Newby Questions

[PDSHO]

Hello, I have a 2013 Police Taurus with EB engine 135K mi.
The power seems strong, however sometimes I hear a squeal that sounds like a belt slipping at WOT. Not every time, no CEL.
I also sometimes think I hear air leaking at sporting throttle (not WOT) and hear a little poof of air when I let off the gas. Is that normal wastegate opening?
My only turbo experience is my stock 2007 LBZ Duramax, that seems to just spool up and down in a predictable way.
I have no experience with small twin turbos so go gentle on me!
Greg

[Jordan]

The squeal could be a belt slipping. Might check and see if it has decent tension on it. And when you hear a little poof of air after acceleration that is your wastegate opening. You are on it on that one!

[PDSHO]

I looked from the top and didn't see a belt, it must be accessible from underneath. I will check tomorrow.
Greg

[Jordan]

I am new to the cars as well so I am not sure where the squeal could be from. Someone should chime in I am assuming and let you know if there is anything to look at specifically.

[SHOdded]

Could be a belt slipping, but more likely bov/wastegate related.  Reason i say this is that some tunes can make the bov sound like geese honking - no joke.  You can log to see if you are losing boost perchance.  May be a broken seal contributing to the situation.

[SHO9987]

Hello, I have a 2013 Police Taurus with EB engine 135K mi.
The power seems strong, however sometimes I hear a squeal that sounds like a belt slipping at WOT. Not every time, no CEL.
I also sometimes think I hear air leaking at sporting throttle (not WOT) and hear a little poof of air when I let off the gas. Is that normal wastegate opening?
My only turbo experience is my stock 2007 LBZ Duramax, that seems to just spool up and down in a predictable way.
I have no experience with small twin turbos so go gentle on me!
Greg

I believe the belt is on the passenger side of the engine.  Maybe you can reach it by removing the passenger wheel and wheel well? Have some extra 1/4" screw tabs handy as it's sometimes hard to get them out without destroying them. It's on the bottom half of the engine so I'm not sure it can be reached from the top. 

The blow off valves normally recirculate air back into the intake track, I'm sure it's the same or similar on the interceptor too.  Even so, you can sometimes still hear them purging that air when you let off the throttle. 

As for the air leak in sporting mode, I'm not sure.   Could be a number of things.  Just double check all the hoses and clamps.  There are several hoses on top of the intake manifold that I think are part of the stock boost controller for these cars, sometimes they can pop off (for some reason ford didn't put clamps on them). 

[PDSHO]

I should trace all hoses and check for leaks.
One other thing I did was had a BG intake cleaning done at the same time my PTU was serviced.
I need to ride in another car with this drivetrain, and see if what I'm hearing is normal, maybe I'll go test drive one!!
Greg

[SHOdded]

Let us know what you find out

[ZSHO]

Is there any difference with the A/C on ?  Z

[Citationdoc]

I get this noise when the intercooler starts getting oil in it.  Purge the intercooler (there's a good description how on this forum). While you're at it, clean the MAP sensor and MAF sensor with APPROPRIATE cleaner.  Noise should go away and car will run WAY better