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What is is this plug???


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Posted

Was swapping two wheels today to see if it was the wheel/tire or if it's something else up front, and I was just taking a quick look around and found this:

 

IMG_2778.jpg

IMG_2779.jpg

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Posted

that looks like your map sensor plug :think:

 

It is 3 wire but I didnt know DOHC had the MAP sensor down there?

Posted

no, it's got the 3 seperate cylinders/prongs. The alternator should have a rectangularish plug?

 

that looks like your map sensor plug :think:

 

It is 3 wire but I didnt know DOHC had the MAP sensor down there?

 

well no not down there, obviously it would be misplaced. But I would think you'd notice if your map sensor wasn't plugged in lol.

Posted

I hate mystery wires. I had a shop look at one of mine and they couldnt find out anything. It must do something, thats the scary thing.

Posted

its two wires, purple and yellow. Alternator is plugged in, and this has been unplugged as far as I know since last spring when I had the engine done, or at least last fall when I had the rack replaced. I don't know of anything unusual going on :dunno:

Posted

Only plug I can think of back there is the crank position sensor on the side of the block... but once again I think youd notice it if it wasnt plugged in... :lol:

Posted

so far, true :lol: I think a reliably running car for a year and a half rules both of those out

Posted

well A) the car is back together and it's dark out, B) its just a two hole plug, it looks like any other basic two wire plug in the engine compartment :dunno:

Posted

2 wires purple and yellow. I'm pretty sure it is either the crank sensor or the speed sensor. If you had the ICM moved it is most likely the crank sensor. One has a twist and the other does not. Pretty sure the crank sensor has the twist. When I swapped my engine, they both had the same color and wire harness and only differed in the twist. I couldn't get the car running and the reason was because I had mixed the 2 up.

Posted

well I did have the coils relocated, but a) why would there still be a plug end, and B) why is it on the back side? :thinking: I had a problem the first day I got it back from the swap, and the speed sensor was unplugged, not allowing the trans to shift out of first (since the speed sensor was registering 0) so I don't think it's that, and if it was the crank sensor, it wouldnt run at all

Posted

could a new wire have been run to relocate the coilpacks, thus leaving the old wire behind?

Posted

possible, but I would assume that he would have kept the plug end, since that would be needed to plug into the new ICM

Posted

canister purge solenoid?

 

is that the film canister type looking thing in the pic? if so, that's what I thought, but theres already a plug in it (blocked in the pic)

Posted

not sure where you see that, but it's just a solenoid with two hoses attached to it. One hose comes from a steel line that runs to the back of the car, and the other hose goes to near the TB somewhere.

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