iFixit - Answers With Device "1998-2004 Ford Focus"

1998-2004 Ford Focus: 2003 Ford Focus no acceleration

Sat, 24 Aug 2024 12:55:33 -0700

My missus's trusty 03 Focus has developed a rather bad problem, she was coming back from the shops this morning and it started to die on her, she managed to get it back home and i took it for a drive, It idles fine and revs in neutral no problem and when initially accelerating off it seems OK but after driving for half a k or so when trying to accelerate it just dies, still idles fine, doesn't cut out at all but just no acceleration, I could sort of idle home but give it any revs it just dies back, not cutting out just very weak acceleration, Also I'm pretty sure i can hear some pinking that was never there before.

⟐ Answered August 24, 2024 at 12:55 MST

1998-2004 Ford Focus: 2004 Ford Focus Radio problems...

Sat, 14 Jun 2025 04:43:48 -0700

Hello...I was driving down the road with radio on in my 2004 Ford Focus and it just stopped working. The clock (which is part of the radio) still works but can't get radio to work anymore. Could this most likely be a fuse? Is the fuse for the radio under the dash? Which one is the right fuse?

Thank you so much.

⟐ Answer accepted June 14, 2025 at 4:43 MST

1998-2004 Ford Focus: Vacuum actuator pipe diagram

Wed, 20 Mar 2024 18:02:59 -0700

Need help my vacuum pipes are all taken out need diagram to put it back in correct order

⟐ Commented March 20, 2024 at 18:02 MST

1998-2004 Ford Focus: Have a 2001 ford focus zx3 2.0l dohc idles rough, high idle misfires.

Fri, 11 Dec 2020 00:28:18 -0700

Was told it could be the spark plugs needed replacing, so i went ahead and did a tune up. Changed all filters, spark plugs and cables, ignition coil pack and changed the oil about 2 weeks ago. But a couple of days before i did the tune up the serpentine belt snapped(it snapped while driving)so I replaced it and idler pulley. Then did the tune up. Still misfires and idles rough and high idle. Still no check engine light. What could it be?

⟐ Answered December 11, 2020 at 0:28 MST

1998-2004 Ford Focus: brake warning light stays on

Sun, 23 Sep 2018 17:24:15 -0700

my brake warning light stays on cleaned terminals

⟐ Commented September 23, 2018 at 17:24 MST

1998-2004 Ford Focus: Car radio wiring problem

Mon, 10 Dec 2018 05:50:04 -0700

I'm having a really hard time with this. I have an 04 Ford focus zx5 and it had a stock sub and amp wire to the back which both are gone now so I've been trying to figure out how to wire a new sub and amp through them and a new stereo deck which is an ouku 7inch touchscreen/DVD receiver and I know you guys probably already answered it somewhere in your website but I'm going to throw out these wire schematics and see if you can help I have a

Dark grey with black stripe thick

Light grey with white stripe thick

White with red stripe thick

Dark grey with red stripe thick

White with purple stripe thick

Dark grey thick

Black with green stripe thick

white with black stripe thick

white thick

Orange with black stripe thick

Orange with black stripe thin

I believe this is black with yellow stripes thin

White with green stripe thin

Then these two wires wrapped in what looks like tin foil that's coming from where my sub and amp are going to the deck it's a grey with black wire thin and then white with black stripes thin

Then white with red stripes thin then I have this thick black with blue stripe That's going to me sub and amp that starts out as one big black with blue stop and splices out to two

Then on a o u k u wiring harness I have the ACC red wire the black ground wire the battery yellow wire then the brown i l l u m i wire than ant-VCC blue wire then in oranges looking wired and I'm not sure what it is and also a gray with a black stripe wire if somebody could help me out with this this would be super cool thanks for your time

⟐ Answer accepted December 10, 2018 at 5:50 MST

1998-2004 Ford Focus: bypass pat in 2002 ford focus

Mon, 02 Dec 2019 11:41:45 -0700

how do i bypass the pat system in a 2002 ford focus i have removed the key switch because it locked up and wouldn't turn

⟐ Answered December 02, 2019 at 11:41 MST

1998-2004 Ford Focus: battery polarity for 1998 ford focus

Mon, 21 May 2018 00:48:21 -0700

i need to know what the polarirty is for my ford focus

⟐ Commented May 21, 2018 at 0:48 MST

1998-2004 Ford Focus: Why does it smell like oil when braking?

