What is the replacement schedule for 2006 hyudai sonata timing belt

Watch the video. Also this engine has a timing belt not chain. You must replace the pulleys, the timing belt and the water pump when doing this service
Hyundai Timing Belt

www.hyundaitechinfo.com and make a free account and logon. You can see all the info that the mechanics use. The site is hard to use though.

The actual speedo head in dash. Try to disconnect battery for 30 mins. Can reset unit , make sure you have radio code fist.

Ideally it will be good to replace the timing belts before the car clocks 90000kms. The schedules for all the services are detailed in the manual but it will always be good not to delay . Good day

Yes, the timing belt, spark plugs and spark plug wires, fuel filter, O2 sensor/s, a transmission service too.

if the belt fails it could ruin the engine
internal parts could clash

It is 60 thousand for recommended swap but, there is a slight window. You can stretch it between 60 to 75 thousand.

Most car manufacturers recommend replacing timing belts after 60,000 miles. I have seen cars go 200,000 on a timing belt. But I wouldn't recommend that. Personally, that Max I would go, even if 99% of your driving is highway, is 80,000 miles. I'm not 100% sure about the sonata, but if it is front wheel drive and your replacing the timing belt, think about replacing the water pump at the same time. That is always good practice to remember.

it sounds like your idle air control valve or your trottle postion sensor is giveing you trouble you might have the codes ran and see what it pulls up.

Its a chain located inside the engine itself, you have to take the engine cover off to get to it.