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-   -   Noises at 3k rpm (https://www.focusfanatics.com/forum/general-technical-chat/572801-noises-3k-rpm.html)

tjboston5676 05-29-2015 04:28 PM

Noises at 3k rpm
 
When my svt gets to 3000 rpm there's a spinning grinding type noise coming from the engine and it goes away around 3200-3500 rpm and it only occurs the moment you hit 3000. No matter if you are parked driving or whatever it can be heard at 3000 rpm every time and last until 3200-3500 and goes away. Anyone know what this might be?

edit: video added
http://i318.photobucket.com/albums/m...pshkq8ujih.mp4

felixthecat 05-29-2015 06:02 PM

Open up the hood & run the motor up to 3000 & see if you can pin point it. Kind of funny it goes away above 3000, thou.

tjboston5676 05-29-2015 11:17 PM

ive tried to pinpoint it and cant figure it out. seems to come from the around the transmission area though but hard to tell

tjboston5676 05-31-2015 01:01 AM

any ideas anyone? ill try to get a video up soon

amc49 05-31-2015 03:05 AM

Look at your mounts............could be a harmonic issue.

tjboston5676 06-01-2015 12:54 AM

didnt think about that, they are all three poly mounts. ill have to check that out, that actually sounds reasonable as to why only in a certain rpm

tjboston5676 06-29-2015 11:51 PM

from under the car it sounds like its coming from the intake area? its definitely in the rear of the engine though. it is not engine mounts, and also underneath the sound is way worse it honestly sounds like the engine could fall apart. i will have a video up as soon as it clears photobucket

amc49 06-30-2015 04:33 AM

Harmonic means that the mount can fail to damp vibration that can then rattle parts all over the cars, back of engine is a very common place to seem to come from. If that, engine mount still often fixes it.

Could be something rattling at intake too.

sleepyboy 06-30-2015 05:03 AM

Most likely it's a exhaust shield rattling from breaking off it's mounts. It was a known issue back in the day and numerous SVT ended up at the dealer for a noise when all it was is the heat shield on the cats and exhaust rusting and breaking loose.

amc49 06-30-2015 05:24 AM

X2 to that one.............


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