My car shut off while driving?

Thank you so much! So if there was actual damage then the check engine light WOULD be on?

Would you be able to explain how to drain the oil?

Two months ago, my car began shutting off while driving regardless of speed (shut off once at 60 mph and once at 25 mph). Anyway, a test came back that our alternator was bad, so we replaced that and have been fine for two months, until now.

I was driving and the car shuts down and turns back on after a five or so seconds. It is good for a couple of minutes and then shuts off again and stays off for ten minutes. I finally get it started and try to make it home-less than ten minutes away, but it continues to turn off and back on, so I call a tow truck so it will not damage anything. The battery and alternator check out fine.

I researched some stuff on Hyundai forums and apparently this is common with most of their models. I read some people had success replacing their crankshaft position sensor, so we did that last night and no luck. After about two minutes of idling, it shuts off.

What could this possibly be?

-Upon shut off, all lights cut out, car stops running and the brake pedal will eventually stiffen up.
-it sputters.
-It occasionally will not crank at all.
-No constant check engine light-it will come on every once in awhile when it shuts off. Automatically, but it will not stay on for long.

Engine stoppoing suddenly when fuel gauge in the quarter. After about 15 minutes can be restarted.

During recent two weeks, my car has been shutting off four times while driving especially when I decreased the speed. Like when I want to park or I stop to rear back. It started working again after many trials of starting. Also, it does not start after about 5-10 minutes after the car is turned off. Like when I go shopping and it takes 10 minutes and I come back to drive my car again. None of the dashboard warning lights is on. I changed the timing belt just recently. The battery seemed to have no problem and also I took my car for inspection and their computer did not show any codes.

Hello Joe,

Thank you very much for your comprehensive information. I did what you said and I changed the crankshaft position sensor last week. My car up to now has not had any shutting off problem. However, I've got very bad start since I changed it. At first I could start the car after two or three times of trials. But today it did not start at all. Based on my observations, the engine cranks but it cannot start. Do you think the crankshaft position sensor is the culprit?

The engine shuts down with little or no warning. Until three days ago the 5 or so occurances where in hot weather and in stop and go traffic. The first time I had a problem with the car staying in a middle gear. It was stop and go traffic so I had an opportunity to stop put in park. And try different combination. Although the shifter position was in different spot. 1, 2, d. The movement was laboured and indicated a middle gear of some sort. Higher speeds did not change things and I drove it of the highway. The nearest service center was closed and after a while I decided to drive to my destination. The car drove well after that. Sometime later I had my regular service center check it and they didn't find any problem codes and besides some regualr maintenance. (Oil change and the common warranty issue regarding links) I was on my way. The next occurrence resulted in me towing it from a busy highway to Hyundia service. Tthey advised it was a speed sensor. It was changed under warranty and tranny flush ( my cost) a day later I was rolling again. This summer I had it stop a couple times more. I was in a position to wait a bit and after an hour it started again. Just this past week, in high speed traffic it did it again. I waited it out and unfortunately it didn't start up. The battery drained and I needed to tow it again. The response from the service center is that the diagnostics didn't produce a probelm code. The technician thinks a bit of corrosion on a sensor on the block maybe the problem, but this unproven theory will cost me $500 as the part has not "failed". They boosted the battery and they say its ready to roll. Going to only charge me partially for the test. Considering the circumstances. Yes. Isn't that great? Anyway. Long story short. The engine seems to stop when it its stop and go / or going well in hot weather. Usually it recovers after a period of time. Any ideas? I"m not a mechanic. Just a frustrated hyundia owner hoping not to have to sell car in order to avoid continued hassle.

No one could find out what was wrong with my car (crankshaft sensor) but this post fixed it for me thank you so much whoever you are :)

My car will barely go when I try to go and it’ll go 5 miles an hour when it says 20 and right after I get gas my car will shut off while I’m about to drive or it shakes really bad.

My car stalls and and runs a bit rough after refueling. After a few minutes it runs fine. I've changed purge valve and fuel pump. Still have the problem. Any ideas?