Transmission Slip'age

[Morton]

Hmmmm... It's only started developing in the last two weeks, but here's the rundown:

1) Transmission slips between gears.
2) Takes roughly one full second to find the gear
3) Slips equally on all gears (1-2, 2-3, 3-4)
4) Slips equally at all throttle levels (grannying or flogging)
5) Appears to have gotten a little worse this week

Any thoughts?

My thinking is that equal slip'age on all gears eliminates any specific clutch pack.

Kickdown issue?
Torque converter issue?

Facts:

1) Trans fluid is exactly on level
2) Trans fluid contains no specs or crap
3) Trans fluid is a nice fresh colour
4) Kickdown cable isn't too lose or too tight
5) Throttle cable is rather lose, but can't be tightened any further

Cheers for any informed input, for I know very little about transmissions, and don't want to take it to a trans shop who just wants to push a full expensive rebuild.

[Bz Kn33z]

Hey mate, I have the same problem in my Vn V6 Auto through all the gears it slips only for a second and when its full throttle going into 2nd from 1st it still takes the same time to change gears, it helped putting the kickdown cable up higher not heaps so it holds 1st long but then it wouldnt let the T/B open fully it open85% insted, people have told me its on its way out and doesnt sound like the torgue convertor but yeah it might be good luck with it if u find the problem pm me lol

[jas98]

Hmmmm... It's only started developing in the last two weeks, but here's the rundown:

1) Transmission slips between gears.
2) Takes roughly one full second to find the gear
3) Slips equally on all gears (1-2, 2-3, 3-4)
4) Slips equally at all throttle levels (grannying or flogging)
5) Appears to have gotten a little worse this week

Any thoughts?

My thinking is that equal slip'age on all gears eliminates any specific clutch pack.

Kickdown issue?
Torque converter issue?

Facts:

1) Trans fluid is exactly on level
2) Trans fluid contains no specs or crap
3) Trans fluid is a nice fresh colour
4) Kickdown cable isn't too lose or too tight
5) Throttle cable is rather lose, but can't be tightened any further

Cheers for any informed input, for I know very little about transmissions, and don't want to take it to a trans shop who just wants to push a full expensive rebuild.

ok first thing first....why cant the throttle cable be tightened and more? there should be plenty of adjustment there unless the cable has stretched beyond limit. secondly it does sound like a kickdwn issue as i had the same problem with mine....would hold gears for ages then i adjusted the kick down and it ran like a new car and if all fails then i have to say something inside the gearbox sounds like teh problem

also the correct procedure for adjusting teh kickdown is to have teh throttle cable adjusted correctly first otherwise the kickdown may not be adjusted properly

good luck

[PaRaDoX]

morton my 5L auto did it when i got it....

change the filter and dump the oil + fit a corvette servo STAT... or you'll kill it...

i did this and fixed it right up! never had a issue with it! is it like this?

http://www.youtube.com/watch?v=avwPTu83DsA

then it went to this :P slippage!!! (of the tyres not trans!!)
YouTube - 0-60 Run - lack of traction

[Morton]

Ahhh thakns Paradox, that's what I was hoping to hear Greenfoam also suggested to me that a corvette servo may fix the issue. Hopefully she'll see out the next two weeks 'till I can get the work done!

[kniever]

on my old car i had the same issue with the throttle cable, it was tightened as far as the thread would go but was still slack so where the cable hooks onto the throttle body on the curvy black dooby at the top (dont know what its called lol) i just wedged a small bolt between the cable and the curvy black dooby to take the slack then adjusted the cable again to get it right and i never had a problem with it.

also corvette servo ftw

[Morton]

haha, I just undid the cable and put a nice knot in it this morning. That sorted it out

But yeah, I need to get that trans sorted out. Any other ideas guys?

[PaRaDoX]

morton if its anything like my video then you have your fix... :P

[Morton]

morton if its anything like my video then you have your fix... :P

Your video's private you prick, I can't view it

[Bz Kn33z]

i dont think putting a knot in mine will help? why not tighted the cable more? or is it already as high as it will go?

