I have a white plug on my 87 t2 harness that is located on the same "branch" as the alternator plug , bac, and the o2 senor. well one of the wires on that harness were brittle and snapped. what does this go to ??,, anyone??

also since i have removed the emissions do i need that black sensor on top of the UIM ?? or can i chuck it.. i think i read somewhere that i can get rid of it but i wasnt sure. any help would be great thanks

 

gos to the crank angle sensor I believe.

Define black sensor...

 

its the sensor that is connected to the BAC .on top of the UIM right underneath the TMIC.

as for the white harness. its about 1 inch away from the the Alt plug. and it dones look like the CAS harness .. any other guesses?

 

I think that goes to your flux capacitor!

 

It goes to the dones solenoid. Just to the left of the thacker valve.

 

pictures are always helpful. Do you have a digital camera? If not, I have 3. I'll sell you the cheap one for $25 shipped. Comes with software and USB cable.

 

wtf?? thread jackers,, yes i have a camera ,, ill take a pic tomorrow

 

www.rotaryresurrection.com ---> tech --->s4 turbo emissions removal

Sounds like you broke one of the acv plug wires..common. Just tape it off.

 

On a series four, it sounds like the Air Bypass Solenoid. IF it has a hose coming off it going to the left side of the intercooler. Then again, it could be the Dones solenoid (humor).

 

RR i think your right.. I removed the ACV a long time ago and forgot that it was even part of the car.. heheh thanks ..

and Hailers, not funny... heheheheh ,, I always like the kiniffler bearing and blinker fluid ones. hehehehehh

 

here are the pics to confirm

the harness in question

the sensor in question

 

As I said earlier, that is the Air Bypass Solenoid. The last picture. I also know what the white plug is for.





The white plug is for either the port air solenoid or the Split Air Solenoid. Neither of which is installed on your car according to one of your above posts.





You can remove the Air Bypas Solenoid. It only works at startup for 17 seconds in conjunction with the bac to give the approx 3000 rpm on start up. That is the ONLY time it is used, and most of them already have their two wires broken off after fifteen years or so.

 

so i can i remove that black soleniod??

 

See my post above.

 

ok didnt see that before,.. my bad./.

 

the last one is just for the powersteering, so when you turn the wheel it keeps the idle up, if you dont have ps you can remove it, atleast plug it off

 

No it is NOT. It is the Air Bypass Solenoid Valve. The item on a series four that responds to steering inputs is the AIR SUPPLY VALVE located on the back of the intake manifold. That is what the second small hose on the intercooler is for.

There is a free, online, Factory Service Manual available and ready for downloading. It has graphics and words to go with them. It's in the FUEL SECTION.