GKN Overdrive not working....

Dustin · Posted: Sun Feb 21, 2010 9:45 am Post subject: GKN Overdrive not working....

Hey Guys, Anyone has/had a GKN overdrive unit and it stopped working? One trip recently driving at 100kph it kicked itself out of overdrive. Now it wont engage at all. The light on gear stick just flashes. Any ideas? I'm meant to be going away this weekend and really would like it going...
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2005 110 Defender TD5 - Bonati Grey
If you can bolt it on or change it - I probably have!

cinders · New to Forum Joined: 02 Jul 2007 Posts: 22

I had one. I had two probs with it. the first one was the plug at the back of the control box had a dodgy pin. The female part was slightly wider than the others and would turn the overdrive off when you hit a bump in the road. Gkn sent me out a new harness and prob solved. the second one was the oil would blow out the breather on long trips which was a worry as it emptied itself out once. I put a little header tank in and that fixed that. I sold it to a mate and it was working fine for awhile and he's having probs with it. It won't disengage even at 10km p/hr. It's given him too much trouble so he's taken it out.
Do what I've done and get it chipped and put a disco transfer case in.
Hope this helps somewhat and good luck with it
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Dustin · Posted: Fri Mar 12, 2010 10:36 am Post subject:

I've had the unit for over 3 years now and this is the first problem I've had. I spoke to the guys at Devon4x4 and they diagnosed it as a speed sensor fault. I have bought a new one off them and it's on its way as we speak. Hopefully this will give me another 3 years of overdrive motoring!
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2005 110 Defender TD5 - Bonati Grey
If you can bolt it on or change it - I probably have!

cinders · New to Forum Joined: 02 Jul 2007 Posts: 22

we must of got a friday or monday one Smile

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There are fourbies, and then there are DEFENDERS

Dustin · Posted: Mon Mar 15, 2010 3:59 pm Post subject:

Part came in today! Not even 5 days since order. That's service from the UK! Ritters told me the last time they had to get a sensor it took them over a month????! Will fit it tonight and fingers crossed everything will be cool.
_________________
2005 110 Defender TD5 - Bonati Grey
If you can bolt it on or change it - I probably have!

Dustin · Posted: Thu Apr 29, 2010 11:07 am Post subject:

The old dodgy speed sensor in the GKN unit! All replaced and running like a dream again. 100kph @ 2100rpm here I come again!
_________________
2005 110 Defender TD5 - Bonati Grey
If you can bolt it on or change it - I probably have!

PeteG · Adventurer Joined: 11 Feb 2005 Posts: 870 Location: Eltham

So Dust

A couple of questions if I could Very Happy

1. What's the cost of the GKN fitted?
2. At the worst case when it plays up , does it just not engage and you're back to the normal 2500rpm at 100kmh or do you lose all drive?

Pete G
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Pete G Member Since 1998
02 110 Xtreme , 83 Stage one V8, 85 110 Isuzu , 03 Subaru Impreza, 02 Mazda MX5
Had: 97 Tdi Disco, 66 2A LWB ,73 LWB , 58 LWB Ute , 87 RR Hiline, 04 TD5 Disco, 64 SWB

Dustin · Posted: Thu Apr 29, 2010 12:08 pm Post subject:

I fitted over 3 years ago. I actually shipped it from the UK myself as I had a container coming over. I think from Ritters they were around $4k at the time. I'm not sure if they are making the GKNs anymore.

I can't remember where I saw it, maybe on www.devon4x4.com, but there is a new overdrive available... I'll track it down...

When the unit stopped working, the car was fine, I just couldn't engage overdrive.
_________________
2005 110 Defender TD5 - Bonati Grey
If you can bolt it on or change it - I probably have!

Dustin · Posted: Thu Apr 29, 2010 12:22 pm Post subject:

Found it - http://www.devon4x4.com/products_a/p14823c10107/0/rover-drive-overdrive.html
_________________
2005 110 Defender TD5 - Bonati Grey
If you can bolt it on or change it - I probably have!

PeteG · Adventurer Joined: 11 Feb 2005 Posts: 870 Location: Eltham

Excellent dust , Thanks

That's about $ 2300 with the current exchange rate Very Happy

Are you in Ivanhoe East Vic?
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Pete G Member Since 1998
02 110 Xtreme , 83 Stage one V8, 85 110 Isuzu , 03 Subaru Impreza, 02 Mazda MX5
Had: 97 Tdi Disco, 66 2A LWB ,73 LWB , 58 LWB Ute , 87 RR Hiline, 04 TD5 Disco, 64 SWB

Dustin · Posted: Thu Apr 29, 2010 12:34 pm Post subject:

Just down the road, I work on Waterdale Rd, Heidelberg West.
_________________
2005 110 Defender TD5 - Bonati Grey
If you can bolt it on or change it - I probably have!

PeteG · Adventurer Joined: 11 Feb 2005 Posts: 870 Location: Eltham

Did I sell you some Disco rims?
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Pete G Member Since 1998
02 110 Xtreme , 83 Stage one V8, 85 110 Isuzu , 03 Subaru Impreza, 02 Mazda MX5
Had: 97 Tdi Disco, 66 2A LWB ,73 LWB , 58 LWB Ute , 87 RR Hiline, 04 TD5 Disco, 64 SWB

Dustin · Posted: Thu Apr 29, 2010 12:39 pm Post subject:

Not to this little black duck.
_________________
2005 110 Defender TD5 - Bonati Grey
If you can bolt it on or change it - I probably have!

PeteG · Adventurer Joined: 11 Feb 2005 Posts: 870 Location: Eltham

Geez

There's 2 very schmick Bonnatti Grey Fenders around that area then Very Happy

Pete
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Pete G Member Since 1998
02 110 Xtreme , 83 Stage one V8, 85 110 Isuzu , 03 Subaru Impreza, 02 Mazda MX5
Had: 97 Tdi Disco, 66 2A LWB ,73 LWB , 58 LWB Ute , 87 RR Hiline, 04 TD5 Disco, 64 SWB

Dustin · Posted: Thu Apr 29, 2010 12:58 pm Post subject:

I think I've seen the one you're talking about at the Ivanhoe shops. It's not as sweet as mine! Wink

_________________
2005 110 Defender TD5 - Bonati Grey
If you can bolt it on or change it - I probably have!