Mon, 22 May 2023 08:22:17 -0700

Whenever I brake hard, it starts to smell of oil. Any thoughts as to why this might happen?

⟐ Answer accepted May 22, 2023 at 8:22 MST

1998-2004 Ford Focus: Why is my car idling too fast?

Sat, 20 May 2023 15:50:22 -0700

Engine idling too fast have checked hoses and air intake.

⟐ Answered May 20, 2023 at 15:50 MST

1998-2004 Ford Focus: Error code P0401 Exhaust Gas Recirculation "A" Flow Insufficient Detec

Mon, 31 Oct 2022 13:02:03 -0700

I have problem with Exhaust Gas Recirculation "A" Flow Insufficient Detected P0401

⟐ Answered October 31, 2022 at 13:02 MST

1998-2004 Ford Focus: No power catalytic converter?

Sun, 03 Jan 2021 03:35:46 -0700

Hi my problem started with warning light saying gas cap not on right I repleaced the gas cap well my car started running real ruff won't climb hills and such well I drilled a couple holes in my catalytic converter helped a lil mayb. So now I'm thinking of removing the cat converter and replacing with a pipe or flex pipe there r 3 wires on the cat are those 2 oxygine sensors and a groind and if I did this what do I do with those wires and PS this is the wife of the man doin all this work in just trying to help him out so b nice on all my car lingo cause I dont know jack about cars ty

⟐ Answered January 03, 2021 at 3:35 MST

1998-2004 Ford Focus: Why is my car smoking?

Sat, 23 May 2020 06:29:44 -0700

I topped off fluids on my 01 focus zx3 …then I see tons of smoke in the rear window every time I step on the gas. What did I do wrong??

⟐ Answered May 23, 2020 at 6:29 MST

1998-2004 Ford Focus: How much torqe I can used for my car assemled?

Sat, 07 Mar 2020 14:05:07 -0700

how much torque i can used for my car assembled ?

⟐ Answered March 07, 2020 at 14:05 MST

1998-2004 Ford Focus: How to put shaft back in ignition housing so I can put ignition barrel

Sun, 22 Sep 2019 03:55:42 -0700

How to aline the shaft on ignition housing to aline with the ignition barrel

⟐ Answered September 22, 2019 at 3:55 MST

1998-2004 Ford Focus: Where is the vent valve located?

Mon, 08 Oct 2018 08:39:32 -0700

Where is the vent valve located?

⟐ Answer accepted October 08, 2018 at 8:39 MST

1998-2004 Ford Focus: 2001 ford focus five speed - Why does my clutch keeping slipping

Thu, 07 Sep 2017 22:20:31 -0700

every time I press the gas pedal it slips out of gear

⟐ Answered September 07, 2017 at 22:20 MST

1998-2004 Ford Focus: What tools do I need to change front brakes

Fri, 23 Dec 2016 09:19:54 -0700

what tools do i need to change front brakes

⟐ Answered December 23, 2016 at 9:19 MST

1998-2004 Ford Focus: How do I fix the clutch adustment on ford focus

Sat, 10 Dec 2016 05:46:41 -0700

how to fix clutch on ford focus

⟐ Answer accepted December 10, 2016 at 5:46 MST

1998-2004 Ford Focus: Leaking coolant right below where you pour it in.

Fri, 23 Jan 2026 21:39:05 -0700

Leaking coolant when pouring it in. Drips right below the manifold from off a single metal pipe that shoots straight back towards the firewall. Its located on the left hand side.

⟐ Commented January 23, 2026 at 21:39 MST