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17th March 2020, 12:09 | #1 |
Gets stuck in
Rover 75 Saloon & Tourer, 9th & 10th Rovers Join Date: Nov 2013
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Auto Gearbox Creep. 2001 2.5 V6
Not difficult to live with, but certainly not "right" either.
Nothing in Haynes, so any help appreciated. Tickover is a steady 600 rpm, put car into D, or R, without foot on brake, and the car actually moves off. I used the word creep in the title, to simply explain the problem, it is far more than a creep. I suspect that it is likely to be whatever the transmission control unit is called, and hoping that it might be a T4 adjustment / setting. Thanks for any assistance. Mike
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Presently 2004 75 CDTi auto Connoisseur Tourer - White Gold 2001 75 2.5 auto Connoisseur Saloon - White Gold Previously 2002 75 1.8 auto Club SE, 2000 75 1.8 auto Classic SE (Company Car) 1997 420 (Company Car) 1996 216 cabriolet, 198? 213 VDP 1986 SD1 V8 VDP, 1968 2000TC, 1966 2000. |
17th March 2020, 12:26 | #2 |
I really should get out more.......
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Not sure I understand what you're asking. If you're asking is it normal for an automatic to move in D or R if the brake is not engaged then yes, all autos move if D or R is selected.
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17th March 2020, 12:32 | #3 |
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Thanks Vitesse, but not still on 600 rpm.
All autos I've previously had, will stay motionless on tickover. Some might loose a few RPM (also normal) but this one stays rock solid on 600rpm, and probably moves at a walking pace, although I've not analysed it to that extent. Thanks again. Mike
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Presently 2004 75 CDTi auto Connoisseur Tourer - White Gold 2001 75 2.5 auto Connoisseur Saloon - White Gold Previously 2002 75 1.8 auto Club SE, 2000 75 1.8 auto Classic SE (Company Car) 1997 420 (Company Car) 1996 216 cabriolet, 198? 213 VDP 1986 SD1 V8 VDP, 1968 2000TC, 1966 2000. |
17th March 2020, 12:51 | #4 |
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Both my autos also creep on tickover, can understand it with the torque from a diesel 75, but my little 1.3 petrol Daihatsu also does it.
I've always thought this to be normal and useful for creeping along in very heavy traffic. |
17th March 2020, 13:12 | #5 |
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V6 2ltr auto in copperleaf +CDTI Auto in Royal Blue on loan to Son Join Date: Jul 2010
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Mine does it.
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17th March 2020, 13:15 | #6 |
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rover 75 cdti(rhd), MG ZR(lhd), MG TF(lhd), MG TF(rhd), mini mpi (lhd), Renault megane III (awful) Join Date: Mar 2014
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Mine does it, totally normal. I've never been in an automatic that DOESN'T do it !
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17th March 2020, 13:24 | #7 |
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Well Steve, my eyes have been opened.
I've just done some quick internet research, and apparently there have been some developments (numerous I imagine) with auto boxes. One such design, or maybe a generation, is called a DCT, and these boxes are indeed designed to creep. DCT stands for Dual Clutch Transmission, with the clutches being computer controlled - and don't our 75's just love computer control. So, accepting now that the creep itself is to be expected, I'll change the question to "how fast" I will also do a test this afternoon, and report what my road speed is at 600rpm. Live and Learn, Thanks Mike
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Presently 2004 75 CDTi auto Connoisseur Tourer - White Gold 2001 75 2.5 auto Connoisseur Saloon - White Gold Previously 2002 75 1.8 auto Club SE, 2000 75 1.8 auto Classic SE (Company Car) 1997 420 (Company Car) 1996 216 cabriolet, 198? 213 VDP 1986 SD1 V8 VDP, 1968 2000TC, 1966 2000. |
17th March 2020, 13:54 | #8 |
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V6 2ltr auto in copperleaf +CDTI Auto in Royal Blue on loan to Son Join Date: Jul 2010
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It will depend on the slope of the road, ie, uphill or downhill.
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17th March 2020, 14:23 | #9 |
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OK, from post 7, I've used a level part our local car park, and recorded 5 mph, in drive, after travelling about 18 feet. (a fence with 6ft panels had conveniently been installed)
So, scientifically enough, with no throttle, 600rpm tickover, 5 mph. I still feel that this is too fast, but stand to be corrected, if I'm wrong. Regards Mike Last edited by BRG75; 17th March 2020 at 20:40.. |
17th March 2020, 14:58 | #10 |
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The boxes also have hill hold control - to stop you rolling backwards on a slope. I think it possibly adds a little more revs if needed. |
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