squealing at startup getting worse!
I have been having the same problem, and am wondering if anyone else has found the source. Here is a little background about how far mine goes back and how the mechanics are a little stumped. I have a 2007 Corolla S. New Serpentine belt, hydraulic tensioner, and water pump.
About 6 months ago, this was occurring- when it was doing it constantly, I took it in. They replaced the serpentine belt and the hydraulic tensioner for the belt. This solved the problem..... for about 5 months.
It then started up again, and it has been squealing at startup for about a month now. A few weeks ago it got worse and very constant- before that it was intermittent. At that point I took it in and they replaced the water pump. They said that when they took the water pump off, the bearing on the pulley was squeaking, and verified it when they tok it off. The NEXT day, it was still doing it. So they replaced the water pump again saying it was faulty, and also replaced the serpentine belt.
It kinda fixed it..... for about 2 days. At that point it started up again, but only for a minute or 2. Unfortunately, I had already begun my 2000 mile road trip, so I hoped that it would continue to not be a huge deal.
This was last week, and over the course of the week, it has gotten worse. It now squeals for about 10-15 minutes, not just at idle, and at a faster rate. At first, once I accelerate to a faster speed, it cancels out the idle squeal, and eventually stops at all speeds. Also, If I put it in neutral after a little bit it will stop squealing, until I put it back into drive, in which it will start up again. I tok it in a few days ago, and they were stumped. They want it back again with more time.
I am going to be taking it back in to the mechanics when I have a few days off so they can have more time, but in the meantime, I was hoping one of you would be able to shed some light on the situation.
I hope I have explained it enough to get a grasp on the situation. If you have any questions, please feel free to ask, and I hope any of you can help!
TL;DR- 6 months ago- squealing at startup. serp belt and tensioner replaced- fixed issue completely. 2 weeks ago issue came back- water pump and serp belt replaced (water pump replaced twice)-- still squealing at startup. Fixed issue for about 2 days, but it came back with a passion.