I just picked up an 87 Iroc z28, with a swapped 350 tpi - Auto trans. I traded my 98 v6 auto for it. Now here is the down fall. Its in pieces, and I may have bite off more than I can chew.

Almost everything is labeled but its numbered, and the port it goes to isn't numbered. Little lost. I was given everything I "supposedly need" including a Chilton manual. I am good with body and interior, though mechanically dysfunctional.

So I am reaching to you, if you can help me along thats fantastic. Here are some photos;

If you are able to tell me what certain things are, and where they may go, tips, advice, good manuals, also what may be missing.

Engine Bay Shot
http://imgur.com/t4csDJF
Side shot with a few unconnected ports
What belongs there?
http://imgur.com/9rbusbT
http://imgur.com/zUryf1C
Right Rear, unconnected connector what to?
http://imgur.com/MyihpFj
Cruise Control? If so it doesn't need to be hooked up correct?
http://imgur.com/FDIXIgt
More back engine vacuum lines and such
http://imgur.com/vSgxN2k
http://imgur.com/VoxQXsO
http://imgur.com/z1AkSNO
http://imgur.com/WzUdyJ9

Not sure what this is to, its in wiring bundle towards radiator assuming its a relay for it but its not bolted down.
http://imgur.com/1rbywWp


If you can help out at all thanks, even with tips and tricks.

 

Right rear unconnected connector is for the AC system, which appears to have been removed judging from you full engine bay pic.

The one you asked if it was for the cruise is not. It's the Evap or charcoal canister. It collects fuel vapors from the gas tank and stores them until the ECM purges it by opening the canister to the intake,allowing the vapors to be sucked into the engine and burned. I would recommend keeping it as your car can reek of fuel if you remove it. You must keep it if you have to pass any kind if emissions inspection.

 

So from the diagrams I am seeing the canister is on the left? Almost all the vacuum diagrams list it there or some other piece I can't seem to located. Can you confirm or deny this. I also have 2 vacuum lines coming from the firewall that are quite short, i know one os hvac what is the other?

Assuming its the EGR, which i don't seem to have.
http://chevythunder.com/1985-86%205....%20diagram.gif

 

The canister can be on the right or left, depending on year. It was mounted on the side the battery isn't.

The 2 lines from the firewall are both for the HVAC system. One goes to the intake to provide vacuum to the control the dash vent doors. The other goes to a heat diverter valve that controls the flow of engine coolant to the heater core.

The EGR system has 2 vacuum lines. One goes from the intake to the EGR solenoid, the other goes from the solenoid to the EGR valve.

 

As for the relay in your last pic, can you provide a list of the wire colors attached to it? It is probably from the AC system, but could be for the radiator fan or HVAC blower motor.

 

http://imgur.com/ewLfoD7

So assuming this is part of what you are referring to.

It is not installed in the car and I couldn't find the correct locations to where it was to be installed.

 

Can you tell me where at on the intake the vacuum line goes for the vacuum to control the dash vent doors? I have been fighting vacuum leak problems and have had ac/heater off my car for awhile now.

 

Yes, that is the heater diverter valve. I'm not entirely sure which hose goes where on it though. It is normally mounted on the passenger side of the engine. A quick search on here should find the hose routing.

 

Assuming you've got the TBI engine listed on your profile, it would connect to the base of the throttle body, not the intake manifold. TBI throttle bodies have several ports on the base. As long as the hose fits on the port, any port should work fine.

 

The thing you're guessing might have something to do with the cruise control is actually something that is right next to the cruise control, cruise control should have a cable (not a hose) running from it to the throttle body, if you've got cruise control. Instead the canister is some emissions-blah-blah-stuff, luckily here in the Netherlands we don't need that kind of stuff, so I just plugged the lot of it. But yeah it should be connected to your EGR, I think, under the hood there's usually a graphic explaining the routing. On biting off more than you can chew, be glad it's just this, lol. With some research and some help from people here you should have it up and fixed in no time. Nice little project, perhaps, I was in a worse situation with a 2.8L where literally everything was disconnected and I had no reference for anything whatsoever, and I still am partially in that situation. As for the emissions stuff, if you can you could just remove it and seal off the EGR valve opening, it's supposed to somehow make the car in some way less bad to the environment, but let's face it in this case it's a 5.7L V8 what are you really going to expect from it? It's not some boring gutless Japanese car after all. I can understand if you want to keep stuff original though, I'd want to do so as well if there isn't a (significantly) better alternative.

Edit:

Made a little graphic to clear things up, for the cruise control also has a vacuum hose actually:



And there's also a fuel pressure device on the injector rail where such a small vacuum hose can be attached, this should go to the throttle body. If I recall right it's the one on the left when standing in front of the car, the one on the right should go to the other emission stuff that also leads to your EGR valve (as seen in the diagram under the hood).

 

http://imgur.com/hBjNFYW

Found my diagram now the problem is I can't find the "Tank Press. Cont. Valve".

http://imgur.com/jDUA4rz

Can I bypass that, and just run from the canister to the other route towards throttle body?
Also the Diagram has two hvac lines coming in but only one gets hooked up? Any guess what other line is for, still tracing it.

 

Hm interesting, I don't think 88's came with that vac line, only the line to the Heater valve diverter, that was the only line that came out from my firewall. Any who my Throttle Body only has 5 vac locations. 4 in front, EGR, evap-canister, PVC, thermostatic aircleaner and MAP in the back. I'm quite sure most tb's are the same? I have seen some with out the air cleaner one but that's it.....

 

I've never really looked at a thirdgen TBI throttle body all that closely before. I had assumed it was the same as my old GMC truck TBI, but sounds like they are different. I'd probably T into the line going to the air cleaner.

 

The Tank Pressure Control a valve is just a small( about 1.5") plastic disc-looking thing that prevents fuel vapors from escaping back into the tank. It's a one-way valve. You definitely want it connected.

As for the 2 HVAC lines, one controls the coolant flow to the heater core as I posted above. The other one that goes to the intake plenum provides vacuum to the HVAC control unit so it can operate the doors in the ducts to control which vents the heat/AC air comes out of.

 

I'm not entirely hopeless I hope, but I cannot find the Tank Control Valve, I chased the lines all the way back and found nothing similar to what you said, is it a exact location or can it be moved?

 

Most times I've seen the control valve, it is mounted within 6" or so of the charcoal canister.

 

I figured as much, I have nothing that could be it, Any pictures? I have the center hose it just the last one.

 

So i believe i found it, in the car. Pic:
http://imgur.com/sVwyu8N

Thing is I don't know where it all runs and which way it goes. The lines are numbed and the 9 line runs all the way over to where you said Hvac was.
http://imgur.com/udbvWQY
http://imgur.com/sefRUeO

 

That's just a check valve. Here's a link to a pic of what you should have:

http://contentinfo.autozone.com/znet...PV107/image/4/

 

So my diagram makes it appear that one hose from canister runs to this valve and thats it, where do the other 2 lines come from?

 

Unless its ment to hook between where the middle line on the canister is, and this "valve" goes between the and the far right line runs to the top?

 

The port on the side by itself goes to the canister. The bottom port on the side with 2 ports gets connected to the vent line from the fuel tank. The top port gets connected to the vacuum line from the throttle body.