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View Full Version : High pitch whistling sound at the rear of S13 hatchie

corry29
03-13-2011, 03:22 AM
I'm hearing this high pitch squealing/whistling sound when I turn the car on,

I only noticed it when I gutted out the back and put down the rear seats (keeping my eye on the trunk leak), I can hear it when I'm driving that its coming from the rear and under the trunk, I can also hear it from outside too (not sitting in the car).

My friend said its the fuel pump, but I just got it replaced, and its still making that sound.
I'm just wondering, is it normal for it to always make that sound?

I hope someone can help!
mitcheyismyname
03-13-2011, 03:36 AM
yeah its the fuel pump operating normally. no need to worry. but i did get annoyed so i put my interior all back.
corry29
03-13-2011, 08:37 PM
yeah its the fuel pump operating normally. no need to worry. but i did get annoyed so i put my interior all back.

But I'm also hearing this high pitch sound from outside too? Are you sure its normal?
corry29
03-18-2011, 10:55 AM
But I'm also hearing this high pitch sound from outside too? Are you sure its normal?

Any other insights?
Pro ViZIon
03-18-2011, 11:42 AM
Is this when driving or just when its sitting there?
corry29
03-18-2011, 08:22 PM
Is this when driving or just when its sitting there?

Its when its driving and when it sits there, basically when its on,

I know the sound is still there when I'm driving, because I can hear it when the back seats are down.
Sileighty_85
03-18-2011, 09:45 PM
What fuel pump is it?

If its a Walbro, then its def normal
Pro ViZIon
03-19-2011, 12:03 AM
Yeah walbros are definately loud. I have one is my rx7.

If it was only when driving though I was going to say the differential.
rollout240
03-19-2011, 12:14 AM
Yeah walbros are definately loud. I have one is my rx7.

If it was only when driving though I was going to say the differential.

i was going to say diff. too. but since you said you can hear it when its idling then maybe your fule pump. i have a walbro and to be honest havent heard it making this sound to be that loud as expressed. open your trunk and put your ear to the pump. maybe you can pin point where the sound is coming from.

good luck. let us know whats up.
Sileighty_85
03-19-2011, 09:14 AM
well walbro are audible from the out side but one thing that will make them scream is a dirty pick up filter
Pro ViZIon
03-19-2011, 12:43 PM
+1 on dirty pick-up.