Any good tricks to remove the sensor from a 99 Ranger manifold (4cyl)? The manifold was replace 40K miles ago and I'm not sure they applied anti-seize. I've already tried the propper socket, on a hot or cold engine.

Does PB Blaster really absorb deep enough to be helpful?

I hate to use a breaker bar and risk breaking something.

Thanks,
Art

 

I tried PB Blaster on a stuck machine tool taper for over two weeks. It did not work. Sometimes heat is the only way to get something unstuck.

 

spray it with something like Liquid Wrench..I also use Keroseen on something stubbron and let it set.. Keroseen eats up any rust and loosens it up.

 

I've used Kano Kroil successfully for more than 30 years, in my optics lab, on some mighty bound up things, including military equipt.

I gave some to our Maintenance guys one day back in 85 & they loosened galled stainless bolts on a vacuum system that they previously had to saw/cut or torch to remove.

You can get it in a aerosol can, plain, or with addtives like moly, graphite, or silicone (don't use the silicone loaded Kroil around your engine) at most industrial supply houses. I've seen it at Dixie Bearing, around here.

Is it worth going to the trouble to find, I think so & so does Steve!!!!!
It's not cheep, but it's GOOD!!!! IMHO
A little goes a long way.

Let us know how you get her out.

You can check out their "Maintenance Ideas" or even order it at http://www.kanolabs.com

 

if the O2 sensor is going to be replaced (and you won't need it anymore) I would suggest Dry Ice. If you warm the Manifold (not to driving Temp, just a little warmer than confortable with your bare hands) then with gloves hold a piece of dry ice to the O2 Sensor, closer to the treads the better--without touching the manifold...the heat will expand the treads on the manifold, and the dry ice will contract the threads on the O2 sensor. This worked for me when I couldn't get mine free either...anti-seize is fairly cheap and one of my best friends!

 

Paw Paw is right Kroil is the best! come to think of it, it's time to order another case.. what makes it work soo good is it contains Keroseen.

 

Thanks guys!

I'll pick up some Kroil. I have to admit though, I don't expect it to penetrate deeply enough to make a difference, but maybe I'll be surprised.

I'll also have to remember that dry ice trick for the future.

Cheers,
Art

 

if your just replacing the sensor heat it up with a propane torch for about 15 min and i bet it will come right out.....try it you cant hurt anything just watch out for any close wires...[when all else fails,heat it]

 

I just took my o2 sensor out and we used two propane torches until the manifold was cherry red, Put the wrench on it and took it off no problem.