'95 E-250: just one O2 sensor, right?
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New User
Joined: Jul 2005
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From: Bainbridge Island, WA
O2 Sensor - removal help & just 1 on '95 E-250?
351 V-8, just want to know if I know more than the guy at NAPA (not really
), I've done my thread searching, too.
Can anyone confirm that there's just one on this rig?
), I've done my thread searching, too. Can anyone confirm that there's just one on this rig?
Last edited by steddy; Jun 15, 2006 at 11:12 PM. Reason: new issue, change title
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From: Bainbridge Island, WA
And the other problem I had a feeling I'd get into - help getting it off 
....
I had been letting PB seep in for a few days, bought a sensor socket (7/8, don't know if 22mm is better/available), but the socket opens up under torque and slipped - didn't totally strip the sensor - thought I heard it creak a little/budging before the slip. Put the heat gun on it (exhaust pipe), then the socket again, still opening up (didn't let it slip again, of course).
I did read of one guy slipping a wrench over the wiring to the business end, but that is a tight area to work in and I can see the potential need for a ratchet.
Any further tips appreciated. It's probably the original sensor and 10 year old rust, so I know it might be a totally different approach like destroying the sensor to get a regular socket on or even cutting, drilling and retapping - hopefully not.
....I had been letting PB seep in for a few days, bought a sensor socket (7/8, don't know if 22mm is better/available), but the socket opens up under torque and slipped - didn't totally strip the sensor - thought I heard it creak a little/budging before the slip. Put the heat gun on it (exhaust pipe), then the socket again, still opening up (didn't let it slip again, of course).
I did read of one guy slipping a wrench over the wiring to the business end, but that is a tight area to work in and I can see the potential need for a ratchet.
Any further tips appreciated. It's probably the original sensor and 10 year old rust, so I know it might be a totally different approach like destroying the sensor to get a regular socket on or even cutting, drilling and retapping - hopefully not.
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I have a '94 E150,351w,175,000mi.
Last week I replaced O2 sen,on my van there was enough room
to put a extra long HD open- box wrench on it and oil.
After 2 days of trying I cut the wire and used the box end and it came off.
I used a tap to clean it up and the new sen had anitsize on it.
Was able to use the open end to re install.
Hope this helps. Carson
Last week I replaced O2 sen,on my van there was enough room
to put a extra long HD open- box wrench on it and oil.
After 2 days of trying I cut the wire and used the box end and it came off.
I used a tap to clean it up and the new sen had anitsize on it.
Was able to use the open end to re install.
Hope this helps. Carson
Elder User
Joined: Feb 2004
Posts: 638
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From: Birmingham, AL
You should only have one sensor right where the two pipes come together.
I was able to easily remove mine from my '94 last year using a 22mm open end wrench. You can try all of the usual stuck bolt methods to see what might work. Heat the bung area of the pipe with a propane torch and then do one of the following. Place a candle against the threads after heating and the wax will suck into the threads much like soldering. Or use a spray lube in the same way. If it doesn't loosen try it again. Some times tightening the fastener a little bit first before you loosen it will help break it loose.
If you can put one or two hose clamps around the O2 sensor socket to keep it from spreading open, that may work.
Gene
I was able to easily remove mine from my '94 last year using a 22mm open end wrench. You can try all of the usual stuck bolt methods to see what might work. Heat the bung area of the pipe with a propane torch and then do one of the following. Place a candle against the threads after heating and the wax will suck into the threads much like soldering. Or use a spray lube in the same way. If it doesn't loosen try it again. Some times tightening the fastener a little bit first before you loosen it will help break it loose.
If you can put one or two hose clamps around the O2 sensor socket to keep it from spreading open, that may work.
Gene
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From: Bainbridge Island, WA
Sounds good - don't have to find some mystery sensor in some strange place and spend another 50 bucks on it!
Mine did come out easily after putting 2 hose clamps on the sensor socket (I had thought of that, too), and just doing it when the pipe was at normal operating temperature (torching for a couple minutes didn't seem to be enough).
Thanks for the 'soldering' trick to add to the bag.
Mine did come out easily after putting 2 hose clamps on the sensor socket (I had thought of that, too), and just doing it when the pipe was at normal operating temperature (torching for a couple minutes didn't seem to be enough).
Thanks for the 'soldering' trick to add to the bag.
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