Old auto transmission, shifting into D
Old auto transmission, shifting into D
Author
Discussion

Ed/L152

Original Poster:

494 posts

261 months

Friday 14th December 2018
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Having never learnt much about traditional auto transmissions previously, I have a quick question about shifting into D or R: is it more sympathetic on the clutch bands to briefly hold the transmission on the foot-brake whilst shifting into D or R to prevent an immediate creep, or doesn't it matter?

I'm guessing it might not matter because as soon as the clutch bands bite it pulls the rpm of the turbine of the torque converter briefly down to zero, then immediately all the load is on the torque converter as the vehicle starts moving up to tick-over/creep speed.

Cheers!

mikes2w

49 posts

234 months

Friday 14th December 2018
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On mine, you must have your foot on the brake pedal to shift out of park to move to D or R

Mr Teddy Bear

186 posts

215 months

Wednesday 19th December 2018
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When the engine is cold and thus the engine revs are higher than normal you always want to have your foot on the brake, especially with rear disk hand brake!

Sardonicus

19,335 posts

245 months

Wednesday 19th December 2018
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You should always be on the brakes shifting to D or R from Neutral or Park and always make sure the car is stationary when swapping from forward to reverse i.e changing direction , and never ever shift into Park whilst the car is still moving nono in extreme cases the Park pawl can break out/exit the case/housing thus destroying your transmission eek

Edited by Sardonicus on Wednesday 19th December 22:58

henrycrun

2,473 posts

264 months

Wednesday 19th December 2018
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If this is a traffic lights question, no need to move D - P - D, just hold it stationary with the handbrake while waiting.

Sardonicus

19,335 posts

245 months

Thursday 20th December 2018
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henrycrun said:
If this is a traffic lights question, no need to move D - P - D, just hold it stationary with the handbrake while waiting.
Agree with this wink even if the junction is busy

anonymous-user

78 months

Thursday 20th December 2018
quotequote all
Sardonicus said:
henrycrun said:
If this is a traffic lights question, no need to move D - P - D, just hold it stationary with the handbrake while waiting.
Agree with this wink even if the junction is busy
Putting your car in P in traffic is a poor idea. If you get a rear end shunt, even a low speed one, and the transmission is in P then a minor incident can become a gearbox killing incident when the parking pawl get broken.

Sardonicus

19,335 posts

245 months

Thursday 20th December 2018
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dme123 said:
Sardonicus said:
henrycrun said:
If this is a traffic lights question, no need to move D - P - D, just hold it stationary with the handbrake while waiting.
Agree with this wink even if the junction is busy
Putting your car in P in traffic is a poor idea. If you get a rear end shunt, even a low speed one, and the transmission is in P then a minor incident can become a gearbox killing incident when the parking pawl get broken.
Precisely thumbup can you imagine explaining that to the insurance company? eek. laugh

NotBenny

3,920 posts

204 months

Thursday 20th December 2018
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dme123 said:
Sardonicus said:
henrycrun said:
If this is a traffic lights question, no need to move D - P - D, just hold it stationary with the handbrake while waiting.
Agree with this wink even if the junction is busy
Putting your car in P in traffic is a poor idea. If you get a rear end shunt, even a low speed one, and the transmission is in P then a minor incident can become a gearbox killing incident when the parking pawl get broken.
I’d never thought of that before! Will stop doing it!

DJP

1,199 posts

203 months

Thursday 20th December 2018
quotequote all
henrycrun said:
If this is a traffic lights question, no need to move D - P - D, just hold it stationary with the handbrake while waiting.
That. All day, every day.

Ed/L152

Original Poster:

494 posts

261 months

Friday 21st December 2018
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Agree with that. The power put into the torque converter whilst stationary at tickover is nothing compared to the power put through it when accelerating.

The main thrust of my question what how vulnerable the clutch bands are to mild abuse.

ninjag

1,878 posts

143 months

Saturday 22nd December 2018
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I shift to N (not P) and pull the handbrake if sitting at lights for a while. I just find I can relax better rather than sitting on the brakes, besides I don't want to light up the person behind me as I don't like it being done to me, especially with some of these insanely bright brake clusters you get on (German) cars.