- Joined
- Apr 13, 2013
- Messages
- 3,221
2018 Elantra w/ 55k miles.
I decided to replace all three of these sensors in an effort to fix a hard start / extended crank this car's had since it was essentially new. It happens so intermittently and sporadically that I didn't bother pursuing it when under warranty since Hyundai dealers don't do anything unless the CEL is on.
What happens:
When frequently stopping & starting the car hot, like when running errands around town, it extended cranks (~4 seconds) before starting.
When cold starting in the morning, it extended cranks and starts hard. The idle gets really lumpy and the exhaust has a strong smell of gas. I know a little gas smell when cold is normal but this is excessive. After a minute or so, everything smooths out. Again, all this happens very sporadically. It can be fine for a month and then it randomly acts up. And the CEL is never triggered.
Over time, I've replaced the battery, plugs, coils, air filter and ran fuel system cleaner. I've read about the cam & crank sensors on these cars having funky failures with similar symptoms so I've fired the parts cannon and now installed OEM Mando sensors.
Will monitor things but hopefully, this is a permanent fix .
I decided to replace all three of these sensors in an effort to fix a hard start / extended crank this car's had since it was essentially new. It happens so intermittently and sporadically that I didn't bother pursuing it when under warranty since Hyundai dealers don't do anything unless the CEL is on.
What happens:
When frequently stopping & starting the car hot, like when running errands around town, it extended cranks (~4 seconds) before starting.
When cold starting in the morning, it extended cranks and starts hard. The idle gets really lumpy and the exhaust has a strong smell of gas. I know a little gas smell when cold is normal but this is excessive. After a minute or so, everything smooths out. Again, all this happens very sporadically. It can be fine for a month and then it randomly acts up. And the CEL is never triggered.
Over time, I've replaced the battery, plugs, coils, air filter and ran fuel system cleaner. I've read about the cam & crank sensors on these cars having funky failures with similar symptoms so I've fired the parts cannon and now installed OEM Mando sensors.
Will monitor things but hopefully, this is a permanent fix .