lines and wire, where do they go???

Ok so far i have come across 2 lines and one wire under the hood that i have no idea where they go. one comes off the canister and is supposed to go to the carburator somewhere (looks like it was burned or cut off though as you can see in the pic below), the other is small and looks to be some sort of vacume line or something. the last is a a green wire connector that is right next to the alternator, but i cannot seem to locate where this goes either. i put up some pics of what im looking at, hopefully someone can help me out and identify these parts. the car has been idleing pretty rough too so im sure some of this may have something to do with that. :banghead: http://i15.photobucket.com/albums/a367/pctvman/Canisterevapsys001.jpg http://i15.photobucket.com/albums/a367/pctvman/Canisterevapsys002.jpg http://i15.photobucket.com/albums/a367/pctvman/Canisterevapsys003.jpg http://i15.photobucket.com/albums/a367/pctvman/Canisterevapsys004.jpg

Mike in pic #2 look at the emission sticker (under the hood on the header )for the routing of the hoses. Pic#3 the emission sticker will work again to show the hose that runs the coolant cut off for the heater core when the a/c is turned on to cold ( so cooling and heating don't work against each other),this may cause the a/c to blow warm when the a/c is at full charge. in pic #4 on my 86 caprice this wire is the same as the pic #4 and has never been used in my 21 years of ownership.

The green wire is there for diagnostic/tuning purposes, and is used to set the dwell/duty cycle of the M/C solenoid and idle air bleed adjustments on a carbureted car with the Computer Command Control system (all 1981-1988). You hook the hot lead on a dwell meter to this connector to set the adjustment. That's all it's there for.

ok ill have a look around to see where the big hose goes, i found the other end to the small red line too where it separated.

i still cant seem to locate where that big line goes into the carb. it doesnt show exactly where it goes on the under hood sticker. if i have to i geuss ill look into those haynes repair manuals for this, maybe that will show?

i have the same car one year newer, and i have the same mysterious hose coming out of the canister.
i dont think it goes to the carburator directly.
i studied it for awhile last summer (bored) and concluded that it was tied into the whole vacuum system and as long as the engine was running, i was fine with not knowing exactly what it did.

(that green thing bothered me too the first time i saw it)

One line on the canister goes to the fuel tank - this line should pretty much be self explanatory. The other line (2) goes to a ported thermal vacuum switch (TVS)(4, the green thing in the pic) on the intake manifold. The other hose (5) from the TVS then goes to the canister purge valve (1), which either hovers over, or is mounted to a bracket attached to, the alternator belt bracket. The other large line (3) connecting the purge valve goes to the bowl vent on the carburetor.

http://www.silicon212.org/purge.jpg
http://www.silicon212.org/purge2.jpg

Im a better visual learner so the pics were helpful. so basicly i should be looking for the thermal vacuum switch then to re-connect this line then? in your pics it looks pretty burried deep, is it hard to get to also?

i have the same car one year newer, and i have the same mysterious hose coming out of the canister.
i dont think it goes to the carburator directly.
i studied it for awhile last summer (bored) and concluded that it was tied into the whole vacuum system and as long as the engine was running, i was fine with not knowing exactly what it did.

(that green thing bothered me too the first time i saw it)
Hmm, have you noticed your idle running kind of high? seems thats whats happening with mine though i dont know if that line would have anything to do with how the car idles. overall though does your car seem fine still without it connected? i just want to know the importance of getting that line re-attached... :uhoh:

That line controls distributor advance. Remember, these distributors do not have any mechanical advance, either vacuum or centrifugal, they rely on a signal from the PCM to control the advance. Sure, it will idle higher with the plug pulled off, but it will also have NO POWER while in use and will use more fuel than an EMD SD40-2 locomotive in idle notch 2 (its engine has a cylinder that displaces 645 cubic inches - and multiply that by 16 - the number of cylinders).

So then that line kinda does effect the idle too, i will have that line repaired then. i dont want the car sucking down more gas then it should be either. do you think you can get a pic of exactly where the line plugs into??? i tried looking around for it but cant locate it at all still.

What line is that? The EST wire?

I can take a picture of my engine to show you how it hooks up on mine, but my car has a different type of distributor than yours does and so the lines aren't quite the same (although they perform the same function). The EST line goes from the PCM to the distributor. It's one conductor in a 4-conductor cable that plugs into the distributor.

Your distributor has 2 wire groups coming out of it. One has 4 wires, this is the EST bundle - the other has 3 wires and this connects to the cap.

yeah its the line that comes off the canister marked "Carb" but yeah as i can see in your pics it does look slightly different then mine, hence year difference i know, but if you can put a pic of where its connected to that would be helpful anyways.

yeah its the line that comes off the canister marked "Carb" but yeah as i can see in your pics it does look slightly different then mine, hence year difference i know, but if you can put a pic of where its connected to that would be helpful anyways.

The numbers in the following pictures correspond to the pictures above as well (remarked in photos). I just went out and took these pictures - they are not 'show-off quality', the engine is a little dirty compared with above plus it's raining outside right now.

http://www.silicon212.org/purge3.jpg

The canister line (2) connects to the bottom nipple on the TVS (4). The top nipple of the TVS connects to the bottom nipple (5/16") on the canister purge valve (1) via a 5/16" line (5). The top 5/16" nipple on the purge valve (2nd from bottom), connects to the bowl vent via a 5/16" line (3). The small 3/16" line on the top of the purge valve attaches to a ported vacuum source on the front of the carb. The line below it (1/8" connects to an offset tee on the vacuum hose that runs the PCV valve on the driver side valve cover.

http://www.silicon212.org/purge4.jpg

http://www.silicon212.org/purge5.jpg

Ok i see how yours is set up, it is a bit different then mine. i'll try to trace around and hopefully i'll at least be able to find where it goes if not reconnect it. if i do find where it goes, can i get away with using the hose thats already attached if it goes back on good or should i just replace it? what flows through this line also? thanks for getting those pics up by the way!