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DISCO3.CO.UK > Technical (D3)

POSSIBLE GEAR BOX FAULT

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SKYWRITER

Member Since: 02 Jul 2007
Location: MERSEYSIDE
Posts: 86

2008 Discovery 3 TDV6 XS Auto Stornoway Grey

POSSIBLE GEAR BOX FAULT

HI EVERY ONE ON THE DISCO 3 FORUM , DO YOU THINK I HAVE A FAULT WITH MY CLUTCH/GEARBOX WHEN SELECTING ANY GEAR IN LOW RATIO THE CAR MOVES FORWARD A COUPLE OF INCHES IT WAS DO-ING THE SAME IN HIGH RATIO SO THE DEALER CHANGE THE MASTER CYLINDER ITS STOPPED DOING IT IN HIGH BUT CONTINUES TO DO THE SAME IN LOW ANYBODY GOT ANY THOUGHTS WHAT THE FAULT MAY BE, OR IS THIS THE NORM IN LOW RATIO THANKS IN ADVANCE BAZ.

2nd Jul 2007 6:46 pm

Very Annoyed

Member Since: 19 Nov 2005
Location: Up there, past the strange people and the sheep.
Posts: 3698

First thing to do is take your cap lock off! Loving the power of the TDV8!

2nd Jul 2007 6:52 pm

simon

Member Since: 11 Jan 2005
Location: Shropshire
Posts: 18296

2011 Discovery 4 3.0 SDV6 HSE Auto Fuji White

How do you mean moves forward ?

When you select Low range the gearbox is in neutral.

When changing gear the D3 will continue to pull as soon as the clutch bites - due to the torque.

Not quite seeing what you mean.

Assuming yours is a manual 'S' according to your profile. If not then you need an auto box chappie to get their head round it

2nd Jul 2007 7:04 pm

SKYWRITER

Member Since: 02 Jul 2007
Location: MERSEYSIDE
Posts: 86

hi simon perhaps i am not being very clear , when in low ratio and go to select first gear (clutch depressed) the car moves forward a couple of inches as you engaged the gear then stops ,does yours do it ? can you try hope this is abit clearer regards baz.

2nd Jul 2007 7:34 pm

10forcash

Member Since: 09 Jun 2005
Location: Ubique
Posts: 16534

2007 Discovery 3 TDV6 HSE Manual Zermatt Silver

Yep, both of mine have done this - although if you're driving correctly (offroad) you should have your foot on the brake until you reach the bite point of the clutch

The reason this behaviour happens is that the torque transmitted through the layshaft during synchronisation of the gears is enough to move the vehicle in low ratio slightly

2nd Jul 2007 7:43 pm

SKYWRITER

Member Since: 02 Jul 2007
Location: MERSEYSIDE
Posts: 86

thanks for your input on that ,the reason i was concerned is i first noted this on the high ratio it moved forward when i selected first gear the dealer said it was a faulty master cylinder, is this a common fault with new disco"s ? just to change the theme what engine oil are you guys useing it says 5/30 or oils to ab4 spec

2nd Jul 2007 10:08 pm

simon

Member Since: 11 Jan 2005
Location: Shropshire
Posts: 18296

You can buy oil for the TDV6 from your dealer at pretty reasonable prices.

2nd Jul 2007 10:15 pm

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