Fixed the timing belt, now it's the tranny.... - Defender Source
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  #1  
Old February 7th, 2013, 09:50 PM
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Neill Thornton
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Fixed the timing belt, now it's the tranny....

So..... the engine is finally all back together after my never ending tale of woe (see the "Another Snapped Timing Belt" thread). Today I finally got to jump in and actually go somewhere.

However, there is something wrong with the ZF tranny. When I select Drive, it immediately catches, no problem there. However, as soon as I give it gas and move more than about 10 feet you can feel it shift from first to second to third very rapidly, say within 2 seconds.

Then, the truck seems stuck in 3rd, never making it to 4th. But if I select "3" on the gear change it clearly downshifts back to something lower. In fact, I can keep doing this to "2" and "1" and get lower gears. However, when I get down to first it seems to be some ridiculous granny gear that can only get to about 10 MPH.

So somehow I have magically gained extra gears (no 4th, but a "3" "2" and "1" selectable gear) and can't get above about 40 MPH.

The only amplifying info is that I had a leak in one of my cooler lines, so I had to add fluid to get the level right today.

Ideas?
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  #2  
Old February 7th, 2013, 10:31 PM
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Robert Davis
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A few questions?

Did the transmission work fine prior the latest drive?

Is it a TDI automatic or a V8 automatic adapted to the TDI engine?
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  #3  
Old February 7th, 2013, 10:34 PM
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Neill Thornton
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Yeah, it worked fine before the engine died, and it's a 300Tdi auto from a Disco.
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Old February 8th, 2013, 01:54 AM
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Are you sure your transfer case is in high range ?
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  #5  
Old February 8th, 2013, 03:46 AM
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Kickdown adjustment cable on the auto box? i know on the V8's it's on the throttle linkage, not sure where its at on a TDI..
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Old February 8th, 2013, 08:17 AM
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Are you sure your transfer case is in high range ?
tha was my thought also
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Old February 8th, 2013, 08:57 AM
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Sounds a lot like a kickdown cable setting issue. I've not seen it first hand on a 300tdi disco, but from what I've read one needs to remove the gearbox sump to get access to the adjustment linkage.

The control unit has a cam that could be the problem if a linkage adjustment doesn't solve the problem. I think it boils down to tighter the cable = thinks you have more throttle and thus shifts later. More slack = earlier shifting, which sounds like the case with your unit.

While you're in there it would be worthwhile to check the oil and make sure it doesn't smell burnt.
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Old February 8th, 2013, 10:41 AM
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Quote:
Originally Posted by Dennis View Post
Are you sure your transfer case is in high range ?
Quote:
Originally Posted by ron View Post
Are you sure your transfer case is in high range ?
tha was my thought also
Oh man, this could be entirely possible... I didn't even freaking look. I will feel pretty damn stupid if it's just this.

Quote:
Originally Posted by psykokid View Post
Kickdown adjustment cable on the auto box? i know on the V8's it's on the throttle linkage, not sure where its at on a TDI..
Well the throttle side is on the injection pump. Otherwise the tranny is pretty much the same as on the V8, and yeah the adjuster is deep within the transmission.

I'll be up and about and in front of the truck shortly... checking the transfer case is job #1.
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Old February 8th, 2013, 11:18 AM
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You in low the 1-2 change takes place almost immediately after you move off
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I don't know about the brakes, only their unreliability.
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Old February 8th, 2013, 12:42 PM
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Well, OK. Lesson learned. There is a saying in the medical community - "When you hear hoofbeats, think Horses, not Zebras". In otherwords, it's probably a simple problem and not some crazy issue.

Remember to put the transfer case into High Range before driving.

I'm gonna go out for a little test drive to check the cooling and overall engine performance, but things look pretty good so far.
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Old February 8th, 2013, 01:09 PM
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Glad it was easy!
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Old February 8th, 2013, 05:42 PM
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Quote:
Originally Posted by navydevildoc View Post

Remember to put the transfer case into High Range before driving.
Simple fixes are the best
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Old February 8th, 2013, 05:50 PM
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hurrah!
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Old February 8th, 2013, 06:04 PM
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K i s s
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  #15  
Old February 8th, 2013, 08:58 PM
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Remember to adjust valve clearance again after a few hundred miles.
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Old February 9th, 2013, 03:41 AM
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I had a similar thing here with my 110... handling issues.

The front dampers were shot, so changed them to new OME's (i have these all round) and the frint springs also (fitted a husky 8000 winch, and tried HD springs but they were too stiff)

Handling was aweful, wallowing all over the road. I took the rear dampers off, they were fine. tried fitting the double rear ones (I have the brackets all fitted ready for any *heavy* loads i might carry.... was too stiff then (empty loadbed)

all bushes and links were fine.

Then I pumped the tyres back up to where they should be..... handles a treat now! LOL!!

Always the simple things.
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  #17  
Old February 9th, 2013, 04:17 AM
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One more piece of evidence to support the think of the simplest and cheapest thing first.
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A friend of mine runs a land rover / range rover specialty repair shop. Based on his experience, they are capable of stopping anywhere, anytime, at any cost.

I don't know about the brakes, only their unreliability.
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