91Pioneer Posted July 9, 2014 Share Posted July 9, 2014 Pretty simple, how exactly does this little do-hickey work? One vacuum line coming out of it goes to the intake manifold I believe (it has suction when engine is running), the other vacuum line goes to the preheater valve thing that sucks air surrounding the exhaust manifold (this vacuum line only gets vacuum if this little do-hickey gives it vacuum). I removed mine to try and figure it out and see if it's working OK. Problem is I don't think it's doing anything. The long and short of it is I'm trying to get the preheater thing at the front of the air box to work right. I removed the two vacuum lines off the air box and put them together, but that just holds the preheater valve/flap open all the time and I don't want that. It's 31 degrees Celcius today so I was expecting the valve to close. Now that I study the pic, I think my two vacuum lines going into the little thing may have been on the wrong ports. The diagram makes me think the thermostatic controlled valve vacuum line should go to the port closest to the fender, and I think mine was the other way around... Hmm.... Oh and before someone tells me to not worry about it, the temps get down to -35 C in winter so I if I can have this thing warm up faster in winter, then I want this in working condition. I have the preheater hose from the exhaust up to the intake box where it goes, I'm just not certain that the valve/vacuum lines are working right. And unfortunately it's summer now so it's hard to test it since it's not really cold. Link to comment Share on other sites More sharing options...
manche_mane Posted July 9, 2014 Share Posted July 9, 2014 my air box was removed but I still have that piece. it has a twig plugging one side... :dunno: Link to comment Share on other sites More sharing options...
cruiser54 Posted July 10, 2014 Share Posted July 10, 2014 If the incoming air is below a certain temp, the #8 opens up and pulls the flap on the air cleaner to draw air from the hot manifold thingie. When temp is above that level, it lets the flap close and pull cool air in from the front of the vehicle. Do you live in the North Pole? Link to comment Share on other sites More sharing options...
Jeep Driver Posted July 10, 2014 Share Posted July 10, 2014 my air box was removed but I still have that piece. it has a twig plugging one side... :dunno: Classy. Link to comment Share on other sites More sharing options...
HOrnbrod Posted July 10, 2014 Share Posted July 10, 2014 my air box was removed but I still have that piece. it has a twig plugging one side... :dunno: Classy. Very. :rotfl2: Link to comment Share on other sites More sharing options...
Keyav8r Posted July 10, 2014 Share Posted July 10, 2014 An eco-friendly, green, sustainable solution, for sure. Link to comment Share on other sites More sharing options...
cruiser54 Posted July 10, 2014 Share Posted July 10, 2014 An eco-friendly, green, sustainable solution, for sure. Too funny!! I needed that. How's this? (smirk, heard it, forwarded) A woman from Los Angeles, who was a tree hugger and an anti-hunter, purchased a piece of timberland. There was a large tree on one of the highest points in the tract. She wanted a good view of the natural splendor of her land so she started to climb the big tree. As she neared the top she encountered a spotted owl that attacked her. In her haste to escape, the woman slid down the tree to the ground and got many splinters in her crotch. In considerable pain, she hurried to the nearest doctor. She told him she was an environmentalist and an anti-hunter and how she came to get all the splinters. The doctor listened to her story with great patience and then told her to go into the examining room and he would see if he could help her. She sat and waited three hours before the doctor reappeared. The angry woman demanded, "What took you so long?" He smiled and then told her, "Well, I had to get permits from the Environmental Protection Agency, the Forest Service and the Bureau of Land Management before I could remove old-growth timber from a recreational area. I'm sorry, but they turned me down." Link to comment Share on other sites More sharing options...
danbyrambler Posted July 10, 2014 Share Posted July 10, 2014 How Does Part #8 Work Exactly? Hey! How exactly is a rainbow made? How exactly does a sun set? How exactly does a posi-trac rear-end on a Plymouth work? It just does. Sorry - Couldn't resist - Reminded me of some JD stuff Anyway, I think you may be missing a part or two - - Here's a vac diagram lifted from Cruiser's tech pics in DIY - page 4, pic #85 http://www.cherokeeforum.com/members/cruiser54-42565/albums/jeep-technical-photos/102110-vacuum-diagram-4-0-renix/ . :MJ 1: . Link to comment Share on other sites More sharing options...
cruiser54 Posted July 10, 2014 Share Posted July 10, 2014 How Does Part #8 Work Exactly? Hey! How exactly is a rainbow made? How exactly does a sun set? How exactly does a posi-trac rear-end on a Plymouth work? It just does. Sorry - Couldn't resist - Reminded me of some JD stuff Anyway, I think you may be missing a part or two - - Here's a vac diagram lifted from Cruiser's tech pics in DIY - page 4, pic #85 http://www.cherokeeforum.com/members/cruiser54-42565/albums/jeep-technical-photos/102110-vacuum-diagram-4-0-renix/ . :MJ 1: . Thanks for using the photos!! Just what I was hoping for. Too bad I don't know how to do it. How long is a piece of string, BTW? Link to comment Share on other sites More sharing options...
