Shudder which has cost me thousands with no fix
I have a 2015 ve commodore wagon, which has been perfect up until recently. Where it started to get a shudder when accelerating.
I took it to a mechanic, which said its sounds like misfiring and proceeded to replace the ignition coils and spark plugs. Which cost $1k.
On driving it home, the shudder was still there. I contacted the mechanic and said the issue is still there.
I dropped back off to them the next day.
After having for the day gave back to me and said they couldn't replicate.
I said it's clearly still there, which they said they didn't know and maybe i could try fix it....???? I am no mechanic or know sh!t about car engines.
I drove around for a few days but the shudder was still happening every time i drove and I hated driving it.
So I decided to take it to another mechanic, who says they had found a split fuel injector. But said they needed to do all 6. Which cost $2.2k
I said fine.
There was none in town so they had to order them in, which took a week to arrive. By this time i had no car for a total of 2 weeks.
I have got the car back, and on the drive home. It shudders again.
Its not as strong, but the shudder is still there. I can feel when driving between 20-60 it feels sick. It feels like dragging sinkers behind car, and anytime it hits bumps its slightly pulls.
But the shudder is 3 or 4 quick succession pulls like a fish on the bait.
So I have spend over 3k to fix this shudder, which is still there, I have taken back to the mechanic which they have only felt it shudder once. And basically gone. We don't know.
They tested the fuel, and there is a tiny bit of red fluid in the bottom. 1ml in 2L sample.
But essentially I am at a loss. I have just spent 3k at 2 mechanics to fix the issue. They have both replaced stuff that wasn't necessary to fix the issue. And now have to either put up with it, or find someone else to take a look at it.
I think this is absolute bs. Any suggestions on how to handle or what to do from here. Because from my perspective I have just been screwed and paid for services that wasn't required or fix the issue.