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richjp
Joined: 22 Jan 2018 Posts: 85 Location: Walthamstow
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Posted: Mon Nov 09, 2020 20:09 Post subject: Automatic transmission ‘slip’ |
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When giving my 3.0L V6 a fair bit of throttle and cold I’ve noticed that occasionally it ‘slips’ going from second to third. By slip I mean overevs before dropping down. AT fluid all new and looks good. Is this just because still cold or a sign of something more serious with the gearbox? _________________ I'm a Delica newbie - please bear with me ;) |
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Posted: Mon Nov 09, 2020 20:09 Post subject: Google Ads keep this community free to join! |
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Deker
Joined: 08 Mar 2008 Posts: 3833 Location: Borehamwood
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Posted: Tue Nov 10, 2020 19:34 Post subject: |
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Probably needs a "Band" adjusting.
Ahh, what did I say - Auto gearboxes have Bands & some also have clutches.
The bands lock gears sequentially, when a band gets slack, it takes a fraction longer to "Lock up" the previous gear.
Therefore one may notice the "Slip" when the gears change.
Then there is the Torque Converter, many have a "Lock" -
Should the lock not function correctly, may also give the impression of "Slip"
To my knowledge, the TC Lock only engages when in "Top Gear"
Please note: I am not an Auto Gearbox expert. What I write is just a brief explanation.
Mr D |
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andyman
Joined: 08 Dec 2012 Posts: 5602 Location: Penrith
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Posted: Wed Nov 11, 2020 20:34 Post subject: |
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To make your gear clutches/brake bands last a bit longer, once it is up to a good speed fo changing up, ease off the throttle slightly, and the gearbox will change up with less power going through as the clutches/bands do their thing. once fully engaged in the next gear, THEN re-apply the accelerator. Otherwise, like doing racing changes on a manual, where you don't ease off the accelerator as you dip the clutch and change up, you can expect increased wear. _________________ Andy C L300 Super Exceed - over 100 smiles per gallon! |
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richjp
Joined: 22 Jan 2018 Posts: 85 Location: Walthamstow
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Posted: Wed Nov 11, 2020 20:52 Post subject: |
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Thanks a lot for the advice - I have been more careful on the throttle particularly when cold since I noticed the 'slip' and this has helped a lot. If I notice it getting much worse I'll try and get a gearbox service to adjust the clutches/bands. _________________ I'm a Delica newbie - please bear with me ;) |
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