buying service so can't confirm a solution.

I have serviced many TwinAirs since without doing the oil reset, without issue.

Sorry if that isn't good news - somebody like Small Car Services may have a more expert view (seem to be one of the few professional independent Twinair experts).

Thanks for confirming

 

[GettinBetter]

Turned off when I saw that he hadn't cleaned all the rust from a leaking radiator expansion tank.. When doing such a major job IMO, it was an ideal opportunity to remove that mount and clean the whole engine bay. Looks like a typical slap it back together for YT clicks.

 

[The Panda Nut]

Odd isn't it,

One basic question. Is the oil pressure light going out ok

(just wondering if the new filter is restrictive.. And the Uniair cannot get a workable oil pressure)

I wonder and suspect, the issue is te oil filter itsself. Having seen the fit of two variants in mine and the two / three o rings. Its possible sometning here could be the issue. I woulf try another new oil filter first.

 

[Twotone2]

Apologies for resurrecting this old thread but I've just done another oil change in my wife's Panda TA 4x4 2023 @ 9225miles and the old oil was blacker than a black thing on a black night.

She does very short journeys every day probably only about 15 miles a day or 7/8 miles per one way to work.

I'm just reading how to do the oil reset in MES (below) but after reading this thread I don't know if I should bother?

Tony.

Service Reset using MultieCuScan - Fiat Panda 4x4 1.2 MultiJet 16v 95BHP | FIAT Panda (2012+)

Back in July 23 I purchased a Fiat Panda for my wife, I didn't trust the Garage selling it, but she fell in love with the car..... The last service receipt was for May 23 - but not entered into the service log book, so I didn't trust it. An oil and all filter change didn't inspire more...

www.fiatforum.com

 

[varesecrazy]

Apologies for resurrecting this old thread but I've just done another oil change in my wife's Panda TA 4x4 2023 @ 9225miles and the old oil was blacker than a black thing on a black night.

She does very short journeys every day probably only about 15 miles a day or 7/8 miles per one way to work.

I'm just reading how to do the oil reset in MES (below) but after reading this thread I don't know if I should bother?

Tony.

Service Reset using MultieCuScan - Fiat Panda 4x4 1.2 MultiJet 16v 95BHP | FIAT Panda (2012+)

Back in July 23 I purchased a Fiat Panda for my wife, I didn't trust the Garage selling it, but she fell in love with the car..... The last service receipt was for May 23 - but not entered into the service log book, so I didn't trust it. An oil and all filter change didn't inspire more...

www.fiatforum.com

Apparently Alfa sent their Dealers a Service Update,
stating NOT to do an update

I've not done an update on my TA's either

 

[Zardo]

Apparently Alfa sent their Dealers a Service Update,
stating NOT to do an update

I've not done an update on my TA's either

Are you referring to this? It's for multiair, not for twinair...

1036 0 000 AA

MULTIAIR SYSTEM Elimination of self-learning procedures after engine oil change and/or replacement of different components - Network Information

OPERATIONS IN NETWORK​

On the MultiAir and Turbo MultiAir engines the learning procedures are not required anymore after the following operations:

• Engine oil change - Op. 0010T10 and Op. 0010T12
• Engine oil temperature sensor replacement - Op. 1036F21
• UniAir module replacement - Op. 1036F20
• Replacement of hydraulic tappet rockers (MultiAir rolling fingers) - Op. 1036H51
• Replacement of upstream oxygen sensor - Op. 1080B94

 

[Twotone2]

Apparently Alfa sent their Dealers a Service Update,
stating NOT to do an update

I've not done an update on my TA's either

I ended up just resetting the service record.

14869km equates to 9239miles which is almost exactly what’s recorded on the dash I changed the oil yesterday with 9225miles on the dash but my wife used the car today to go to work.

Last year the oil change was done at 8038km or 4994 miles.

 

[Tropicalmike]

I have stopped doing the oil change reset on our two twin air 500s. I think the reset is the same reset you would do/get after fitting a new uniair unit ( if you read the notes in MES) For sure, viscosity of new oil is different to dirty old oil for a known temperature but the change from a worn(defective) uniair to a new one with new oil too is much more significant. What parameters in the software change with the reset we really don't know. Possibly just the start point on a graph for assumed viscosity based on temperature. How this changes with time or miles driven or what is learned by the ECU and how it modifies the VVT I am uncertain. I haven't done a reset since I fitted a new uniair. The principle of operation is the same for the alfa multi air engine and the twin air.

 

[varesecrazy]

Are you referring to this? It's for multiair, not for twinair...

I don't know for sure,

But it's a 4 cylinder version of a Twinair..