Mitchs07explorer
Well-Known Member
- Joined
- August 14, 2015
- Messages
- 459
- Reaction score
- 98
- Location
- Idaho
- City, State
- Meridian, Idaho
- Year, Model & Trim Level
- 97 XLT V8 AWD
07 XLT V6
My 07 4.0 xlt advance trac occasionally when it's hot out or I've been on a really dusty road will start an odd kind of squeal noise in the engine bay when sitting at idle but goes away when you tap the accelerator or start driving. I noticed this right around 100k mi, since then I've given her a tune up, spark plugs, spark plug wires, new belt, tensioner pulley and idler pulley, air filter, PCV valve. All the parts I used were Motorcraft aside from the air filter which was a K&N. Does anyone know of anything else that I should of replaced on the belt accessories that could cause a squeal. Its not a high pitched squeal or incredibly loud like what you'd expect from an engine belt slipping but it's loud enough to drown out the sound of the engine when it's occurring. I'm just not sure what else it could be. The new parts are tip top, there's plenty of tension on the belt. It hasn't done it in months but as it's getting hotter out I'm sure it will start doing it again and I'm hoping to have a better idea of where to look when it does occur again. Any pointers would be greatly appreciated