Lumpy engine/misfiring

[freelancer]

Anyone in Perth/Dundee area with a T4 diagnostic available tomorrow?
On a visit to daughter and family near Auchterarder today but lumpy engine as if not firing on all cylinders on way down from Aberdeen this morning. Suspect maybe a coil pack or spark plug „gone“ (or Vis motor issue?) but obvs. not sure.
Thankfully no engine light warning.
Have pm‘d Astraeus but not sure if he is around.
Tks

[freelancer]

Postscript to my earlier message:

OK so there were no T4 patrolman standing by on the road back home last Wednesday...

Before I do have the chance to have it T4 checked, I thought I would describe symptoms a bit more fully in case its a bit more obvious to those of experience or with advice to offer.

Limped home as journey down had been with possibly slight misfiring? and slight vibration and then with slight misfiring and very noticeable vibration, above say 55mph. Improved when coasting or clutch engaged. Problem has not gone away. No engine warning lights(s) showing at any time.

Took car to Halfrauds early on Saturday morning as I know one of the guys slightly, so yes they plugged in their diagnostic tool ...but said there were no faults showing. Mmmm not sure how confident I am of that...

Do you think it is engine; spark plug(s), ignition pck(s) or VIS motor
or a tyre, wheel, bearing, half-shaft issue?

The car was MOT'd three weeks ago but garage cannot take vehicle in to have a look at it for another 10 days.

Any advice gratefully received thanks

[SD1too]

Originally Posted by freelancer

Do you think it is engine; spark plug(s), ignition pck(s) or VIS motor
or a tyre, wheel, bearing, half-shaft issue?

Hello Ian,

Misfiring, ranging from just detectable to so severe that the engine was reluctant to run from a cold start, was the symptom when I had ignition coil faults. I've never had sparking plug trouble in nineteen years of ownership. VIS actuator troubles don't cause misfiring.

It won't be a drivetrain issue. If I were you Ian, I would invest in a T4 diagnosis. When I had ignition coil faults, the "check engine" light remained off but T4 was able to identify which cylinder was responsible which was incredibly useful!

Simon

[Lagetha]

Is there anyone near you with TOAF, I use it on my 1.8 which runs fine, and has no warning lights - but TOAF reports minor problems... as per attached text file.

[freelancer]

Update:
Won't get a chance for T4 until week after next ...but meanwhile have got hold of a Foxwell NT204 OBDII Reader (from the very helpful. informative guys at Gendan).
I've got a fault code P1035.
Lots of suggestions when I resort to Google but failure in ignition coil No.? is there.
Might that be it?

[suzublu]

Originally Posted by freelancer

Update:
Won't get a chance for T4 until week after next ...but meanwhile have got hold of a Foxwell NT204 OBDII Reader (from the very helpful. informative guys at Gendan).
I've got a fault code P1035.
Lots of suggestions when I resort to Google but failure in ignition coil No.? is there.
Might that be it?

For your info https://www.the75andztclub.co.uk/for...ad.php?t=42209

[SD1too]

Originally Posted by freelancer

I've got a fault code P1035.

That code doesn't exist for the Siemens 2000 Ian (source: RAVE). This is the problem with using third party code readers.
Get it on the T4 in a couple of weeks and let us know what it says please.

Cheers,

Simon

[Lagetha]

Originally Posted by freelancer

Tks bl53krz,



I'm having two new front tyres fitted this Wednesday, so hopefully full resolution right there.

As a check, I had the front wheels separately balanced on Monday (one step at a time) and the tyre fitter straightaway reckoned the uneven wear, minor cracks and maybe a flat spot(s) on the front tyre(s) was the problem.

But your comment has me worried/wondering, as the main part of the initial MOT fail 6 weeks ago was a difficult piece of welding required at the offside rear subframe mounting.

Just for my understanding,, when you say "...rear mountings on the wishbones". is that the rear mountings of wishbones at the front? And, when you say "once fixed with new bearings", sorry what bearings is that?

See Arctic's post in members parts for sale... Unipart Bearings X 2. These are the front lower arm, rear bearings... Had the job done on mine recently with parts bought from Arctic/Steve. 🙂

Sent from my Note_7P using Tapatalk

[Lagetha]

Originally Posted by freelancer

Would a duffed rear bush on a front wishbone only make its presence felt at high speeds?



Vehicle had just had a MOT, could it have been missed?

Easy test, jack up front, see if any front to back motion possible while gripping the wheel... Before I had mine done OK on smooth fast roads, a little knocking on some uneven surfaces, and jittery steering at low speeds in tight turns etc.

Sent from my Note_7P using Tapatalk