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hi Friends

I have a 1990 ford tempo GL 4 cylinder. I am attempting to replace the Oxygen sensor. There is just no way to get at the Pig tail wire running under the exhaust manifold. Any one have any advice? I'm thinking I can remove the Valve cover and gain some clearance to reach in with palms up and finger tip the wire and drag it out. Has anyone removed a valve cover and can tell me how much clearance from the inside cover top to the value distance might be?

https://www.google.com/search?biw=1088&bih=497&tbm=isch&sa=1&ei=RTDNWozcHcuL0wK_n4XgCA&q=1990+ford+tempo+valve+cover++removal&oq=1990+ford+tempo+valve+cover++removal&gs_l=psy-ab.3...6247.8911.0.10746.8.8.0.0.0.0.292.1135.0j7j1.8.0....0...1c.1.64.psy-ab..0.0.0....0.SVL2ey2nCbY#imgrc=ZfjO1q7tcg12zM:&spf=1523396693287

the replacement sensor is a one piece unit plug wire and all.
 

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Never pulled one off of one of them critters, but... what I have done when I have a stuck O2 and have to get it out is snip the wire close to the sensor so I can get a deep well on it and the wire should be free to fish out. Only do it if you know for a fact that the sensor is dead.
 

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They make sockets with cutouts to handle the harness with no snipping at all.

You do that work under the car and ten minutes work if the sensor has not seized in the manifold. Removing the VC is the wrong way to go there, you get hardly any more room there and the intake manifold is still in your way super bigtime. BTDT.
 
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