1990 Jeep Wrangler Islander 4wd Question
I just bought a 1990 Jeep Wrangler with the 258 I6, 4wd and have a
couple of questions. The indidivual that I got it from said the 4wd was not currently working and when I had a friend take a look at it we were kind of noticing that all the vacuum tubes/connections had been removed. Is there any complete diagrams that would show in detail the 4wd vacuum system so I can get a good list of parts and be able to set it back up? They also replaced the air cleaner (with a simple air filter) and if there are some good diagrams on that I would greatly appreciate it as well since I believe there are a couple of connections off of there I will be needing. I have purchased a Chilton book but it doesn't really get into the 4wd stuff and the vacuum diagrams in there are desciptive but still hard to read for a newbie. Any help or direction to a site or place that I could get the 4wd reconstruction for dumbies would be helpful. Thanks in advance. D |
Re: 1990 Jeep Wrangler Islander 4wd Question
They sell the kit at the Stealership for around twenty:
http://www.----------.com/axleVacDiagram.jpg God Bless America, Bill O|||||||O mailto:-------------------- http://www.----------.com/ NewbieJeepGuy wrote: > > I just bought a 1990 Jeep Wrangler with the 258 I6, 4wd and have a > couple of questions. The indidivual that I got it from said the 4wd > was not currently working and when I had a friend take a look at it we > were kind of noticing that all the vacuum tubes/connections had been > removed. Is there any complete diagrams that would show in detail the > 4wd vacuum system so I can get a good list of parts and be able to set > it back up? They also replaced the air cleaner (with a simple air > filter) and if there are some good diagrams on that I would greatly > appreciate it as well since I believe there are a couple of connections > off of there I will be needing. I have purchased a Chilton book but it > doesn't really get into the 4wd stuff and the vacuum diagrams in there > are desciptive but still hard to read for a newbie. Any help or > direction to a site or place that I could get the 4wd reconstruction > for dumbies would be helpful. > > Thanks in advance. > > D |
Re: 1990 Jeep Wrangler Islander 4wd Question
They sell the kit at the Stealership for around twenty:
http://www.----------.com/axleVacDiagram.jpg God Bless America, Bill O|||||||O mailto:-------------------- http://www.----------.com/ NewbieJeepGuy wrote: > > I just bought a 1990 Jeep Wrangler with the 258 I6, 4wd and have a > couple of questions. The indidivual that I got it from said the 4wd > was not currently working and when I had a friend take a look at it we > were kind of noticing that all the vacuum tubes/connections had been > removed. Is there any complete diagrams that would show in detail the > 4wd vacuum system so I can get a good list of parts and be able to set > it back up? They also replaced the air cleaner (with a simple air > filter) and if there are some good diagrams on that I would greatly > appreciate it as well since I believe there are a couple of connections > off of there I will be needing. I have purchased a Chilton book but it > doesn't really get into the 4wd stuff and the vacuum diagrams in there > are desciptive but still hard to read for a newbie. Any help or > direction to a site or place that I could get the 4wd reconstruction > for dumbies would be helpful. > > Thanks in advance. > > D |
Re: 1990 Jeep Wrangler Islander 4wd Question
They sell the kit at the Stealership for around twenty:
http://www.----------.com/axleVacDiagram.jpg God Bless America, Bill O|||||||O mailto:-------------------- http://www.----------.com/ NewbieJeepGuy wrote: > > I just bought a 1990 Jeep Wrangler with the 258 I6, 4wd and have a > couple of questions. The indidivual that I got it from said the 4wd > was not currently working and when I had a friend take a look at it we > were kind of noticing that all the vacuum tubes/connections had been > removed. Is there any complete diagrams that would show in detail the > 4wd vacuum system so I can get a good list of parts and be able to set > it back up? They also replaced the air cleaner (with a simple air > filter) and if there are some good diagrams on that I would greatly > appreciate it as well since I believe there are a couple of connections > off of there I will be needing. I have purchased a Chilton book but it > doesn't really get into the 4wd stuff and the vacuum diagrams in there > are desciptive but still hard to read for a newbie. Any help or > direction to a site or place that I could get the 4wd reconstruction > for dumbies would be helpful. > > Thanks in advance. > > D |
