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Discussion Starter #1
I bought anew Hyundai Sante Fe sport either April or May of 2018. This past spring i got a recall notice for a knock sensor update. Brought it in for that, it's first inspection and i had a free oil change too. About 500 miles later i was on the interstate with the cruise on and it kicked the cruise off and started bucking and had a lot less power. Brought it in and they said it was common after the update and needed a new wiring harness. They gave me a loaner and they had it fixed in a few days. Today i was bringing the wife to work and it did the same thing and the weird part was it did it in the exact same place on the interstate. Brought it to the dealer when they opened, they gave me a loaner and said they would call if there was any major issues or when it was done. He just called and said the performed a test and the engine failed so they are replacing it. Just under 12k on the car! To me it just seemed like an electrical or fuel issue, no knocks, pings or any other noise, just a lack of power and felt like the throttle was cutting out. Not going to argue with a new engine though.....
 

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Grand Imperial Poobah
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Hyundai is trying to compete with Toyota in the area of quality. Hyundai wants their customers to be happy and keep coming back for their future vehicle(s). It doesn't surprise me Hyundai would replace an engine, in order to 'make it right'.
 

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The "new" engine may be a rebuilt core engine. It's less expensive to replace the engine with a rebuilt one.
 

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Probably was a engine related issue.
I worked on the service drive of a dealership for many years.
The manufacturer will not authorize a dealership to replace an engine without a lot of documentation.
The dealership is not going to do it without getting paid by the factory. Sometimes the factory will send out an inspector to make sure.
Also nothing wrong with a factory reman engine, other than the block most all the parts inside are new.
 

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Discussion Starter #6
Probably was a engine related issue.
I worked on the service drive of a dealership for many years.
The manufacturer will not authorize a dealership to replace an engine without a lot of documentation.
The dealership is not going to do it without getting paid by the factory. Sometimes the factory will send out an inspector to make sure.
Also nothing wrong with a factory reman engine, other than the block most all the parts inside are new.


Well it was in already for this problem that was supposed to be software/knock sensor update and then the wiring harness afterwards. I'm guessing it's a known problem because i had a phone call in just over an hour of dropping it off. First thing i asked was it going to be a new or reman engine and he said new. 100% covered. Also when it was in for the wiring harness they gave me a $250 voucher good for service and parts. Hyundai's service has always been top notch, never been a problem in the 10 years I've owned them....so far. Last one i had i drove for 9 years and the only thing that went wrong besides normal wear and tear parts was a coil. I like the idea of a new engine but i also don't like the idea of them tearing the car half apart. I just hope the mechanic working on it is as finicky as me when turning wrenches.
 

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i always treated a customers vehicle better than my own. The customer paid lot of money for that car and now they are trusting me to service/repair it.
 

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Discussion Starter #8
I just called the guy back to get a better explanation of what went wrong. I guess they have had problems with engines being slightly out of spec so they upgrade the knock sensor to make it more sensitive to hear engine noise we can;t hear so they can correct the problem before it totally fails. Then when i had the second problem it calls for changing a wiring harness that could go bad telling the new sensor it's hearing a noise that's not there. This time with the new harness it's saying there is a noise so i get a new engine. I also confirmed it's a new engine again just to make sure. sometimes i wish we could go back to big gas guzzling V-8's with carbs....
 

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Discussion Starter #10 (Edited)
A "knock" sensor? I haven't had any cars/trucks that didn't knock or click, or something. New cars are quite, gotta admit.

All the ones i have dealt with or heard of in the past check for when your engine is pre igniting fuel(sparks or diesels before engine hits top dead center) and you'll hear a pinging sound when you accelerate. They are supposed to tell the car to change the timing. The way this guy was describing this it as it listens to the bottom end of the engine for rod or main knocks. I don't know if this is something new or if i totally misunderstood him. I'm guessing that's what it is being i can't see changing a whole engine for a pre ignition problem that i would think could be fixed by changing the sensor, wiring, computer or just adjusting something. Like i said earlier i like older cars, you didn't need a laptop and a PHD to work on them...
 

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Discussion Starter #13
Got my car back yesterday! Engine wasn't supposed to even come in until Monday but i think they give you a later date in case they run into problems and if not you're happy it's done early. Talked ot the head service tech who i sort of know a little. I guess the knock sensors on these cars not only listen for pre ignition but also any and all odd noises and vibration inside the engine. The wiring harness problem is the first step. The old ones were routed in such a way that just the harness alone vibrating would kick the sensor so they replace it with a longer one routed a different way. When it does it again then they know something in the engine isnt right and they replace it. So now the warranty is reset on the long block and they added an extra 20k of mileage which is cool too but I'll still hit the 10 years before i hit the mileage anyway. Of course not super happy dealing with this on a car that is just over a year old but real happy with the service they have been giving to fix it.
 

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Grand Imperial Poobah
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Of course not super happy dealing with this on a car that is just over a year old but real happy with the service they have been giving to fix it.
Don't let it bother you, just be glad they made it right. Can you imagine how you would have been screwed over if it was a GM or Chrysler vehicle?

My Toyota pickup had a recall on the frame. Apparently the third-party supplier skimped on the type of steel to use in building the frame. Toyota basically told their supplier and the third-party supplier how the problem was to be fixed. They offered to buy back any pickup with a rusted out frame. Toyota paid 50% of the excellent retail value of the vehicle, their supplier paid 50% of the value and the third-party supplier paid 50% of the value. Yep, they paid the consumer 150% of the excellent retail value for their truck. People were buying up used Toyotas for a couple of thousand dollars and turning them in and getting paid tens of thousands. My truck was supposedly affected, but the frame on mine is solid.
 

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Discussion Starter #15
Don't let it bother you, just be glad they made it right. Can you imagine how you would have been screwed over if it was a GM or Chrysler vehicle?

My Toyota pickup had a recall on the frame. Apparently the third-party supplier skimped on the type of steel to use in building the frame. Toyota basically told their supplier and the third-party supplier how the problem was to be fixed. They offered to buy back any pickup with a rusted out frame. Toyota paid 50% of the excellent retail value of the vehicle, their supplier paid 50% of the value and the third-party supplier paid 50% of the value. Yep, they paid the consumer 150% of the excellent retail value for their truck. People were buying up used Toyotas for a couple of thousand dollars and turning them in and getting paid tens of thousands. My truck was supposedly affected, but the frame on mine is solid.


I met a friend of a friend who was the guy at our local Toyota who was the one who changed the frames on many trucks. This was several years ago and he was telling me the process of changing them out and i wan to say he could do two or three a week. if you opted for that you also got more than a new frame. You got all new brakes lines, fuel lines, some suspension parts, new body mounts and a few other things that attach to the frame. Some of that stuff like the lines are nearly impossible to remove and put on another vehicle without breaking stuff and the other stuff was just cheaper to replace than trying to switch out and have to replace a certain amount anyway.
 
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