Ford Focus Radio Suppression Capacitor Replacement
Amin Sadessi and 5 other contributors
Last updated on Sep 5, 2021
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Introduction
Go to step 1 ↓We will demonstrate how to remove the radio suppression capacitor in a 2007 Ford Focus and replace it with a new capacitor by using a ratcheting screwdriver and 8mm nut driver attachment.
The radio suppression capacitor acts as a noise barrier as it dampens engine noise in the cabin of the vehicle. However, sometimes the wire in the capacitor corrodes and fails to dampen noise from the engine. Additionally, the wire may come loose, blowing fuses or even the battery.
What you need
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Pop the hood of the 2007 Ford Focus using the pull lever under the steering wheel.
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Secure the hood with the hood prop on the left side of the engine.
Ask FixBot
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To disconnect the battery follow steps 2-4.
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Loosen the bracket with the wrench.
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Remove the top cover.
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Remove the negative cable (usually black in color and labeled - or "Negative" ) by turning the nut clockwise with the wrench.
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Remove the positive cable (usually red in color and labeled with + or "Positive")by turning the nut clockwise with the wrench.
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Unscrew the first anchor bolt that attaches the metal clip to the engine mount.
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Detach the wiring harness by holding down the tab on the top of the clip.
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Pull apart.
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Obtain the new capacitor and reattach it by reversing the same steps you followed to disconnect the old capacitor.
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Install the new capacitor by following the steps above in reverse order.
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Team
UC Davis, Team S1-G6, Coad Spring 2017 Member of UC Davis, Team S1-G6, Coad Spring 2017
UCD-COAD-S17S1G6
3 Members
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3 Guide Comments
Do I have to have this part as it keeps arcing on the body or frame of my car and shorten out my ignition fuse. So do I have to have this part because I noticed when I unplugged it my car cranked up and ran because I forgot to plug it back in. How long can I run without it and what damage does it do? Because I know it has to do with the radio interference with within the steering wheel or something like that and I have no radio so I don't know if that matters
The wires on mine broke off completely and without the capacitor my focus won't even crank over at all..