Re: 1990 Jeep Wrangler Islander 4wd Question
For a good look at all the vacumn lines for the engine, start here:
http://home.sprynet.com/~dale02/list.htm The front axle disconnect system does not seem to be well documented. There is a black plastic line from the driver's side of the engine to the vac switch located on top of the transfercase. Then 3 lines going to the vac motor on the axle. Take a look at the vac motor on the axle, see if it still has the molded plug attached to the vac ports. With the engine running, tranny in neutral, transfer case in 2wd, CAREFULLy reach down to the front axle molded plug and see if you have slight vac on the yellow line, move it to 4wd, see if you have slight vac on green line. If no vac on either, you have a bad line going from the engine to the transfer case. If either green or yellow and doesn't switch, bad vac switch. If vac on one, no vac on the other, probably a bad vac harness. A lot of folks will tell you to replace the vac system with a cable, not a bad option. I stuck with the vac system since I switch from 2WD to 4WD a lot. Part numbers you may need: vac harness (complete) 5300-2033 About $75 new at the dealer only vac switch 5300-1101 If you post a valid e-mail address, I'll send you some diagrams. NewbieJeepGuy wrote: > I just bought a 1990 Jeep Wrangler with the 258 I6, 4wd and have a > couple of questions. The indidivual that I got it from said the 4wd > was not currently working and when I had a friend take a look at it we > were kind of noticing that all the vacuum tubes/connections had been > removed. Is there any complete diagrams that would show in detail the > 4wd vacuum system so I can get a good list of parts and be able to set > it back up? They also replaced the air cleaner (with a simple air > filter) and if there are some good diagrams on that I would greatly > appreciate it as well since I believe there are a couple of connections > off of there I will be needing. I have purchased a Chilton book but it > doesn't really get into the 4wd stuff and the vacuum diagrams in there > are desciptive but still hard to read for a newbie. Any help or > direction to a site or place that I could get the 4wd reconstruction > for dumbies would be helpful. > > Thanks in advance. > > D > |
Re: 1990 Jeep Wrangler Islander 4wd Question
For a good look at all the vacumn lines for the engine, start here:
http://home.sprynet.com/~dale02/list.htm The front axle disconnect system does not seem to be well documented. There is a black plastic line from the driver's side of the engine to the vac switch located on top of the transfercase. Then 3 lines going to the vac motor on the axle. Take a look at the vac motor on the axle, see if it still has the molded plug attached to the vac ports. With the engine running, tranny in neutral, transfer case in 2wd, CAREFULLy reach down to the front axle molded plug and see if you have slight vac on the yellow line, move it to 4wd, see if you have slight vac on green line. If no vac on either, you have a bad line going from the engine to the transfer case. If either green or yellow and doesn't switch, bad vac switch. If vac on one, no vac on the other, probably a bad vac harness. A lot of folks will tell you to replace the vac system with a cable, not a bad option. I stuck with the vac system since I switch from 2WD to 4WD a lot. Part numbers you may need: vac harness (complete) 5300-2033 About $75 new at the dealer only vac switch 5300-1101 If you post a valid e-mail address, I'll send you some diagrams. NewbieJeepGuy wrote: > I just bought a 1990 Jeep Wrangler with the 258 I6, 4wd and have a > couple of questions. The indidivual that I got it from said the 4wd > was not currently working and when I had a friend take a look at it we > were kind of noticing that all the vacuum tubes/connections had been > removed. Is there any complete diagrams that would show in detail the > 4wd vacuum system so I can get a good list of parts and be able to set > it back up? They also replaced the air cleaner (with a simple air > filter) and if there are some good diagrams on that I would greatly > appreciate it as well since I believe there are a couple of connections > off of there I will be needing. I have purchased a Chilton book but it > doesn't really get into the 4wd stuff and the vacuum diagrams in there > are desciptive but still hard to read for a newbie. Any help or > direction to a site or place that I could get the 4wd reconstruction > for dumbies would be helpful. > > Thanks in advance. > > D > |
Re: 1990 Jeep Wrangler Islander 4wd Question
For a good look at all the vacumn lines for the engine, start here:
