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  #1  
Old 04-17-2006, 02:08 AM
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What size socket for O2 sensors

What size is the o2 sensors on the 97-04 f150s? I want to change mine tomorrow but not sure if it have the socket or wrench for it.
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Old 04-17-2006, 02:24 AM
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It helps if you go to AutoZone or some store like that and rent the O2 sensor sockets...they have a slot in the side so the socket slides over the cables.

But in any case, I believe its a 7/8" or 13/16"...I forget which one.
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  #3  
Old 04-17-2006, 03:23 AM
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It's 7/8".
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  #4  
Old 04-17-2006, 08:01 AM
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Quote:
Originally Posted by PKRWUD
It's 7/8".
+1.
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  #5  
Old 04-17-2006, 11:18 AM
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The nut on the O2 Sensor is a 22mm.

JMC
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  #6  
Old 04-17-2006, 11:28 AM
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i found the easiest way when changing mine was a 22mm stubby.
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  #7  
Old 04-17-2006, 11:44 AM
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7/8 = .875 in = 22.2 mm, 22 mm may be the right size but 7/8 has worked fine for me in the past
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Old 04-17-2006, 12:37 PM
JMC JMC is offline
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Nine times out of ten a standard size wrench/socket will fit on a metric bolt and vice versa. It is that 10th time that gets you. I must confess that I have been in situations that have seen me use a standard tool on a metric fastener but I leave that up to the individual to decide. That is why I strive to provide the most accurate information that I can.

JMC
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  #9  
Old 04-17-2006, 12:41 PM
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Make the O2 Replacement Easy

make life easy

remove the inner fender wells- about 6 screws and 5 minutes

disconnect the wire harness

use a 22mm or 7/8 box

no need for a special tool plus disconnecting the harness becomes much easier
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  #10  
Old 04-18-2006, 01:44 PM
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I just used a regular sized 7/8 inch wrench. It was easy. The only thing I removed was the transmission dipstick tube. 1 bolt.
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  #11  
Old 04-18-2006, 03:38 PM
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For future, I got an O2 sensor flex head wrench, that is like a 2 sided open end 22mm wrench.

Click the image to open in full size.

Worked great, but now that I read the remove the inner fender wall trick, I might not need it any more.

Last edited by SSCULLY; 04-18-2006 at 03:41 PM.
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  #12  
Old 04-18-2006, 03:46 PM
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fender well trick works for the starter too
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  #13  
Old 04-18-2006, 04:03 PM
JMC JMC is offline
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Quote:
Originally Posted by rmeidlinger
fender well trick works for the starter too
Not if you have headers.

JMC
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  #14  
Old 04-18-2006, 04:24 PM
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Quote:
Originally Posted by SSCULLY
For future, I got an O2 sensor flex head wrench, that is like a 2 sided open end 22mm wrench.

Click the image to open in full size.

Worked great, but now that I read the remove the inner fender wall trick, I might not need it any more.
The hard part for me was getting the plastic clip loose. The sensors were easy to unscrew with a regular wrench.
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  #15  
Old 04-18-2006, 04:32 PM
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Quote:
Originally Posted by JMC
Not if you have headers.

JMC

somedays life ain't fair

engineering is said to be a science of compromises
go fast- give up mileage/get good mileage -go slow
have headers and go fast(maybe)/ starter removal goes slow
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Old 04-18-2006, 04:32 PM


 
 
 
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