2009 Hyundai sonata V6 would cut out while being driven and then start back up if restarted almost immediately or after a few minutes.
Car engine was cutting out, it would jerk and then a few seconds after the jerk the engine went off like it was shut off by the driver, I'd turn it bank on and it would start back up instantly and still repeat fee minutes after, this happens regardless if i was idling in traffic or just have it on ti warm up in my garage.
So i got it scanned and it was a crankshaft code, replaced it and the same issue still persisted, prior to this a mechanic replaced the fuel pump and that wasn't it
Scanned it again and then it showed some CAMSHAFT code, i think P0011, they were changed and the random engine cut outs stopped, but this came with new problems, hard starting, and the car hesitated to move when i stepped on the gas, also would shake if in Drive D but in traffic (stationary) shaking would stop if engine ran and engaged in park P or i started to move, also the exhaust was shaking, not violently but it was
I took it back home feeling unsatisfied but then the next day i restarted it and it wouldn't start back up, what's weird now is i hear an usual sound while cranking the engine, i see the belts roll the accessories but it won't start up, this sound i speak of is around the head of the engine, i have a 2009 V6 Hyundai sonata, I'd appreciate your advice, I'm thinking the timing chain. now I have just the P0335 code and that's why I'm thinking the timing chain as the car has had the cold start rattle for a while, it's got about 120k miles on it..
That's right timing shane. Or some problem in the variable valve timing system. You were getting codes for the sensors but it's not the actual sensors that were the problem. The computer got bad data from them so it flags the sensors. But the sensors will give bad data if the timing chain or variable valve system has a problem because then the timing will be off physically and the data from the sensors will be wrong. You're either going to have to tear that engine down or give up with a car
Thank you very much Scotty, I'll get a mechanic to open it up, I was expecting to hear a terrible sound and engine seizing to confirm a bad or broken timing chain and since that didn't happen I was thinking what are the odds as I parked the car and shut it off myself.
I'll have a mechanic open it up and see if it can be fixed, hopefully since it didn't die on the highway while at some high speed the engine isn't damaged yet.
I'm surely not considering another Hyundai for a new car, it seems these older engines made in the early 2000s are the best of them all. Thank you, and I'll make sure to update the thread.