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Another 4x4 Vacuum question, apologies in advance
- delica88
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11 Jan 2019 11:09 #200435
by delica88
Another 4x4 Vacuum question, apologies in advance was created by delica88
Hi there, just had the clutch done in my girlfriends jimny, picked it up yesterday, went to select 4 wheel drive and there is no green light illuminating. I can here the revs drop ever so slightly so I can tell something is trying to do something. I got the jimny on a ramp about an hour ago, and one of the vacuum lines has broken typically (was working prior to clutch work.) I understand that if a vacuum line is broken you have a flashing green light, when in my case there is none.
what repair kits are available for this kind of break? and why do I have no green 4x4 light?
Im looking to fit a 2" lift kit as well at some point so can fit an aftermarket kit if there are ones available.
Thanks
jimmy
what repair kits are available for this kind of break? and why do I have no green 4x4 light?
Im looking to fit a 2" lift kit as well at some point so can fit an aftermarket kit if there are ones available.
Thanks
jimmy
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11 Jan 2019 18:16 - 11 Jan 2019 18:18 #200479
by Scimike
Yokohama Geolanders, Sony head unit, NAUTILUS Air Horn, DRL conversion, Rear cargo space, Elvis Bobblehead, transfer Guard, Indian hanging Elephant, Koni Heavy track dampers, Custom SS exhaust, Voodoo Doll, Adventure Rack with LED ight bar, vintage ERIBA caravan usually attached (yes it's slow)
Replied by Scimike on topic Another 4x4 Vacuum question, apologies in advance
Hi, no need to apologise for the question on the vacuum hubs. Unfortunately I am no expert on them but will just start the conversation with my own knowledge limited opinion. :laugh:
They do appear an eventual point of failure on the Jimny, as such many off road enthusiasts just remove them and replace with manual hubs. I fully understand this and would consider the same if your goal is an off road machine. I only mention this as you indicate you intend to lift in the future.
The drop in rpm is most likely caused by the massive leak in your vacuum system, so before you do anymore fix the broken pipe you have found. The metal pipes that distribute the vacuum are prone to rust and will cost about £170 for a new set. You can replace them totally with plastic tube, I plan to replace mine with a new set fabricated from brake pipe. I simply feel like the challenge.
So start by fixing that big break in the pipe as best you can if you wish to keep them, or have a search for AVM hubs.
They do appear an eventual point of failure on the Jimny, as such many off road enthusiasts just remove them and replace with manual hubs. I fully understand this and would consider the same if your goal is an off road machine. I only mention this as you indicate you intend to lift in the future.
The drop in rpm is most likely caused by the massive leak in your vacuum system, so before you do anymore fix the broken pipe you have found. The metal pipes that distribute the vacuum are prone to rust and will cost about £170 for a new set. You can replace them totally with plastic tube, I plan to replace mine with a new set fabricated from brake pipe. I simply feel like the challenge.
So start by fixing that big break in the pipe as best you can if you wish to keep them, or have a search for AVM hubs.
Yokohama Geolanders, Sony head unit, NAUTILUS Air Horn, DRL conversion, Rear cargo space, Elvis Bobblehead, transfer Guard, Indian hanging Elephant, Koni Heavy track dampers, Custom SS exhaust, Voodoo Doll, Adventure Rack with LED ight bar, vintage ERIBA caravan usually attached (yes it's slow)
Last edit: 11 Jan 2019 18:18 by Scimike.
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11 Jan 2019 19:16 #200497
by Riccy
J999 MNY, ULYSSES M18 VVT with ITB's Dyno tested at 130hp
Pickup/tipper, R7me gearbox & 6.4 Rocklobster, 31" Toyo MT, 2x ARB air locker 3.9 diffs in braced axles, 6" total lift, Floating rear conversion, Raptor painted, CB, Recaro's, Caged, etc, etc...
www.youtube.com/user/riclemus
Replied by Riccy on topic Another 4x4 Vacuum question, apologies in advance
AVM 457HP (HP denotes they are heavy duty red top ones), for £110 +vat/del...
www.ks-international.com/free-wheel-hub-...air-manual-6424.html
best you can get and a really good price
www.ks-international.com/free-wheel-hub-...air-manual-6424.html
best you can get and a really good price

J999 MNY, ULYSSES M18 VVT with ITB's Dyno tested at 130hp
Pickup/tipper, R7me gearbox & 6.4 Rocklobster, 31" Toyo MT, 2x ARB air locker 3.9 diffs in braced axles, 6" total lift, Floating rear conversion, Raptor painted, CB, Recaro's, Caged, etc, etc...
www.youtube.com/user/riclemus
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- jackonlyjack
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11 Jan 2019 19:23 #200498
by jackonlyjack
Replied by jackonlyjack on topic Another 4x4 Vacuum question, apologies in advance
If the jimny has a transfer stick just buy the hubs Riccy posted best option

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- delica88
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11 Jan 2019 22:17 #200524
by delica88
Replied by delica88 on topic Another 4x4 Vacuum question, apologies in advance
Thanks for the input guys it’s much appreciated, I want to retain the tranfer stock option as this is my girlfriends car and I know she would rather be able to transfer in car rather than out. What plastic pipe would I use? I was wondering if there were aftermarket kits already available for the vacuum systems on the jimnys. Or is this simply something I have to make and fit.
More importantly I’m worried about the fact there is no light illuminating on the dash for the 4 wheel system, everywhere I read people with vacuum leaks have a flashing green light where in my case there is nothing when I select 4x4?
Thanks
More importantly I’m worried about the fact there is no light illuminating on the dash for the 4 wheel system, everywhere I read people with vacuum leaks have a flashing green light where in my case there is nothing when I select 4x4?
Thanks
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11 Jan 2019 22:28 #200526
by adrianr
About Wee Jimmy : www.bigjimny.com/index.php/forum/8-my-ji...-first-jimny?start=0
Replied by adrianr on topic Another 4x4 Vacuum question, apologies in advance
Silicone hose works well to replace the factory hoses.
About Wee Jimmy : www.bigjimny.com/index.php/forum/8-my-ji...-first-jimny?start=0
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