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What can cause an automatic car to suddenly shake and stop? (mander.xyz)

submitted 10 months ago by [email protected] to c/[email protected]

29 comments fedilink hide all child comments

It happened to my car last week, it got towed to a mechanic and I'm yet to hear back. I don't know a lot about cars, so I'm hoping I'll learn something here and be able to tell if the mechanic tries to rip me off.

The car is a small hatchback automatic Hyundai Getz, 2009, serviced regularly. I've had it for 6 years with no major issues until about a year or so.

Five days ago I was driving through the city for at least 40 minutes when suddenly, while waiting at the lights, the car shook and for a moment I thought it would stall. I stopped on a side street, waited 20 minutes and resumed my journey.

About an hour later I'm on the motorway and it shakes again. I stop on the shoulder, wait, but it's not a safe area. I start again, only now I have the check engine light on my dashboard blinking. I manage to take an exit and my car stops on its own, the oil and battery lights now visible too. Fortunately there is no traffic here so I wait a minute, start again and park it on the shoulder.

Roadside assistance arrives, the mechanic looks at it and finds nothing wrong with it other than a fuel sensor which is an issue I've had for several years now. We get it towed to a mechanic but they were closing shop by the time I arrived. Before closing the shop mechanic says that at a glance he doesn't see anything, but notes the oil looks very clean.

I've never had the car shake like this. The last time it failed me was early this year, when it overheated during a very hot day, but it didn't shake. I've had the thermostat repaired since as well as a minor coolant leak.

Congrats, you've read this far. Thoughts?

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[–] [email protected] 10 points 10 months ago (1 children)

I'm a mobile plant mechanic, but would it run fine before driving?

As in idling and reving?

Knowing that would help diagnose between drivelin issues or engine issues.

Transmission could be fucked or the engine is getting hot and seizing.

[–] [email protected] 2 points 10 months ago (1 children)

Yes, letting it idle and revving wouldn't make it shake. The first mechanic tested that for about 15 minutes. The engine was cold by the time he arrived though.

[–] [email protected] 2 points 10 months ago* (last edited 10 months ago)

Hmm, seems drive related then so i would say transmission torque converter perhaps. They cause shaking and stall out engines. Or perhaps kickback valve.