http://home.sprynet.com/~dale02/list.htm The front axle disconnect system does not seem to be well documented. There is a black plastic line from the driver's side of the engine to the vac switch located on top of the transfercase. Then 3 lines going to the vac motor on the axle. Take a look at the vac motor on the axle, see if it still has the molded plug attached to the vac ports. With the engine running, tranny in neutral, transfer case in 2wd, CAREFULLy reach down to the front axle molded plug and see if you have slight vac on the yellow line, move it to 4wd, see if you have slight vac on green line. If no vac on either, you have a bad line going from the engine to the transfer case. If either green or yellow and doesn't switch, bad vac switch. If vac on one, no vac on the other, probably a bad vac harness. A lot of folks will tell you to replace the vac system with a cable, not a bad option. I stuck with the vac system since I switch from 2WD to 4WD a lot. Part numbers you may need: vac harness (complete) 5300-2033 About $75 new at the dealer only vac switch 5300-1101 If you post a valid e-mail address, I'll send you some diagrams. NewbieJeepGuy wrote: > I just bought a 1990 Jeep Wrangler with the 258 I6, 4wd and have a > couple of questions. The indidivual that I got it from said the 4wd > was not currently working and when I had a friend take a look at it we > were kind of noticing that all the vacuum tubes/connections had been > removed. Is there any complete diagrams that would show in detail the > 4wd vacuum system so I can get a good list of parts and be able to set > it back up? They also replaced the air cleaner (with a simple air > filter) and if there are some good diagrams on that I would greatly > appreciate it as well since I believe there are a couple of connections > off of there I will be needing. I have purchased a Chilton book but it > doesn't really get into the 4wd stuff and the vacuum diagrams in there > are desciptive but still hard to read for a newbie. Any help or > direction to a site or place that I could get the 4wd reconstruction > for dumbies would be helpful. > > Thanks in advance. > > D > |
Re: 1990 Jeep Wrangler Islander 4wd Question
This site might help you out some:
http://home.sprynet.com/~dale02/list.htm The Haynes 'CJ' manual is the best one to have for your engine and it's electrics. That book has great detail on the 258. If all the vacuum lines are off, then the computer will have gone into 'limp home' mode clamping down on the timing and carb mix and the engine will run like a bag of dirt. If you want to put it all back stock, see the link I posted above. If you want to put the computer out of your misery it can be done by simply adding two new wires and hooking the orange and purple wires at the ignition module to the orange and purple at the distributor. http://home.sprynet.com/~dale02/ignmods.htm You then need to set the timing manually and set the carb mix up manually. The carb does have mix screws hidden down front that might need a drill or saw to get at. When setting up the mix, I believe the stepper motor's pins should be in the middle of their travel where they work stock to get the proper high speed running. The computer bypass is called the 'Nutter' after the gent that posted it. He set his carb pins full rich. This give lousy gas mileage and top end performance. You can try both. I can adjust my carb pins from up top with needle nose pliers or a mini screwdriver. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) NewbieJeepGuy wrote: > > I just bought a 1990 Jeep Wrangler with the 258 I6, 4wd and have a > couple of questions. The indidivual that I got it from said the 4wd > was not currently working and when I had a friend take a look at it we > were kind of noticing that all the vacuum tubes/connections had been > removed. Is there any complete diagrams that would show in detail the > 4wd vacuum system so I can get a good list of parts and be able to set > it back up? They also replaced the air cleaner (with a simple air > filter) and if there are some good diagrams on that I would greatly > appreciate it as well since I believe there are a couple of connections > off of there I will be needing. I have purchased a Chilton book but it > doesn't really get into the 4wd stuff and the vacuum diagrams in there > are desciptive but still hard to read for a newbie. Any help or > direction to a site or place that I could get the 4wd reconstruction > for dumbies would be helpful. > > Thanks in advance. > > D |
Re: 1990 Jeep Wrangler Islander 4wd Question
This site might help you out some:
