AWD Transmission: - Roll-back on hill

DG651 · Feb 28th, 2012, 22:06

Sorry if this is a basic question but what degree of incline/hill should it take before my car rolls back in Idle/Drive and no brake. Naturally, I don't expect the car to hold on a steep hill, but what are the experiences of others. I realise it is impossible to be specific, but I can remember my Auto Saab holding on the hill outside my house whereas my XC90 won't hold without increased revs. Is this a sign of a worn box?

Clan · Feb 28th, 2012, 23:21

no its fine , there are no specifications for this , it just depends on how much creep there is in D , with an idle speed of 700 rpm you cant expect much creep in D on idle , Anyway too much creep heats the gearbox and uses fuel remember .

chb · Feb 29th, 2012, 07:02

Very gentle slopes and it holds steady. Something like 1 in 10.
Any steeper and it rolls back, but only needs a tiny throttle of even better...brake to hold steady.

DG651 · Mar 1st, 2012, 12:39

Thank you for your reassurances - much valued. I suppose I was expecting too much of my car on a slope known locally as Angina Hill.

Feb 28th, 2012, 22:06	#1
DG651 Junior Member Last Online: Jun 14th, 2020 09:44 Join Date: Jan 2012 Location: Forest of Dean	Roll-back on hill Sorry if this is a basic question but what degree of incline/hill should it take before my car rolls back in Idle/Drive and no brake. Naturally, I don't expect the car to hold on a steep hill, but what are the experiences of others. I realise it is impossible to be specific, but I can remember my Auto Saab holding on the hill outside my house whereas my XC90 won't hold without increased revs. Is this a sign of a worn box?

Feb 28th, 2012, 23:21	#2
Clan Experienced Member Last Online: Today 16:00 Join Date: Jun 2007 Location: L/H side	no its fine , there are no specifications for this , it just depends on how much creep there is in D , with an idle speed of 700 rpm you cant expect much creep in D on idle , Anyway too much creep heats the gearbox and uses fuel remember . __________________ My comments are only based on my opinions and vast experience .

Mar 1st, 2012, 12:39	#4
DG651 Junior Member Last Online: Jun 14th, 2020 09:44 Join Date: Jan 2012 Location: Forest of Dean	Reassured Thank you for your reassurances - much valued. I suppose I was expecting too much of my car on a slope known locally as Angina Hill.

Feb 29th, 2012, 07:02	#3
chb Master Member Last Online: Dec 22nd, 2023 10:53 Join Date: Dec 2006 Location: Leeds	Very gentle slopes and it holds steady. Something like 1 in 10. Any steeper and it rolls back, but only needs a tiny throttle of even better...brake to hold steady.

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