Hello. I have a 2006 Suzuki Reno, she had her full checkup and timing belt replacement not too long ago at 60k, she is currently at 83k miles now. Here recently she had her radiator completely replaced but I can't remember if the rattle on startup was before or after the radiator she only rattles when she sits for a long while mostly in the morning and rarely for the rest of the day. The rattle lasts for anywhere between 2-5 seconds and only 4 sessions so far where she has gone longer. I was told my timing belt tensioner or it could be my other belts tensioner, I am really stressed as to which one it might be, she is not driven rough and never had any issues until this year. Any ideas on what this might be? Just need a good answer so I know how much money I need to cough out.