I get either a whistling noise or steady squeal on acceleration. It's a 3.5 v6 Kia Sorento. Had it in for new harmonic balancer and belts but did not cure the problem. Any ideas?

Asked by May 10, 2012 at 12:11 PM about the 2006 Kia Sorento LX 4WD

Question type: Maintenance & Repair

6 Answers

12,945

Check your belt tension-er. Belt should be tight. Does the noise change depending on how much load you have on the alternator?

1 of 1 people found this helpful.

I haven't gotten into it myself. I had local mechanics do the work. So far all new belts and harmonic balancer. They did the adjustment on belt tension. Still same noise as before new parts. The sound it makes is like between a dry pulley bearing and the whine of a turbo charger. It only makes the noise under load/acceleration. I'm tempted to remove ALL belts and take a quick ride to rule out pulleys. No noise then it's a pulley bearing. Still noise then it's $$$$$$$.

12,945

That is a good idea. Another thing to look at is vacuum leak or exhaust leak. These two change with acceleration.......

2 of 2 people found this helpful.
3,640

many of the 3.5 sorentos have a high pitched whistle that comes from the intake plenum. kia isssued a voluntary campaign to replace this part. have you had the campaign done on it? any kia dealer can tell you if theres an open campaign on your vehicle. all they need is your vin nnumber

5 of 5 people found this helpful.

I have a KIA Soul 2010 and it just started whistling like this. I took it by the dealership and they want me to bring it in for check up. At first glance, the mechanic told me it could be the timing chain. When I look up the symptoms of the timing chain, it is nothing like I am describing. Any ideas?

i have a 2005 kia sedona lx been in and out of shops i got tired of all the shop bills and issues not being fixxed so i have my moms boyfriend do work on my vehicale seems he is great at it ended up finding the real problem was head gaskets and heads so replaced them then a tensioner pully oil changes spark plugs and cables and injectors and much more been doing fine well now moms boyfriend out of town i started up my van and its making a loud noise sound like something is hitting something or flapping the fly wheel been check, the oil pump been checked, and still loud really loud noise still there could barrings from the crankshaft pully cause this because the van is driving and not over heating makes sound when idles or in reverse or stopped

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