Morning everyone!
I cleaned out my engine bay yesterday and while doing that I noticed a couple weird things I need help putting back (I assume). I've marked it to make it painfully obvious what I'm talking about.

This first picture is on the driver's side. It's a connector I found dangling at the front of the engine, behind the belt. It looks to be a part of the same buncha wires that the yellow connector is coming from.


This picture is from the passenger side of the engine. This hose seems to be disconnected but it doesn't look like it reaches far enough to go anywhere, unless it whips around and plugs into that open tube back there on the right. Are they both supposed to be open? The wear on the end of the hose looks like it was clamped onto something at some point but it naturally bends into nowhere.


Thanks for all the help everyone, maybe some of this will help my car run better or cooler somehow hahah.

 

The first one goes to the oxygen sensor in the driver's side exhaust. The hose in the second pic goes to the oil cooler. Since both sides are disconnected, it's completely removed from the circuit and should make little if any difference. Normally it's connected inline with the heater core. Assume it's disconnected because something or other leaks, or the heater core has been deleted, etc.

 

Thanks for the response Drew!

This actually raises a couple more interesting questions. I just had my o2 sensor replaced a couple weeks ago because my car is throwing OBD code 13 but it hasn't shut off the code. So I assume they would have plugged it all in at the shop... Or at least said something.
I have no idea if the heater core is still in there or not. I haven't tested the heater much living here.

If I find a place for that plug will it finally get rid of the check engine light?

 

Given that they didn't plug the wire back in, I wouldn't be surprised if they didn't change the sensor, either.

Yet another object lesson in why I tell people over and over again, NOT to bother with "shop" for their ANTIQUE car. Remember, that's what you're working on here: an ANTIQUE. Go to a car show with other ANTIQUE cars sometime, and look around; and permit yourself to wonder how all those people could POSSIBLY have cars like that, if they had to pay somebody else to do all their work FOR THEM. In other words, pay someone else to participate in their hobby on their behalf FOR THEM, at a profit.

While there are plenty of honest, hard-working, and knowledgeable "shops" out there, the odds of getting sodomized like this and paying for the privilege of enjoying it besides, are MUCH too high to make it worthwhile.

Remove the broken-off piece of sensor stuck in that connector. Inspect the sensor installed in your car: if it doesn't look brand-new and shiny, change it out YOURSELF. Then of course plug it in.

Can't promise that; but I CAN promise that (a) the odds of it will be MUCH higher than they are now; and (b) if you DON'T, you will NEVER get rid of the light.

 

Thanks for the advice Sofa. I think you're totally right, especially with something as small as an o2 sensor. I'll definitely keep it in mind for the future. It's not like these guys are working on your car for their own hobby, it's a business.

I took a look at the sensor and it does look new so I'll plug the wire back in.

 

Well that's good as far as it goes... let's hope it helps.

With those headers, it's not impossible that the sensor will never get hot enough to work right. If so you'll probably need a heated one which will require a certain amount of extra wiring to get it to work. If you still get O2 sensor codes, especially if you reset them and they come back on after maybe 5 minutes or so (some reasonable length of time for the ECM to wait for it to heat up before deciding it's not working right) as opposed to almost immediately (ECM doesn't even see a sensor out there) then that's probably the road you'll have to go down next.

 

So I'm looking at it and a purple wire is coming from the sensor, but it was plugged into a green wire with a similar sensor on it. The green wire seemed to come from a loom by the firewall. I can't find a ton of info about it. Anyway I plugged in the connector that's in my above picture.

But now what do I do about the green wire? I'm going to keep studying the wiring diagrams to see if I can find it.

EDIT: Maybe it's a temp sensor? I don't see where it would plug in. My temp gauge seemingly works

 

Could be the connector is just melted beyond function. The back of the plastic connector just snaps opened/closed then a terminal tool can be used to depress the locking tabs on the terminal, and the plastic shell pulls off. Clean the terminal, slide a new shell on until it clicks, snap the back closed, and its good as new.

Alternatively, hack the old connector off like a serial killer, and crimp/solder/heatshrink a new pigtail onto the wire.

The first option is cheaper, faster, more professional, most people just dont know how to weatherpack.

 

Here's a picture to avoid guesswork.

 

Can't think what a single green Weatherpak like that would be doing in that particular place. I'll leave that to someone with more detail familiarity with TPI than I have. It's definitely something ECM related though; not the temp gauge or any other "car" part like that.

Or you could just leave it hanging. Sooner or later, something will raise its ugly head, about not working.

 

EGR temp sensor. NEXT!

 

You guys are the best. Thanks for all your help! No more check engine light so far!