Replacing oxygen sensor on 1999 F150 - Ford Powerstroke Diesel Forum
Please Visit our Site Sponsors
Ford Gassers A Place for Diesel nuts to discuss Ford Gasoline powered vehicles!!! is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
LinkBack Thread Tools Display Modes
Old 07-28-2012, 12:06 PM


Join Date: Jun 2006
Location: Texas
Posts: 5,166
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Replacing oxygen sensor on 1999 F150

At least this is how I did it after a P0133 code.

The back ground on my truck (1999 F150) is that I am the second owner (my former neighbor was the first) and it has 293K miles on it at the time of this post. The truck is bone stock FWIW.

I searched the internet and couldn't find a good step by step replacement write up. The front oxygen sensor on the passenger side is hard to get to so here is what I did:

Jacked the truck up and placed jack stands under it. Removed the front passenger tire and the plastic wheel well liner.
Tools needed for this part are a 7/32 socket and a trim tool remover (for the plastic push in fittings).

There are 5 screws and 3 or 4 plastic push retainers (don't know actual term) to remove.
Because of the location of the sensor I had to remove the transmission dipstick tube. *If you do this have a pan or bucket under this area as you are going to lose fluid* the dipstick tube is held place by an 8mm bolt about the middle of the exhaust manifold. Unscrew it and with a little pressure the tube will pop up and out, and so will some fluid.

Wheel well liner out and dipstick tube pulled out of the way.

The connector where you will disconnect the old 02 sensor is tucked up behind the engine block and is kind of hard to get to. A little time and patience and you can get it separated.

From underneath the truck I cut the end off of the old 02 sensor (because the closed end of the wrench wouldn't fit over it) and used a 7/8 box wrench to unloosen the sensor a little at a time until I could get it out with my fingers.

I put the new 02 sensor in finger tight and then tightened it down with small turns of the 7/8 wrench until tight

The cord on the new sensor is longer than the factory one so once reconnected I used zip ties to keep the slack up and away from the hot parts.

New 02 sensor installed and dip stick tube back in place. Note the attachment approx 1/2 down the dipstick tube. It is the 8mm bolt I previously mentioned.

Wheel well back in place.

Truck lowered back to the ground.

Hope this helps someone else out, as many on here have helped me.

Have a good one.
Reply With Quote Quick reply to this message
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
What state or province do you live in?
Security Question
*Required, this field is not shown to others. Enter the last two characters of the word "Powerstroke"
Security Question #2
*Required, this field is not shown to others. "While balancing on a piece of wood, two inches by four inches known as a 2x4, john and his friend sally both spotted a dalmatian inside a truck with sirens, headed to put out a fire. State the animal mentioned in the sentence above."
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -8. The time now is 08:01 PM.

Powered by vBulletin® Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.