2.5dse 1996 autobox throwing its guts up on motorway

Saint.V8 said:

JM - I know this won't help our friend in question here - but what would you suggest is the best way of minimising GB failure other than regular filter and fluids??

No harsh acelration, braking carefully and well in time, into neutral or park at lights - any other tips??

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hp24 has the strengthened parts that fail with torque of diesel ,what you suggest is best ,lr service intervals are pushed to be as long as possible for ease of service times cost at dealer and selling fleet cars with economic service costs

There are companies who rebuild HP22s with the stronger bits from the HP24s - Ashcroft engineering for instance.

yes a few can but not all bits as box dimensions are different because of differences but to be fair replacement of std parts gives long enough life

a couple of years ago i lost all drive when towing it traffic
i put Lucas semi-synthetic sure-shift automatic transmission fluid in and not had a problem since with towing hope this helps. Plus thay do a Transmission Fix as well i put it in when i did the oil change as well
Lucas Oil Products (UK) - Heavy Duty & High Performance Lubricants

that will work with valve issues but not with blackened oil as it is a sure sign of clutch disintergration

Would it be cheaper to rebuild the box or replace it with a secondhand unit

stemac33 said:

Ok. so replaced cooked fluid with dexron III. and now it slips between 2nd and 3rd rev go up a second or two before it changes into 3rd . has the clutch packs gone or going.

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I had the flaring problem on mine on 1st to 2nd and 2nd to 3rd shifts. Lucas Transmission Fix sorted it for 2K miles, it's just started flaring on 2nd to 3rd again. Ordered more snake oil to give me time to get the box out of my donor car.

Is the Hp22 box the one with the dipstick

stemac33 said:

Is the Hp22 box the one with the dipstick

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Dip stick early cars no dip stick later cars, all HP22. Not sure if it was ever fitted to the HP24.

Datatek said:

Dip stick early cars no dip stick later cars, all HP22. Not sure if it was ever fitted to the HP24.

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If the HP24 was fitted to the 4.6's - Both Mine had dipsticks...

Where do i find the id plate for the box as the only thing i can find is a barcode. and borg warner

next to xyz switch

stemac33 said:

Where do i find the id plate for the box as the only thing i can find is a barcode. and borg warner

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Borg Warner is the transfer box, the auto box is ZF

Well bit the bullet. got a price for a second hand unit £300 + fitting £200 total £500 from emmotts of colne so hopefully back on the road tomorrow

stemac33 said:

Well bit the bullet. got a price for a second hand unit £300 + fitting £200 total £500 from emmotts of colne so hopefully back on the road tomorrow

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£200 for fitting is pretty reasonable these days - as it the £300 for the box.

Thought so too, and as he's a landrover breakers as well, will be using again, for any parts i need in the future.

Just a update been on phone to emmotts and he's just finishing putting everything back together so can pick it up in morning. He said somthing major serious has gone on the old box as there were loads of metal filling in the sump. So hopefully back on the road tomorrow. thanks for all your help

stemac33 said:

Well bit the bullet. got a price for a second hand unit £300 + fitting £200 total £500 from emmotts of colne so hopefully back on the road tomorrow

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I've just had a rebuild with new clutch plates at £2500 and a 12/12 guarantee ( Mackie's of Glasgow.) You've done well at that price.
Box had been losing oil : I had tried transmission fix , oil /filter changes and eventually it spewed whole oil .

Well got the beast back and she drives sweet as a nut almost like new. Many thanks for all your help once again. and im sure ill need it again at some point being a p38 owner. touch wood not in the immediate future