Engine squeal on cold starts

[gaingreen09]

Hello everyone, this is my first post.My mom purchased a 2004 nissan pathfinder from a used car dealership about 6 months ago. Recently, the engine has been squealing very loudly on cold starts and goes away after the engine has warmed up enough. So far Ive replaced the power steering pump, idler pulley, alternator, fan clutch, and belt. However, this morning my mom told me it was squealing again. I have no idea what it could be now. From my research these were the most common causes of the problem but ive also read it could be the harmonic balancer or water pump. My dad told me when he removed the belt and started the truck the noise went away. It sounds like its coming from the passenger side so i dont think its the ac compressor or the other idler pulley.Any help would be greatly appreciated. Thanks

[skiski329]

You need to try to tighten the hell out of your belts. There's a few posts on here about tightening the belts. I'm on my mobile device, so let me know if you can't find it in search and I'll post a link in this thread

[Chuck Tribolet]

Yep, the belt needs to be tightened. Note that you have to loosen what clamps it in place, and then turn the jack screw to tighten,
then tighten the clamp again.

Chuck

[gaingreen09]

Thanks for the advice. I just tightened both belts as much as possible. Well see tommorow when the engine is cold again.

[gaingreen09]

So the noise is gone. Tightening the belt seemed to do the trick. I hope it stays this way this winter. Thanks again for the help.