G/box: Auto AW33/55: - Creepy ?

Bob 1967 · Jul 25th, 2020, 19:56

Is it normal to have the car creep (have to hold it on the brake) when R or D is engaged ? BW 55.
Had a W124 200TE (sadly missed) auto and it would hold even on an incline (up or down) in D until the accelerator was depressed.

rustytoba · Jul 25th, 2020, 20:53

Hi,

In general all automatics should have a bit of creep, normally the bigger the engine (more torque) the more noticeable the effect of creep.

Semi-automatics such as my much missed 1995 Fiat Panda Selecta had a CVT unit that would only engage when the accelerator was pressed so no creep at all.

But all my Volvo's have creeped it is a fairly fundamental attribute to the automatic transmission, the engine spins, the torque converter multiplies the output from the engine causing the vehicle to move.

Normally an automatic that didn't creep would have either too low an idle speed or perhaps a leaky seal in the torque converter but you would have noticed a loss of performance with that as well.

Scott

Othen · Jul 25th, 2020, 22:38

As above. The BW55 in the Royal Barge (my 1980 244) creeps a bit in D or R, they all do. If you have a carburettor engine you may also notice the engines drop a little when you put it into gear.

Jul 25th, 2020, 19:56	#1
Bob 1967 Master Member Last Online: Yesterday 18:27 Join Date: Aug 2017 Location: Dublin View Photos By: Bob 1967	Creepy ? Is it normal to have the car creep (have to hold it on the brake) when R or D is engaged ? BW 55. Had a W124 200TE (sadly missed) auto and it would hold even on an incline (up or down) in D until the accelerator was depressed.

Jul 25th, 2020, 20:53	#2
rustytoba Master Member Last Online: Nov 24th, 2023 01:11 Join Date: Dec 2009 Location: Glasgow	Hi, In general all automatics should have a bit of creep, normally the bigger the engine (more torque) the more noticeable the effect of creep. Semi-automatics such as my much missed 1995 Fiat Panda Selecta had a CVT unit that would only engage when the accelerator was pressed so no creep at all. But all my Volvo's have creeped it is a fairly fundamental attribute to the automatic transmission, the engine spins, the torque converter multiplies the output from the engine causing the vehicle to move. Normally an automatic that didn't creep would have either too low an idle speed or perhaps a leaky seal in the torque converter but you would have noticed a loss of performance with that as well. Scott

Jul 25th, 2020, 22:38	#3
Othen Premier Member Last Online: Today 09:49 Join Date: Jan 2020 Location: Corby del Sol	As above. The BW55 in the Royal Barge (my 1980 244) creeps a bit in D or R, they all do. If you have a carburettor engine you may also notice the engines drop a little when you put it into gear.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)