http://home.sprynet.com/~dale02/list.htm The Haynes 'CJ' manual is the best one to have for your engine and it's electrics. That book has great detail on the 258. If all the vacuum lines are off, then the computer will have gone into 'limp home' mode clamping down on the timing and carb mix and the engine will run like a bag of dirt. If you want to put it all back stock, see the link I posted above. If you want to put the computer out of your misery it can be done by simply adding two new wires and hooking the orange and purple wires at the ignition module to the orange and purple at the distributor. http://home.sprynet.com/~dale02/ignmods.htm You then need to set the timing manually and set the carb mix up manually. The carb does have mix screws hidden down front that might need a drill or saw to get at. When setting up the mix, I believe the stepper motor's pins should be in the middle of their travel where they work stock to get the proper high speed running. The computer bypass is called the 'Nutter' after the gent that posted it. He set his carb pins full rich. This give lousy gas mileage and top end performance. You can try both. I can adjust my carb pins from up top with needle nose pliers or a mini screwdriver. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) NewbieJeepGuy wrote: > > I just bought a 1990 Jeep Wrangler with the 258 I6, 4wd and have a > couple of questions. The indidivual that I got it from said the 4wd > was not currently working and when I had a friend take a look at it we > were kind of noticing that all the vacuum tubes/connections had been > removed. Is there any complete diagrams that would show in detail the > 4wd vacuum system so I can get a good list of parts and be able to set > it back up? They also replaced the air cleaner (with a simple air > filter) and if there are some good diagrams on that I would greatly > appreciate it as well since I believe there are a couple of connections > off of there I will be needing. I have purchased a Chilton book but it > doesn't really get into the 4wd stuff and the vacuum diagrams in there > are desciptive but still hard to read for a newbie. Any help or > direction to a site or place that I could get the 4wd reconstruction > for dumbies would be helpful. > > Thanks in advance. > > D |
Re: 1990 Jeep Wrangler Islander 4wd Question
This site might help you out some:
http://home.sprynet.com/~dale02/list.htm The Haynes 'CJ' manual is the best one to have for your engine and it's electrics. That book has great detail on the 258. If all the vacuum lines are off, then the computer will have gone into 'limp home' mode clamping down on the timing and carb mix and the engine will run like a bag of dirt. If you want to put it all back stock, see the link I posted above. If you want to put the computer out of your misery it can be done by simply adding two new wires and hooking the orange and purple wires at the ignition module to the orange and purple at the distributor. http://home.sprynet.com/~dale02/ignmods.htm You then need to set the timing manually and set the carb mix up manually. The carb does have mix screws hidden down front that might need a drill or saw to get at. When setting up the mix, I believe the stepper motor's pins should be in the middle of their travel where they work stock to get the proper high speed running. The computer bypass is called the 'Nutter' after the gent that posted it. He set his carb pins full rich. This give lousy gas mileage and top end performance. You can try both. I can adjust my carb pins from up top with needle nose pliers or a mini screwdriver. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) NewbieJeepGuy wrote: > > I just bought a 1990 Jeep Wrangler with the 258 I6, 4wd and have a > couple of questions. The indidivual that I got it from said the 4wd > was not currently working and when I had a friend take a look at it we > were kind of noticing that all the vacuum tubes/connections had been > removed. Is there any complete diagrams that would show in detail the > 4wd vacuum system so I can get a good list of parts and be able to set > it back up? They also replaced the air cleaner (with a simple air > filter) and if there are some good diagrams on that I would greatly > appreciate it as well since I believe there are a couple of connections > off of there I will be needing. I have purchased a Chilton book but it > doesn't really get into the 4wd stuff and the vacuum diagrams in there > are desciptive but still hard to read for a newbie. Any help or > direction to a site or place that I could get the 4wd reconstruction > for dumbies would be helpful. > > Thanks in advance. > > D |
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