Hissing/Whistling noise from the engine.

[rollingshi59]

Hello guys, I am looking for some help to figure out where the hissing/whistling noise is coming from my 17 GT with FRPP3, and this hissing/whistling noise is not constant but follows the exhaust note. I will be taking to the dealership soon, but every time when I take my car in, all they say is that the car is normal, so would be wonderful if I can get some help before I take in the car to the dealership.
Appreciate it a lot!
Here is a link to the sound.
[ame]

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[s550_GT]

post a video

 

[rollingshi59]

post a video

Hey man, I just posted the link. Would be great if you can check it out.

 

[Frenchy480]

Could be the ac evaporator going bad. A couple months ago, I started developing a similarly described sound. After going back and forth with ford for a couple weeks, sound got worse, followed by warm air on the driver side and cold air on the pass side with ac on. Took it back in, found out the ac evaporator went bad. 13000 miles and had to rip the dash out to fix it. Luckily covered by warranty. 1000 miles later and I'm starting to get the sound again. Ugh. Apparently it's a common problem. Hope that's not your case but who knows.

 

[rollingshi59]

Could be the ac evaporator going bad. A couple months ago, I started developing a similarly described sound. After going back and forth with ford for a couple weeks, sound got worse, followed by warm air on the driver side and cold air on the pass side with ac on. Took it back in, found out the ac evaporator went bad. 13000 miles and had to rip the dash out to fix it. Luckily covered by warranty. 1000 miles later and I'm starting to get the sound again. Ugh. Apparently it's a common problem. Hope that's not your case but who knows.

Thank you for your input! I hope its something simple issue and not related to the engine

 

[mbeale68]

Try turning he ac on and off and see if the noise goes away when it is off.

 

[Frenchy480]

Try turning he ac on and off and see if the noise goes away when it is off.

Yeah, I forgot to mention that part lol when my evaporator went out, it would only make that noise when the ac was on. It also sounded like it was coming from my engine too like yours. Definitely not saying that's what's going on with your car, but sounds very similar to what happened with mine.

 

[rollingshi59]

Try turning he ac on and off and see if the noise goes away when it is off.

The video clip was taken with the ac off already, I tried with power off, but I still can hear them.

 

[rollingshi59]

Yeah, I forgot to mention that part lol when my evaporator went out, it would only make that noise when the ac was on. It also sounded like it was coming from my engine too like yours. Definitely not saying that's what's going on with your car, but sounds very similar to what happened with mine.

Unfortunately, the pinging noise is still happening even with the power off when no air is coming in at all.

 

[smann]

Whistle could be the air intake.. Also follows exhaust note.. Higher revs more air pulled in; whistle?
My car whistles too when I use to have just a CAI and tune.

 

[Albertcado]

Unfortunately, the pinging noise is still happening even with the power off when no air is coming in at all.

Did you ever take this to the dealership or get it figured out?

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