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[evvo1]

Is this normal? ...I'm cruising along in third or fourth; I come to a hill so I increase the throttle a little; and as expected, the car shifts down a gear ...but (and this is the point): in the course of changing down, just for a second the revs go up to (typically) 3000, then immediately settle to about 2500 and stabilise. It only lasts about a second. Could this be the start of a slipping clutch, or is it the way they are supposed to behave? Apart from this I have no issues with gear changes. Torque seems OK up motorway inclines with no unexpected slips in top gear.
Thanks in advance for any wisdom.

[belldarr]

Can only tell you that mine doesn't do that - revs never increase during changing - the needle just drops down as the box goes up the gears.

Maybe try a fluid and filters change to see if that improves things....

 

[evvo1]

Is this normal? ...I'm cruising along in third or fourth; I come to a hill so I increase the throttle a little; and as expected, the car shifts down a gear ...but (and this is the point): in the course of changing down, just for a second the revs go up to (typically) 3000, then immediately settle to about 2500 and stabilise. It only lasts about a second. Could this be the start of a slipping clutch, or is it the way they are supposed to behave? Apart from this I have no issues with gear changes. Torque seems OK up motorway inclines with no unexpected slips in top gear.
Thanks in advance for any wisdom.

Cheers Belldarr. Yea maybe it's due for a change of oil and filter. Never checked it yet. I'm due to see Loo Knee and Pete in the near future so maybe if one of them has the time, I could get em to drive it for me and see what they think. They good guys! They changed my cam covers and cleaned the breather and also Sorted another, finnicky oil leak for me recently.

[deecee]

sounds very much like g/box oil ,dextron 3 only their is a page on how 2 on here,top up as outlined ,had 2 do mine a couple of times milage was 100,just over hope it helps deecee

[evvo1]

Can only tell you that mine doesn't do that - revs never increase during changing - the needle just drops down as the box goes up the gears.

Maybe try a fluid and filters change to see if that improves things....

 

Just re-read this and maybe I should clarify: My needle just drops down as the box goes up the gears as well. That seems OK; it's only when the box is changing down (e.g. when going up hills) that this phenomenon occurs. Instead of going straight from (say 1900 revs to (say) 2500 revs, it momentarily goes up to 3000 then settles (in the lower gear) at about 2500-2600. No other probs. Actually, I think you are right in that I should check the gear box oil and maybe do a change anyway. I've read on here that many of the commonest minor autobox problems are just down to the oil. Thanks again anyway. Cheers