iFixit - Answers With Device "2004-2008 Ford F-150"

2004-2008 Ford F-150: won't start turns over but won't start

Sat, 22 Feb 2020 16:16:08 -0700

Turns over but won't start

⟐ Commented February 22, 2020 at 16:16 MST

2004-2008 Ford F-150: Why does seat belt not latch?

Wed, 13 Nov 2019 10:18:45 -0700

Seat belt won't latch

⟐ Commented November 13, 2019 at 10:18 MST

2004-2008 Ford F-150: What type of oil for oil change

Thu, 19 Oct 2023 06:53:23 -0700

Oil and filter recommendations

⟐ Answer accepted October 19, 2023 at 6:53 MST

2004-2008 Ford F-150: Bearing-like Noise that has caused me to change transmission 3 times

Sun, 25 Aug 2019 08:35:42 -0700

2005 F-150 LARIAT TRINTON 5,4L V8 Automatic 4x4: I have this noise that sounds like a really bad bearing sound that hasn’t been able to be detected by over 5 mechanics and has caused us to dismantle 3 fresh transmissions without success - Sound occurs first starting after 7 minutes, reduces while driving. I can upload the sound recording if i have an avenue to. I really need your help as i have spent thousands of $USD to no avail! Thanks a million guys!

Please see YouTube video :

https://youtu.be/c_yHDPNYe1k

⟐ Answer accepted August 25, 2019 at 8:35 MST

2004-2008 Ford F-150: How to change front struts on f-150 pickup

Tue, 20 Dec 2016 10:27:29 -0700

How do i change the front struts on my f-150 pickup?

⟐ Answered December 20, 2016 at 10:27 MST

2004-2008 Ford F-150: Howdo I narrow down whether its the resistor or the speed control swit

Tue, 01 Oct 2024 06:43:37 -0700

I have power to the motor. And have checked it with voltmeter. Replaced the resistor. No luck there so I checked the speed control switch and it is melted a little on the connector and there isn't any resistance on the switch. I tried jumping the switch but nothing happened there either. So now I want to check the connector on the resistor. However I can't find an help with that.

⟐ Answer accepted October 01, 2024 at 6:43 MST

2004-2008 Ford F-150: My truck doesn't like hills?

Tue, 22 Feb 2022 05:11:40 -0700

My truck with 99k miles. Seems like it's slipping when going up hills. When it first started happening I would just hit the gas harder but one day I realized it was only doing it at 1200-1300 rpms when when I got the gas pedal about half an inch or more it would jump to 2k rpms. Yesterday it happened 2 times at 2200ish rpms. When going up a decent incline. I have no idea what it is or what I need to check. I'm not rich. So I need to be pointed in the right direction before checking everything. I'll only be able to check one thing a week because I just don't make much moneys. Thanks for your help if anyone can respond.

⟐ Answer edited February 22, 2022 at 5:11 MST

2004-2008 Ford F-150: 2005 ford f-150 lariat power seat problem

Fri, 13 Nov 2020 14:34:09 -0700

Seats move backwards and forward for a second then stops. It makes a squeal noise before it stops.

⟐ Commented November 13, 2020 at 14:34 MST

2004-2008 Ford F-150: The transmission will not engage

Mon, 09 Jul 2018 10:09:31 -0700

The truck has been working fine I pulled my boat out of the lake got it into my garage and it was in four wheel low once I got onto my property because I had to pull it to grass. Got it into my garage turn my truck off. Turn the truck back on and now the transmission won’t engage it still says four wheel low but I put it in neutral try to shift to 2 Wheel Dr. regardless when I put it in drive the engine revs but it does not engage

⟐ Answer edited July 09, 2018 at 10:09 MST

2004-2008 Ford F-150: Instrument Cluster Self Test

Wed, 02 Apr 2025 18:40:52 -0700

Is there a way to have my 2004 F150 perform a self test on the Instrument Cluster?

⟐ Answered April 02, 2025 at 18:40 MST

2004-2008 Ford F-150: Wrench light error code P2135

Fri, 07 Jul 2023 08:11:29 -0700

Good morning. I have a 2008 f150 4.6 v8 xlt. For the past 7 months, my truck randomly produces an error code. P2135 Thottle/Pedal Position Sensor/ Swith A/B Voltage Correlation. The wrench lite comes on and the truck goes into limp mode. I can usually clear by a couple of methods: turning off the engine, disconnecting the battery, clearing the code, or clearing the computer (PCM). This is usually a quick fix, but the problem keeps coming back.