[Morton]

Yeah, I'm not too sure about your problem. I know on mine, the throttle cable was stretched to the point where you couldn't physically tighten it any more using the plastic screw, so I just threw a knot in there, and it was worth about half the spindle length in extra tightness

My kickdown appears to be fine. Let's hope when I can afford to throw a shiftkit + corvette servo in there, that fixes her up

[Bz Kn33z]

Damn it, some1 come over and help me put my manual in already lol

[Morton]

Aw man, I wish I could afford to throw a T5 in the VQ. That would be the day :P

[kniever]

My kickdown appears to be fine. Let's hope when I can afford to throw a shiftkit + corvette servo in there, that fixes her up

you dont need to put a shift kit in, just put a $60 corvette servo in and it makes a huge differance, thats all you need and will probably fix your problem, if not atleast you already got the servo.

[vnv8driver]

morton, im telling you right now its either a mis-aligned kickdown (you may think its adjusted properly) or its the band lining/clutch packs.. by yiour description sounds like giving the kickdown another tweak may fix it, usually a box wont slip if your grannying it, define grannying????

if your box is unrebuilt its probably sue for one as the v8 kills autos thatare driven by hoons, like i said earlier last month...youll learn!

[Morton]

you dont need to put a shift kit in, just put a $60 corvette servo in and it makes a huge differance, thats all you need and will probably fix your problem, if not atleast you already got the servo.

I know I don't 'NEED' a shift-kit. But I do rather fancy having one installed while the sump is off

morton, im telling you right now its either a mis-aligned kickdown (you may think its adjusted properly) or its the band lining/clutch packs.. by yiour description sounds like giving the kickdown another tweak may fix it, usually a box wont slip if your grannying it, define grannying????

if your box is unrebuilt its probably sue for one as the v8 kills autos thatare driven by hoons, like i said earlier last month...youll learn!

grannying = driving as if stuck in london traffic.

define "unrebuilt" O_o I'm not sure what has caused the transmission to start giving way. If you think I drive it around like a hoon, you have a lot to learn! I reset the trip meter every tank of fuel, and I never let the consumption average climb above 13.0 - that should give you an idea of how I drive it

[vnv8driver]

im averaging 13.6 at the moment and had to spray my rear guards from all the rubber over the past week...

A shift kit on a worn tranmission will destroy it twice as quick, if theres issues then leave it alone. the 1 second delay on second thoughts could just be the way the stock box behaves, when you go flat chat from first to second does it take longer or decrease in revs slowly while changing gears?

[vnv8driver]

and you cant say you dont drive like a hoon, 0-100 runs and a cai to make it go faster! you might not do it all the time, but on a motor/box that has a weak point, then gets the crap cained out of it, even just one or 2 squirts, can cause the weak point to collapse and show itself... same as the when you out a car on a dyno, if theres a weak point in the trans/motor and you go full bull, expect some problems.

[89 vn]

Odd it slips in every gear and has just started doin it, my vn used to occasionally slip back from 4th to 3rd gear but eventually i just got ****ed off and drove it around without overdrive unless I needed 4th gear, all I could suggest is to take it to a gearbox place but dont listen to them if they suggest a somethin drastic like a rebuild unless alot say so..

oh my gf's VS when she bought it the tranny wasnt changing to 4th properly and the trans was just not great in general, she took it to this bloke we know and he fixed 'a seal' inside the box and its been sweet as since (5+months) and he charged nothing for it, i know yours isnt a VS but do they use the same gearbox ? the t700? maybe you could check that out too

[centy]

Yeah it may be worth doing a full oil change and filter with the servo INCASE the oil has failed or the filter is full of crud.
I changed the filter on a old vp a couple years ago and was amazed how much junk had collected in the tranny sump while the oil still looked good.
Many years ago i was told that if a box gets to hot the seals can harden and do what you r describing but i have seen a vn run the box temp up enough to over heat the motor and burn the oil with out damage. It did fail months later due to the driver being a dick and dragging at EVERY light.

So full oil change and servo with another kick down adjustment is the way to go.