hopefully it's easier than getting the throttle body off (not that it was that hard, anyway, just trying to complete this inside of 20 days)



2 new questions to keep you on your toes:



there is something that comes out of the exhaust manifold, I'm thinking the o2 sensor (but I'm not sure), and it has a wire that ends in a greenish plug, which isn't plugged into anything. Should it be plugged in somewhere?



The wire that goes to the ECU ground in the pic listed above, the one that commonly has problems, comes from a branch of three wires. There's the ecu ground wire, a thicker wire (possibly a bunch wrapped up, I can't recall), and a third that's in the middle. This third wire is a single wire, very small, has about 10 inches on it, then has a very small black plastic fitting of some sort (shaped like a crushed soda can), then looks like it was cut off. Any ideas?

 

i got a k&N intake

 

i like

 

cost me $150 though did i get ripped off. my job sells it for $237

 

that is the o2 sensor, there should be a matching plug somewhere.

i think that ground has 3 wires?



mike

 

where should the plug for the o2 sensor be, and how much would it noticeably affect performance with it off?



so are you saying I should just ground that wire?



and rotaryrocket7, what the hell are you talking about?

 

i cant remeber where to 02 sensor plug is on those, i think it hangs out at the rear of the intake manifold.

i think that wire is a ground, but a pic would be good.

3. i dunno



mike

 

The O2 sensor wire does plug in right under the upper intake man toward the firewall... I remember ******* my hand up with that. I've heard many people say their car runs fine without it plugged in but whatever. That wire with the black plastic on it, does it have a metal 2 pronged end on it? I found one like that that was just hanging there and noticed on my other car that it is indeed a ground. Its nice to have two engines to compare when the 86 is stock and I'm ripping apart the 88.

 

the wire with the black plastic ends in what looks like someone cut it off or it got ripped off



I did more looking: the wire in question comes off of a branch of wires including: both wires to the primary fuel injectors, a wire that leads to behind the alternator, the ecu ground at the base of the tb support, and this funky wire with the black plastic thing



and I'm beginning to think there's a typo in the Haynes manual...they keep referring to the upper fuel rail as the primary, and lower the secondary, even though the secondary injectors (the outer-most ones, right?) are on the "primary" rail

 

maybe the funky black plastic wire is where your O2 wire is to plug into.... I don't know, your losing me man, lol.