I brought it to a mechanic. He replaced the throttle body. A week later, the problem came back and I brought it back in. He replaced the throttle body again, thinking it maybe a defective part. Ran some diagnostics, and eliminated the pedal sensor, the throttle body. Determined that there were 2 bad coils, started by replacing spark plugs.

Problem still persisted. I changed out all 8 coils, put a new battery in(probably not related), unplugged the throttle sensor, the pedal sensor, the coil wires and the three cables going to the PCM. Waited a couple of minutes and plugged everything back in. Next, I cleared the PCM by disconnecting the negative cable from the battery and connected with an alligator clip to the positive pole on the battery for 15 minutes. Reconnected the battery, turned off all accessories, turned key on and let ignition run thru its beeps and then started the truck, let the truck idle for 15 minutes to relearn everything. This was effective for four months. Now the problem is back again and driving me crazy.

As far as I can tell, the issue began after the serpentine belt was replaced. Last weekend, I had to replace the tensioner pulley assembly. I was hoping I had found the issue.

The problem persisted after 4 days.

The error code is thrown in various situations, as I have tried to monitor what is going on when it happens. 1. truck is idling and heater is on

2. after running truck on highway for at least 10 minutes and get caught in traffic, truck idles at 1800 RPM’s

3. running A/C unit

4. traveling at 65–75mph on highway, no idling, or after idling in traffic

I have heard something about the air intake causing this problem, but have not researched yet…

I have guessed that it is some type of wiring issue, but not sure where to look.

Please help!!!

⟐ Answered July 07, 2023 at 8:11 MST

2004-2008 Ford F-150: Misfire only when hot?

Wed, 15 Nov 2023 11:04:31 -0700

Once the truck gets hot hot it starts to have misfires in 5 and 7. Misfire typically only happens at idle after coming down from higher rpm. The upstream oxygen sensors are reading 15 for long term fuel trims. This meaning that we are lean in the mixture. I have narrowed it down to possibly dirty injectors, ECU, Dirty intake valve (sealing issue).

⟐ Answer accepted November 15, 2023 at 11:04 MST

2004-2008 Ford F-150: Air conditioner blows out tempid air readings show coolant is good

Sat, 17 Jun 2023 10:49:17 -0700

2008 F150 Air conditioner blows tempid air the gauge shows coolant, the compressor kicks on but no cold air..

⟐ Commented June 17, 2023 at 10:49 MST

2004-2008 Ford F-150: I'm have trouble with it turning over

Sun, 24 Oct 2021 13:27:56 -0700

I replaced the starter on Tuesday but I'm still having issues. It's still struggling to turn over and when it does the gauges on the dash twitch back and forth and make some type of noise before acting normally. It's hard to describe the noise. What else could the issue be? Before I replaced the starter when it wouldn't start at all, I still had all power in the truck. Lights, stereo, everything electronic still worked.

⟐ Answer edited October 24, 2021 at 13:27 MST

2006 Ford F-150 Extended cab: Where is the transmission computer?

Thu, 19 Mar 2026 23:37:41 -0700

Where is the computer for the transmission?

⟐ Answered March 19, 2026 at 23:37 MST

2006 Ford F-150 Extended cab: finding key pad code

Fri, 06 Mar 2026 11:30:03 -0700

How do I access the code to the keypad if I bought it and the owner didn't know the code to the door

⟐ Answer edited March 06, 2026 at 11:30 MST

2004-2008 Ford F-150: So my air conditioner just went out on my 2007 for f150

Thu, 18 Sep 2025 08:37:40 -0700

Air went out in my 2007 ford f150. Its not freon. It cant be the blower motor because it is blowing just blows hot. I not it could be a couple of things, but I want to know what the main thing that would cause this.

⟐ Answer edited September 18, 2025 at 8:37 MST

2006 Ford F-150 Extended cab: Replace front turn indicator bulb

Fri, 11 Jul 2025 02:13:08 -0700

Replace front turn indicator bulb

⟐ Answered July 11, 2025 at 2:13 MST

2004-2008 Ford F-150: Battery light won't shut off

Thu, 26 Jun 2025 23:04:35 -0700

The battery light will not shut off even though I changed it to a new battery

⟐ Answered June 26, 2025 at 23:04 MST

2004-2008 Ford F-150: Headlight hi/low beam switch replacement

Sun, 27 Oct 2024 08:36:13 -0700

Replace hi/low switch on headlights of 2007 Ford 150 stx

⟐ Answered October 27, 2024 at 8:36 MST