Report: Improved Timing Chain Tensioners Available to Correct Noise on Startup
Hyundai Sonata Problem
Engines Affected: 2.4L 4 Cylinder, 3.3L V6
Average Mileage: 64,188 mi (20,000 mi - 132,000 mi)
If you experience excessive engine noise on startup (after the engine has been turned off for several hours) that lasts for more than five or six seconds, turn off the engine and check that the engine oil level is correct. If the oil level is correct, the noise may be caused by the timing chain tensioner. Hyundai has an improved tensioner to correct this problem.
Visitor, 2010 Hyundai Sonata, 2.4L 4 Cylinder, 63,000 mi
Timing chain tensioner noise since 20k miles, took in dealer said 'normal'. Now it is much worse, taking it back and going to insist on the tensioner being replaced under my extended warranty. Is there any TSB number or document I can print out for the dealer to deflect the standard 'I don't want to do it' crap?
Rattle for about 10 seconds after cold sturt up and every start after sitting for 10 minutes or long.
Visitor, 2006 Hyundai Sonata, 2.4L 4 Cylinder, 132,000 mi
knocking sound on engine area, sounds like tming chain of lifters.
Visitor, 2006 Hyundai Sonata, 3.3L V6, 40,000 mi
Our 2006 Sonata with 3.3 L engine has been makiing this noise for over a year. Was told last year that it had to make the noise for longer than 15 seconds before they fixed it. Did my own oil change last fall and found a lot shiny metal particals in drain pan. Mentioned this to dealer in December and was told the same thing as last year. Contacted Hyundai direct and was told it should be fixed as it is "under warranty". Taking it to dealer this Thursday (1/24) for them to check it out. We'll see what they say then.
Visitor, 2009 Hyundai Sonata, 3.3L V6, 20,000 mi
Engine Clatter on startup.
Visitor, 2008 Hyundai Sonata, 3.3L V6, 124,000 mi
Timing belt tensor broke and caused damage
Visitor, 2006 Hyundai Sonata
I currently have this now and the closest Hyundai dealership to my home which is about 50 miles away says it's the timing chain tensioner and it will cost $1,500 to fix. I know there is NO WAY I could fix this myself. A mechanic I know did tell me before trying that, to try flushing the engine before having the chain tensioner replaced.
Visitor, 2007 Hyundai Sonata, 3.3L V6, 21,000 mi
I had this issue upon start-up several years ago. This was fixed under warranty and I have not had an issue since.
Visitor, 2010 Hyundai Sonata, 2.4L 4 Cylinder
noise on startup. sounds like timing chain lose.
Visitor, 2008 Hyundai Sonata, 3.3L V6, 37,600 mi
excessive engine noise at cold start up,have not had it fixed as of yet