91Pioneer Posted July 10, 2014 Author Share Posted July 10, 2014 I don't know who or what a JD is but OK. Aha, now I know what it's actually called. Bi-metal temp sensor. Hmmm.... I guess if I was hardcore I could put the thing in my deep freeze, then install it quickly and see if it works right LOL. We'll see.... ;) BTW, I'm not missing any parts. But the hoses may have been plugged into the wrong ports. And yeah I kind of do live at the North Pole compared to you, I live in Canada LOL. The windchill can get in the -50's. Brutal stuff. Link to comment Share on other sites More sharing options...
91Pioneer Posted July 10, 2014 Author Share Posted July 10, 2014 p.s. Using cherokeeforum to host photos sucks because I see no way to hotlink to the photo. Normally you can include a photo in a post elsewhere, but they seem to have gone to great lengths to stop that. Boo. But thanks for sharing it cruiser. Link to comment Share on other sites More sharing options...
cruiser54 Posted July 10, 2014 Share Posted July 10, 2014 p.s. Using cherokeeforum to host photos sucks because I see no way to hotlink to the photo. Normally you can include a photo in a post elsewhere, but they seem to have gone to great lengths to stop that. Boo. But thanks for sharing it cruiser. I'd love to be able to host them somewhere so they can be shared here in an as-needed basis. Link to comment Share on other sites More sharing options...
91Pioneer Posted July 10, 2014 Author Share Posted July 10, 2014 I use flickr.com for photo sharing, mainly just for posting here. Link to comment Share on other sites More sharing options...
cruiser54 Posted July 10, 2014 Share Posted July 10, 2014 I use flickr.com for photo sharing, mainly just for posting here. I tried one of those sites. Had trouble with it. Link to comment Share on other sites More sharing options...
ParadiseMJ Posted July 10, 2014 Share Posted July 10, 2014 When I was a kid, my dad told me that his legs were the perfect length...long enough to reach the ground. Link to comment Share on other sites More sharing options...
danbyrambler Posted July 10, 2014 Share Posted July 10, 2014 I don't know who or what a JD is but OK. Link to comment Share on other sites More sharing options...
HOrnbrod Posted July 10, 2014 Share Posted July 10, 2014 Nice dog. Looks like a meercat. Link to comment Share on other sites More sharing options...
Akula69 Posted July 11, 2014 Share Posted July 11, 2014 That dude looks sad, depressed even.... Link to comment Share on other sites More sharing options...
metrictonner Posted July 11, 2014 Share Posted July 11, 2014 ahhhhh. someone who actually works off of a parts manual. Link to comment Share on other sites More sharing options...
HOrnbrod Posted July 11, 2014 Share Posted July 11, 2014 That dude looks sad, depressed even.... Actually she's a dudette meercat, and is coming into heat. She knows what's coming................. Link to comment Share on other sites More sharing options...
TheDude Posted August 3, 2014 Share Posted August 3, 2014 Hmm, my air box seems to be missing that sensor.. My spare air box doesn't have it either. Is it common for them to fall off? Link to comment Share on other sites More sharing options...
Eagle Posted August 3, 2014 Share Posted August 3, 2014 I'd love to be able to host them somewhere so they can be shared here in an as-needed basis. Photobucket. Flickr. Tinypics. Image Shack. All free photo hosting sites. Heck, I think even Kodak may now offer free photo hosting. Link to comment Share on other sites More sharing options...
cruiser54 Posted August 3, 2014 Share Posted August 3, 2014 I'd love to be able to host them somewhere so they can be shared here in an as-needed basis. Photobucket. Flickr. Tinypics. Image Shack. All free photo hosting sites. Heck, I think even Kodak may now offer free photo hosting. Tried photobucket and it didn't work. Kinda lost interest. Link to comment Share on other sites More sharing options...
ParadiseMJ Posted August 5, 2014 Share Posted August 5, 2014 Hmm, my air box seems to be missing that sensor.. My spare air box doesn't have it either. Is it common for them to fall off? The sensor is on the INSIDE of the airbox. It's just the nipples sticking out. (Nice sig line there) Link to comment Share on other sites More sharing options...
TheDude Posted August 5, 2014 Share Posted August 5, 2014 Hmm, my air box seems to be missing that sensor.. My spare air box doesn't have it either. Is it common for them to fall off? The sensor is on the INSIDE of the airbox. It's just the nipples sticking out. (Nice sig line there) Yes, I get that. On the inside I just have a nipple like on the outside with nothing there.. Link to comment Share on other sites More sharing options...
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