Ford Focus Radio Suppression Capacitor Replacement

Written By: Amin Sadessi
  • Comments: 3
Ford Focus Radio Suppression Capacitor Replacement

Difficulty

Moderate

Steps

8

Time Required

25 minutes

Introduction

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.

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    • Pop the hood of the 2007 Ford Focus using the pull lever under the steering wheel.

    • Secure the hood with the hood prop on the left side of the engine.

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    • To disconnect the battery follow steps 2-4.

    • Loosen the bracket with the wrench.

    • Remove the top cover.

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    • You should wear protective gloves and goggles/glasses when working with the battery.

    • Remove the negative cable (usually black in color and labeled - or "Negative" ) by turning the nut clockwise with the wrench.

    • Set the ground cables away from the battery to avoid electrocution.

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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.

    • Replace the anchor bolt if corroded.

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    • Unscrew the second anchor bolt that secures the metal mount.

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    • Detach the wiring harness by holding down the tab on the top of the clip.

    • 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.

Conclusion

Install the new capacitor by following the steps above in reverse order.

Author

Amin Sadessi

Member since: 28/04/17

194 Reputation

3 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

Lisa Jackson -

The wires on mine broke off completely and without the capacitor my focus won't even crank over at all..

miles goddard -

Just found out that one of the wires on mine is snapped off. Our car has been having the dash going in and out for a few weeks now. I was told to check the ground connection, but didn't look over on that side until today. This part is the only part that looks broken with wires.

zappy4 -