Co.Jeep.Manche401 Posted May 14, 2014 Share Posted May 14, 2014 Hey Guys, I need your knowledge. I picked up a Renix a few weeks ago that is barely running. Right off the bar I knew it was missing a ton of vacuum lines. My replacement harnesses finally came in but I don't know where they connect to. I tried winging it and I know it's wrong. I tried reading a diagram but I won't lie, I don't know how to read it, I'm better at looking at photos of another's lines or any guidance you guys can give. Also there is a place tube that goes against the drivers side fire wall and ends near the air box. No idea where it goes. I also have the third line from cruisers renix tips from napa auto parts but have no idea where it goes. It's the last pic. Any help would be great. Thanks, Mike Link to comment Share on other sites More sharing options...
ParadiseMJ Posted May 15, 2014 Share Posted May 15, 2014 Well, you're almost there. Start at the front of the fuel rail with the short vac line. One end goes on the fuel pressure regulator, the other goes to the front nipple on the intake manifold. In one of these pictures you're holding the bigger vac hose with the u-turn in it. The straight end goes into the hard plastic tube on the drivers fender, the other end goes UNDER the intake tube and attaches to the air box. On the plastic vac coupler, one tube goes to the EGR (exhaust gas recirculation) valve, one goes to the BACK of the air box, one goes to the EGR solenoid on the fender.. .. the lat picture is the MAP line. It goes from the MAP sensor on the firewall to the throttle body. There are two holes in the rubber grommet on the TB, one goes all the way thru, the other is just a plug, or keeper. Link to comment Share on other sites More sharing options...
Co.Jeep.Manche401 Posted May 15, 2014 Author Share Posted May 15, 2014 Thanks. This should help. I think I figured out the uturn hose connects to the nipple under the air box. Basically because it's the only place it could reach. Do you know what this is? Is it part of the vacuum lines? Link to comment Share on other sites More sharing options...
cruiser54 Posted May 15, 2014 Share Posted May 15, 2014 Click on this link: And, if anyone wants to post the contents of that link into this thread, feel free to do so. http://www.cherokeeforum.com/f2/renix-vacuum-diagrams-engine-bay-192572/ Link to comment Share on other sites More sharing options...
ParadiseMJ Posted May 15, 2014 Share Posted May 15, 2014 OK, I think the one I told you was the MAP line is incorrect. I just saw the white tip so that is your CCV line. Goes from the grommet on the rear of the valve cover to another nipple on the intake manifold. The large line on the driver fender come from the airbox, uner the tube, to the hard plastic line. then the hard line goes under the washer fluid tank, takes a turn along the firewall behine the engine to the charcoal cannoster. Fumes get sucked up from your fuel tank come through the cannister, to the air box, into the intake to be burned up. The other fat line (from the front of the airbox) is set up correctly, it creates a flow from the valve cover to the intake manifold via the small metered line in the BACK of the valve cover. Any of that make sense. EDIT: Cruiser, I didn't read your post, it popped up between computer glitches Link to comment Share on other sites More sharing options...
Co.Jeep.Manche401 Posted May 16, 2014 Author Share Posted May 16, 2014 Thanks for the clarification paradise, also thanks for the diagrams Cruiser. I think I have it figured out. Let me know what you guys think. I'm not sure about the line I attached to the EGR. The PO had a line run from the vacuum motor (I think that's what it is) to the EGR, I changed it an attached the vacuum line from the harness. The last picture shows the POs line. So I did all of this, when I got the truck it was running really rough, now it's not even starting. Any ideas? I did the plugs, rotor, cap, oil change, air filter, new battery, new vacuum lines, refreshed the dip stick ground, and cleaned the tar out of the c101. These vacuum lines are either wrong, or the firing order is wrong but I followed the order out of the Haynes Manuel. I don't think I screwed up the rotor location because it would not move. Only thing left would be to do a top dead center on cylinder 1. Unless these vacuum lines are wrong, would that stop it from starting? Another thought is a fuel delivery issue. Might be time to send it to a professional. Oy. Link to comment Share on other sites More sharing options...
cruiser54 Posted May 16, 2014 Share Posted May 16, 2014 Haynes manual has a messed up firing order!! You have mail Link to comment Share on other sites More sharing options...
Co.Jeep.Manche401 Posted May 16, 2014 Author Share Posted May 16, 2014 What!!!!! This is what I used! Checking mail now, so pissed off. Link to comment Share on other sites More sharing options...
