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BigJimnyMeet (North) 2024 (12 Jan 2024)


BigJimnyMeet 2024

14th July 2024
Parkwood Nr. Leeds

Booking now open - Discount for additional vehicles

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Older Jimny 4WD faillure

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08 Dec 2022 13:47 #246259 by thieuster
My 2001 Jimny has done all its miles on paved roads since last Spring. Yesterday, I wanted to take the car off round (We live on an estate with woodlands) and noticed that the 4H kept blinking instead of being 'permanently green'. An indication that the 4WD will not engage. I read that it's something that happens regularly on older Jimnys. I checked the electrics but all was good in that department.

What to do? Check all the pipework etc? Or making the step to old-school hand-operated front wheel locks, bypassing the original system? The system I had on my  Samurai in the late '90s.

What's your experience and advice?

Chronologically:
- 1959 Triumph TR3A
- 1970 Saab 96V4
- 1973 Saab 95V4
- 2001 Suzuki Jimny
- 2020 Honda CR-V Hybrid 4x4
Gone:
- 1973 Porsche 914
- 1993 Suzuki Samurai
New:
- 1991 Peugeot 205 automatic with < 60K miles!

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08 Dec 2022 14:50 #246260 by DrRobin
Replied by DrRobin on topic Older Jimny 4WD faillure
Have you had a look at the Wiki page on diagnosing faults in the 4WD:

www.bigjimny.com/mediawiki/index.php/4WD...the_older_4WD_system

I am assuming you have a lever rather than switches?

You could get a flashing green light if the transfer box switch has failed or if the vacuum system has failed.

It could be simple, the switch or a leak in the vacuum system.

Hope that helps?

Robin

2020 blue SZ5 (one of the last to be registered in the UK)
Ex 2011 Blue Jimny SZ4
Northumberland Jimny Blog

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08 Dec 2022 15:22 #246261 by thieuster
Replied by thieuster on topic Older Jimny 4WD faillure
My car has a lever system. A nice job for the week between Christmas and NY when I can use a car ramp at a shop.

Chronologically:
- 1959 Triumph TR3A
- 1970 Saab 96V4
- 1973 Saab 95V4
- 2001 Suzuki Jimny
- 2020 Honda CR-V Hybrid 4x4
Gone:
- 1973 Porsche 914
- 1993 Suzuki Samurai
New:
- 1991 Peugeot 205 automatic with < 60K miles!

Please Log in or Create an account to join the conversation.

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08 Dec 2022 19:51 - 08 Dec 2022 19:55 #246265 by Busta
Replied by Busta on topic Older Jimny 4WD faillure
First thing is to check the front wheel bearings. When they start to go they can cause the vacuum system to leak. Checking them first can save a lot of frustration!

If they are both good then it will be a simple leak in one of the pipes. We can rule out the switch on the transfer case because if that was faulty you would have no 4wd light at all.

The easiest fix is to run full lengths of new hose (I use 4mm ID PVC hose, about £10 for 10m on eBay plus two 4mm tees), cable tying it to the now redundant original hoses.

My preferred fix is to replace the hoses and at the same time re-route them along the brake pipes, around the engine bay and down the brake hoses. This keeps them out of harms way and involves less laying on the ground!

This picture will help you get the correct hoses to the correct places on the hub.

 

I know many choose manual hubs as a simple option, but personally I find the vacuum system super convenient and simple to maintain.
Attachments:
Last edit: 08 Dec 2022 19:55 by Busta.

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09 Dec 2022 12:33 #246274 by thieuster
Replied by thieuster on topic Older Jimny 4WD faillure
Thanks for that! As said, the week between Xmas and NY will be perfect for that investigation.

Chronologically:
- 1959 Triumph TR3A
- 1970 Saab 96V4
- 1973 Saab 95V4
- 2001 Suzuki Jimny
- 2020 Honda CR-V Hybrid 4x4
Gone:
- 1973 Porsche 914
- 1993 Suzuki Samurai
New:
- 1991 Peugeot 205 automatic with < 60K miles!

Please Log in or Create an account to join the conversation.

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