I was going to replace the Serp belt on my 2009 Hyundai Sonata and was having a difficult time finding instructions on how the best way is to do this....I know that there should be a tensioner pulley but i cant seem to find it....Ive looked around and there are no manuals or youtube videos that I have found so any advice would be appreciated...also any recomendations on a belt brand I have heard that goodyear Gatorbacks are probably the way to go. Thanks!
Hyundai Sonata Serp belt change
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I've had two experiences with the Goodyear belts. One was good (Dodge Dakota) and one was not (Acura MDX). The bad experience didn't include a failed belt, but the durometer of the belt or similar property must not have been right, because it flapped around bad when the A/C was on. It would rattle the tensioner quite a bit. With the stock belt back on it, it was fine. I recently put a Dayco Poly Rib W belt on it and that one is good, too. I put a Dayco Poly Rib W belt on our other car, and it's good on that one as well. Try a Dayco. They also did a really nice Q&A on here a few months ago; always good to support a forum supporter.
For belts, Gates is the way to go.
I just did one on my aunts 2003 Sonata V6 when I did the timing belt.
The tensioner design on the 2.7 is stupid. You need to remove the tensioner to take the belt off. I found the easiest way to get it was from the wheel wheel. The tensioner had a 3/8" square hole that you can stick a long ratchet in. You pull it down to release tension. Then you slip it off the idler pulley. Then you need to remove the tensioner with it's 2 12mm bolts. Reinstallation is the opposite of disassembly. But this was for the 2.7, the 4 Cylinder may be different. You can get free Hyundai service info at HMAService.com
You just need to register for an account.
I just did one on my aunts 2003 Sonata V6 when I did the timing belt.
The tensioner design on the 2.7 is stupid. You need to remove the tensioner to take the belt off. I found the easiest way to get it was from the wheel wheel. The tensioner had a 3/8" square hole that you can stick a long ratchet in. You pull it down to release tension. Then you slip it off the idler pulley. Then you need to remove the tensioner with it's 2 12mm bolts. Reinstallation is the opposite of disassembly. But this was for the 2.7, the 4 Cylinder may be different. You can get free Hyundai service info at HMAService.com
You just need to register for an account.
I recently did the belt on my Sonata. I used a Bando belt. It's made in Japan. I got it on ebay for cheap because it was private labeled for Federated Auto Parts.
There are DIY tutorials on Hyundai-Forums.
You need to jack up the car and take off the passenger wheel. There's a little panel you remove. I think it has two 10mm bolts. Then you use a wrench to loosen the tensioner so you can remove the old belt. If memory serves, it's 17mm. This made me wish I still had a long-pattern wrench set, as you need a long wrench. I just doubled-up two wrenches.
It's not too tough.
There are DIY tutorials on Hyundai-Forums.
You need to jack up the car and take off the passenger wheel. There's a little panel you remove. I think it has two 10mm bolts. Then you use a wrench to loosen the tensioner so you can remove the old belt. If memory serves, it's 17mm. This made me wish I still had a long-pattern wrench set, as you need a long wrench. I just doubled-up two wrenches.
It's not too tough.
yea I have a Kia Rondo with the same Theta 2.4 that is used in Hyundai cars as well. The Rondo design is based off of the Optima/Sonata designs.
I was thinking of doing my belt as it still has the original one on it and has 5 years and 68K under the belt (haha pun intended...)
It looks pretty daunting, not a lot of space there, but I will check for the access panel you guys speak of. Does anyone else replace the tensioner along with the belt when you do the job?
I was thinking of doing my belt as it still has the original one on it and has 5 years and 68K under the belt (haha pun intended...)
It looks pretty daunting, not a lot of space there, but I will check for the access panel you guys speak of. Does anyone else replace the tensioner along with the belt when you do the job?
Also, if you guys don't know, Hyundai and Kia make all their tech info/TSBs and service manuals available online for free to anyone. You just have to register for an account, which is free.
Here's the Hyundai site:
https://www.hyundaitechinfo.com/
Here's the Hyundai site:
https://www.hyundaitechinfo.com/
Thanks for all the info I knew i could count on you guys to help!
Originally Posted By: Hokiefyd
I've had two experiences with the Goodyear belts. One was good (Dodge Dakota) and one was not (Acura MDX). The bad experience didn't include a failed belt, but the durometer of the belt or similar property must not have been right, because it flapped around bad when the A/C was on. It would rattle the tensioner quite a bit. With the stock belt back on it, it was fine. I recently put a Dayco Poly Rib W belt on it and that one is good, too. I put a Dayco Poly Rib W belt on our other car, and it's good on that one as well. Try a Dayco. They also did a really nice Q&A on here a few months ago; always good to support a forum supporter.
Sorry to bump this from the dead, but I'm running into a belt sizing issue on a different application, so I looked up your 2005 MDX and this is what I found:
Dayco: 84"
Gates: 84.63"
Goodyear: 84.75"
I also looked up the serpentine belt for a Yaris, Accord and Elantra, and in all three applications, the Gates drive belt was 0.5" longer than the Dayco or Bando for the application.
I've had two experiences with the Goodyear belts. One was good (Dodge Dakota) and one was not (Acura MDX). The bad experience didn't include a failed belt, but the durometer of the belt or similar property must not have been right, because it flapped around bad when the A/C was on. It would rattle the tensioner quite a bit. With the stock belt back on it, it was fine. I recently put a Dayco Poly Rib W belt on it and that one is good, too. I put a Dayco Poly Rib W belt on our other car, and it's good on that one as well. Try a Dayco. They also did a really nice Q&A on here a few months ago; always good to support a forum supporter.
Sorry to bump this from the dead, but I'm running into a belt sizing issue on a different application, so I looked up your 2005 MDX and this is what I found:
Dayco: 84"
Gates: 84.63"
Goodyear: 84.75"
I also looked up the serpentine belt for a Yaris, Accord and Elantra, and in all three applications, the Gates drive belt was 0.5" longer than the Dayco or Bando for the application.
That is odd. As I recall from our discussion about CR-V drive belts, the Gates belt was 1/2" long there as well.
Interesting about the length of the Goodyear belt for our MDX...I didn't know it was nearly an inch longer than the Dayco belt. Perhaps that's why the Goodyear belt gave the tensioner problems, while it's fine with the Dayco belt.
Interesting about the length of the Goodyear belt for our MDX...I didn't know it was nearly an inch longer than the Dayco belt. Perhaps that's why the Goodyear belt gave the tensioner problems, while it's fine with the Dayco belt.
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