Rancid7

i recently had to replace the rod that opens the 6 port b/c mine snapped at the actuator but thats all been repaired and thats not what i need help on ...it took me over 2 months and now im ready get the upper manifold back on ..i checked to see that all the vacuum lines were hooked up and such ...made sure the injectors were plugged in and then i found a 3rd electrical connector under there ..its a round black connector with one wire going into it (its a 1 pin connector) im not sure what this hooks up too ....i looked all around for the other half and i found no round connector but what i did find was a wire that looks like the connector was ripped off or pulled off while i was workin under there .....the wire comes out of the wiring harnass along with the tps connector the secondary injectors connectors and the bac valve connector ..what i need to know is ..is that what the black round 1 wire 1 pin located under the upper manifold running with the 2 primary injector wires hookes up too ? and if so how do i connect the two ? the plastic connector is gone i cant find it anywhere ..i was thinking about just splicing them together but its not a regular wire ..its a normal wire then it has what seems to be wire mesh around it then that mesh is covered with another layer of plastic ...im guessing its a ground of some kind ...i hope someone can help me out ..im not bad when it comes to cars and my rx7 but as you can see im no expert ..i've looked in the haynes to see if i could find out if in fact those two connect to eachother but i cant ...if anyone knows what im talking about please help me ...i wanna finish this nightmare this weekend. i'd really appreciate any help i can get ...hopefully someone will know what im talking about by my (horrible but best i can do) descprition ....by the way its a 90 na 5 spd

prmazdarx7

its you o2 sensor wire the one you talking about

Keith

Hey, I don't have a '90 NA, only an '87 TII. However, that wire type you describe sounds like the kind of wire that comes off of an 02 sensor. If it is, do not connect the wire mesh to the center conductor. If you do, you will ground out the sensor. Just a thought. Have fun!

Irv, Keith's dad

mazdaspeed7

I had the exact same problem when I pulled the engine out of my car and was putting it back in. There should be two wires with that connector. One is for the O2 sensor, and the other is for the p/s pump(Im pretty sure, even though its been a while since I did it)

Rancid7

one of the wires was for the 02 sensor ..i cant believe i didnt notice it ...thanx a lot i really appreciate it ..i dont know what i'd do without ya ...but i havent figured out where the round black i pin one wire connector found under the upper manifold goes . it runs side by side with the primary injector connector wires ....im starting to think its a dummy connector but i dont want to take my chances ..i cant seem to find where it hooks up too .....i hope one of you can help me ...again ...thanx a lot

mazdaspeed7

That is what I thought too, but I was a bit skeptical at first. I removed all of my emissions stuff at that time, so I was wondering if I really needed it. I really cant remember if I hooked it up to anything, or just left it. I havent had any problems though.