Cadillac STS-V Series ForumForum specifically for Cadillac STS-V series discussions. With 469 horsepower, this is the most powerful production Cadillac ever made.
Cadillac Forums: Engine rattle when starting normal?
Hey guys!
I recently bought a certified pre-owned 2006 STS-V and when I start it each morning or after is has set for a few hours, the engine has a rattling/clattering sound when I start it. It lasts for about 1 second when starting and reminds me of the sound of diesel car cranking up. I left it overnight at the Cadillac dealer I purchased it from and they said it was normal and it was just the oil going up into the supercharger. It just doesn't sound normal to me so I was wondering if any of you have experienced the same noise. If not, should I take it to another dealer and have it checked out?
Thanks!
Loose heat shield, 02 sensor, etc? Like others have said should not be there, find a different dealership if they aren't competent enough to put it on a lift and find out where the rattle is coming from.
I am going to take it to a different dealership. I can't see what oil filter it currently has on, but I would assume that since it was certified by the dealership they would've changed the oil there and put on the correct oil filter. But who knows. The oil filter should be an acdelco PF26 is that right? This noise is not normal and it doesn't take a a rocket scientist to figure that one out. I will take it to the other dealership in town and see what they say about it.
Thanks for your help!
I am going to take it to a different dealership. I can't see what oil filter it currently has on, but I would assume that since it was certified by the dealership they would've changed the oil there and put on the correct oil filter. But who knows. The oil filter should be an acdelco PF26 is that right? This noise is not normal and it doesn't take a a rocket scientist to figure that one out. I will take it to the other dealership in town and see what they say about it.
Thanks for your help!
Jen
try to find a dealership that has another stsv there..then maybe they can start that one for you and see..
mine started making the same noise when it only had 200 miles on it, it was the resonator/muffler at the x pipe in the exhaust.
i paid the difference between the stock exhaust(under warranty), and the performance exhaust and now have more power and a cool exhaust.(be careful, it's LOUD)
I took the car to another local dealer. They called and said after consulting with their "technical advisors" they believe the clatter is being caused by a bad lifter. So they are going to replace the lifters on it. They had to order the parts and will call me when they come in. Hopefully this will fix it.
