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Range Rover P38 2001 - Transmission fault #

Posted by Chris Angus on November 19, 2012, 2:58 pm

Year of Manufacture *: 2001

Hi all, don't have much experience with these and checked what I can.

It's automatic and slow to set off as if the clutch is slipping, if it was a conventional manual and clutch, revs increase 1500-2000rpm and it just slowly pulls away.
There are no fault codes and fluid is topped up, just wondering if there's anything I can check that might give a clue, I'm suspecting box is knackered or torque convertor.

Chris

Re: Rangerover P38 transmission fault

Posted by James Eardley <iframe src='https://members4.boardhost.com/ukautotalk/info/user=ukat3143' width='330' height='300' border=0 style='border:none;'> on November 19, 2012, 8:11 pm, in reply to "Rangerover P38 transmission fault"

Hi Chris

I too do not have very much experience when it comes to automatic transmission.

I do know that when most auto's have an electrical problem it will probably default to 3rd gear, meaning it will have a slow take off.

What scan tool are you using to connect to the transmission?

Is there any live data available?

After the vehicle has set off does it change through the gears are stay in just 1 gear?

What engine size is it?

James

Re: Rangerover P38 transmission fault

Posted by Alwyn james <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT1546' width='330' height='300' border=0 style='border:none;'> on November 19, 2012, 9:08 pm, in reply to "Re: Rangerover P38 transmission fault"
Alwyn James

Hi Chris

I once had one of these with no drive at all and like yours with no fault codes.A new filter in box and fluid change cured it.

Regards Alwyn

Re: Rangerover P38 transmission fault

Posted by Vince Mosley <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT2919' width='330' height='300' border=0 style='border:none;'> on November 20, 2012, 9:24 am, in reply to "Re: Rangerover P38 transmission fault"
Vince Mosley

I agree with Alwyn. I have cured auto boxes with this problem , so long as you catch it early enough. Even managed to cure the BMW X5 !

Re: Rangerover P38 transmission fault

Posted by Chris Angus <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT5111' width='330' height='300' border=0 style='border:none;'> on November 20, 2012, 1:08 pm, in reply to "Rangerover P38 transmission fault"

Thanks for the replies, I checked as much as I could, all gears were selectable and changed as they should. I have a disco 4 and the gear changes and revs are similar, I've put it down how it is, big heavy car with a crappy 2.5 lump.
I did find the rear brakes were stuck on, so that didn't help.

Chris

Re: Rangerover P38 transmission fault

Posted by Mark Carter <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT1428' width='330' height='300' border=0 style='border:none;'> on November 20, 2012, 3:36 pm, in reply to "Re: Rangerover P38 transmission fault"
Mark Carter

I've had two of these now where the pump timing has been out and caused the same issues.

Check the duty cycle of the timing solenoid at idle when warm, it should be 45-55%

If you are careful you can adjust it whilst running.

Mark

Modern cars, Its all wizardry and witchcraft

Re: Rangerover P38 transmission fault

Posted by Chris Angus <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT5111' width='330' height='300' border=0 style='border:none;'> on November 20, 2012, 4:07 pm, in reply to "Re: Rangerover P38 transmission fault"

Thanks Mark, will check that tomorrow.

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