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(More customer reviews)Universal sensors-Follow instructions exactly.
I replaced a Nissan oxygen sensor previously with a Bosch unit, but it was the kind with the connector built in. In that case there was only a dollar or two difference in price between the universal connector (no plug) and the one with the plug. For my other oxygen sensor (this one) the one with the plug was almost twice the price. Hence I thought most of the effort goes into removing the sensor, not into hooking it up, and so I was willing to do my own splicing. Well not quite. You best follow the instructions sequence exactly or you may get in trouble. Here are a couple of big tips you need.
1. The cable sheath should be cut back an extra inch shorter than instructions recommend, otherwise you will not be able to stick the wires through the waterproof connector far enough.
2. When cutting the original and the replacement wires leave an extra inch on each wire.
3. Make SURE to slip the UN-stripped wire through the rubber grommets first. I figured it would be easier to strip the wire before I threaded all the connector stuff on it. Big mistake. The stripped wire frays so much, and is so stiff that you cannot twist it back into a point. Once stripped I could not get it through the rubber grommets and had to cut off the stripped part. Hence give yourself an extra inch.
While the sensor with the connector also came with a couple of clips to attach the wire to body frame, the universal sensor did not. Another reason to give yourself an extra inch or so, to route the new wire securely without a use of a clip. You will probably destroy the old clips while removing the old sensor. I used the PB nut buster spray on a warm manifold and the old sensor came right out (auto parts store loaner special slotted socket). The new sensor comes with some anti seize compound on the threads so there is no need to buy extra.
The Bosch sensor works great, the catalyst upstream sensor now gives me the correct rich-lean switching frequency signal and the CEL (check engine light) is dark again.
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