91Pioneer Posted May 16, 2014 Share Posted May 16, 2014 I think you have it mostly figured out but.... I have an 88 with all factory vacuum stuff as far as I can tell. I can take pics of whatever you need, just let me know. p.s. The firing order is also embossed right into the intake manifold. Link to comment Share on other sites More sharing options...
Co.Jeep.Manche401 Posted May 16, 2014 Author Share Posted May 16, 2014 Thanks, I would appreciate a photo of the line connected to your EGR, and where does that line in the last pic go? Should I just cap it? Link to comment Share on other sites More sharing options...
Co.Jeep.Manche401 Posted May 16, 2014 Author Share Posted May 16, 2014 So the diagram I'm looking at has the EGR connected to the EGR solenoid? And the vacuum motor to the open nipple on the air box, is that right? If so my lines are definitely wrong. What do I have connected to the EGR? It's coming off the harness. Link to comment Share on other sites More sharing options...
Co.Jeep.Manche401 Posted May 16, 2014 Author Share Posted May 16, 2014 Is the EGR transducer needed? I just figured out mines missing that part. Link to comment Share on other sites More sharing options...
ParadiseMJ Posted May 16, 2014 Share Posted May 16, 2014 One hose comes off the harness and goes to the EGR. From the EGR, or the servo next to it, then off to the solenoid. The firing order is correct EXCEPT it looks like 4 is where 1 should be. Use the 1 printed on the cap as the starting point. If you used the 1 in the manual, it's likely off by one (5-3-6-2-4-1), which would cause either a no start or a very rough running engine. ...and just to belabor the point the REAL firing order is written right, it's just the starting point is off in the diagram...so 1-5-3-6-2-4 is correct, considering that you start at the right spot. Link to comment Share on other sites More sharing options...
Co.Jeep.Manche401 Posted May 16, 2014 Author Share Posted May 16, 2014 My EGR only has one nipple how can it continue to the solenoid. Link to comment Share on other sites More sharing options...
91Pioneer Posted May 16, 2014 Share Posted May 16, 2014 I'll get you some pics this afternoon. Link to comment Share on other sites More sharing options...
ParadiseMJ Posted May 16, 2014 Share Posted May 16, 2014 I'll try to get a picture of my EGR lines. I have my air box out so it should give you a clear shot of the set-up. Link to comment Share on other sites More sharing options...
Co.Jeep.Manche401 Posted May 16, 2014 Author Share Posted May 16, 2014 Thanks guys.. I appreciate it, I want this MJ running! Link to comment Share on other sites More sharing options...
91Pioneer Posted May 16, 2014 Share Posted May 16, 2014 OK here's the photos, if you have questions, please be specific, I'll do my best to help. Link to comment Share on other sites More sharing options...
Co.Jeep.Manche401 Posted May 16, 2014 Author Share Posted May 16, 2014 This is amazing, I'm clearly missing part of my EGR valve. Did you buy that vavle or is it the original? Thank you so much, now I just need the weather to clear Link to comment Share on other sites More sharing options...
91Pioneer Posted May 16, 2014 Share Posted May 16, 2014 Factory to my knowledge. Straight from RockAuto: They do, however show one like yours without the extra plastic do-hickey. Link to comment Share on other sites More sharing options...
Co.Jeep.Manche401 Posted May 17, 2014 Author Share Posted May 17, 2014 Holy $#!&! Got her to fire up and it's glorious, it's the quietest she has ever been! Down side though, she fired up high RPMs, tries to drop down, and stalls out. No idea what to do now. So the firing order is correct and thanks to paradiseMJ, cruiser and dainternetguy my vacuum lines are correct, no idea what to trouble shoot next. I refreshed the dip stick ground. I've been trying to refresh the braided line on the block but it's not coming loose off the block at all. Any other ideas on what it could be? Link to comment Share on other sites More sharing options...
cruiser54 Posted May 17, 2014 Share Posted May 17, 2014 Good news. Just add a ground from the firewall to the intake per my instructions. How good are you at soldering? Link to comment Share on other sites More sharing options...
Co.Jeep.Manche401 Posted May 17, 2014 Author Share Posted May 17, 2014 Never done it in my life, ha ha, guess I could pick up the stuff at harbor freight though. Link to comment Share on other sites More sharing options...
Co.Jeep.Manche401 Posted May 17, 2014 Author Share Posted May 17, 2014 Would I need to add a ground if I can finally get the braided line loose? Link to comment Share on other sites More sharing options...
cruiser54 Posted May 17, 2014 Share Posted May 17, 2014 Would I need to add a ground if I can finally get the braided line loose? Can't hurt. I'm thinking soldering for the C101. gotta stretch!!!!!!!!!!!! Link to comment Share on other sites More sharing options...
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