Silver & Black

Hi all

2009 5.4L 32,000 miles FX4

I am I experiencing a squeal in my 5.4 over the last couple of days. I hear it while in park, acceleration, and in between gear changes. After accelerating it will stop for a moment, but again, it does it when the truck is parked, so it's not just a throttle issue.

I have purchased the extended warranty but I don't know if that will cover this, or at least having it looked at. I've searched threads but I can't find something quite like what I'm experiencing.

Anyone know what this could be? Thanks!

Silver & Black

Maybe if my truck had fuel hostages, Terra grapplers, and HIDs I would get a response?

506Murphy

Oh snap! I also have a 5.4 but have no clue what would be your problem. The only thing remotely close is the high pitch squeal sound I hear in the winter when the truck has sat over night in the freezing cold. Lasts only 30-60 sec and is gone or I just remember to plug it in and all is well. Not the answer you're looking for I know. Good luck bro sorry for the lack of love, at least no one has told you to trade it in on an Eco yet :/

agojeda82

Probably haven't gotten a response because of you avatar.

XtraLargeTall

Check the belt? Seems stupid but mine was doing the same and it was the belt.

Silver & Black

Haha, you either love them or hate them!

09_XLT

I'd love to be able to help out a fellow flareside owner, but, with 44,000 on the clock, I have yet to have an issue.

The only thing I can think of that sometimes gives a whistle is an exhaust leak at the manifold. Or possibly a head gasket. Neither is good to have, but that's what I would look for.

PS: I'll be posting more pics soon with my new tires that I had put on a week ago.

smurfs_of_war

This^ air leak. Check your inlet tube all the way to the throttle body and look for cracked vacuum lines.

Is it a whine, or a whistle though? Check the alternator too- water in it can make it squeal like a stuck pig until you tear it down and rebuild it.

Silver & Black

I think more of a whine than a whistle. I haven't lost performance, but this is happening whether its 30 degrees or 65 degrees too if that helps.

I've never had to take anything to a dealer for repair. Will they charge me to just listen and look?

I was fearing a head gasket, just didn't want to hear it from someone else. what would that run me for a repair?

09_XLT

Another thing I just thought of is the power steering pump. My wife's Honda Pilot had this horrible whine that changed pitch with the throttle and when turning the steering wheel.

It made more noise, the colder the outside temp got. (fluid got thicker) But it was still always there, at all temperatures.