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Discussion Starter #1
I have an 03 focus svt. I just hit 50, 000 if it matters. But today after going to drive my car, I started it and noticed a sound under my batter/fuse box. It sounded like a motor was grinding or whining. Kinda reminded me of the windshield washer motor running or somthing. When I tried to turn it on, it made a different sound, so I eliminated that sound. Then I tried my steering box, my transmission, clutch, and lastly my engine (reving up and down) but nothing changed that sound. Can anyone help me pinpoint what this sound is so that I can figure out what is dying so that I can attept to fix it? Please help. Thanks....


-bryce
Indianapolis, IN
 

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DSI maybe?
 

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Can you describe the noise better? Is it a rattling, a knocking, etc.? Have you got out of the car and listened externally, to see if you can pinpoint where it's coming from?

Is the car running 'normally', even with the noise...any noticeable degradation in performance?

More clues/info would help everyone here.

Cheers, Shane
 

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I call DSI
 

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Titular Wit Here
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DSI. Sound doesn't change no matter what the engine revs are, and it only makes the sound when the car is turned on, right? DSI. Do a search of the forums and you will see.
 

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DSI actuator. Either your cable broke or it's attachment clip on the manifold broke (common problem). The actuator is right under your DS headlight. The attachment clip on the manifold is approx. under the throttle body.

Ford doesn't offer a simple fix - they replace the entire manifold. Will be expensive.

There are aftermarket billet clip attachments available - do a search.
 

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Discussion Starter #10
well the car is off but key is on, it doesn't make the noise. When turned over the sounds start bellowing out of the lower section under the battery/fuse box area. It sounds like a grinding of a motor. But it doesn't sound like anything I am used to working on. Normally if I heard this sound, I would head towards the little motor in the windshield wiper resivor, but it wasn't that. I was going to remove the battery box and the air box here in a bit to try and locate the problem directly.

On the other hand, what is this DSI? I haven't ever heard of it before? Does this cause damage to my engine or drivability? How or what can I do to fix or replace it?
 

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Look under the car, on the drivers side framerail, behind the headlight and you will see a box with wires going into it and a cable coming out. Unplug the wires from it and see if it still makes the noise. If that eliminates the noise, then you have a DSI problem.
 

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Do what he ^^^^^ said
 

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DSI - Dual Stage Intake or also called the IMRC - Intake Manifold Runner Control

The SVT has variable length intake runners - mechanically actuated by a cable which is controlled by a electric motor.
 

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The Librarian
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The IMRC is right underneath the battery.
http://www.focusfanatics.com/forum/showthread.php?s=&threadid=89223
http://www.focusfanatics.com/forum/showthread.php?s=&threadid=80441
http://www.focusfanatics.com/forum/showthread.php?s=&threadid=61607

The IMRC controls the DSI via a cable.
http://www.focusfanatics.com/forum/showthread.php?s=&threadid=56157
http://www.focusfanatics.com/forum/showthread.php?threadid=24840
http://www.focusfanatics.com/forum/showthread.php?s=&threadid=19079

1) If the cable or clip broke at the DSI switch located underneath the TB on the intake manifold, it will cause this noise.

2) If the IMRC goes bad, you'll also get this noise.
The gears wear out, and it won't properly move the cable anymore and continually cycles, causing the grinding noise.
 
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