VT Auto Transmission service, now slipping and not changing

[dirty hands]

mattw1992
tranny computer resets its self when battery is disconnected .. not like remapping or anything to do with EFI setups

Didnt know tranny faults made an engine check light come on with the commy

mmm bubbles are you on level ground -motor running in park - cycle the gears- tranny oil warm ?

the filter just pushes in on a seal .. no bolts holding it

auto wasn't slipping before -- dexron lll the right oil

to forum ...................{ immortality asked Is this linked to a particular workshop? >> Answer not to any major aussie national group .. cant mention names anyway }

These exact same auto problems after servicing are happening to other model cars in other aussie forums

coming out worse than when going in ...what are the people really doing ......they sure charge eneough for the basic servicing of an auto ?

 

[Immortality]

to forum
These exact same auto problems after servicing are happening to other model cars in other aussie forums

coming out worse than when going in ...

what are the people really doing ......they sure charge eneough for the basic servicing of an auto ?

Is this linked to a particular workshop?

Could be stuffing the seal when replacing filter?

Could be pumping out the trans fluid with the engine running and maybe letting it run dry?

Over filling or inferior fluid used?

Could be many things....

 

[Kuksta]

Im not a mechanic but if you get them to look at the gear changing sensor thing that may be your problem. I had this same problem with my auto VT wagon. It turned out to have nothing to do with the transmission which I had thoroughly looked over by a transmission specialist in my local and he reckoned it could be lots of things and pretty much couldn't be arsed doing it. So I went to a mechanic I heard was good and he knew straight away what the problem was, so maybe get them to have a look at that for ya mate, might help?

 

[mattw1992]

Hello All,

Just an update. Had the mechanic take another look at it. They have told me that the transmission fluid being high will not affect it in any way. (my face when he told me that was like, are you serious, do you know anything about cars) He also said he didn't know why there were bubbles, but he spoke to a transmission specialist and feels that the TPS and Gear Solenoids need to be replaced, and he feels that i should just get a new/reco transmission.

As you can image i told him to shove it and that he now has to re-drain and put the transmission fluid in at the correct level. He is then going to take it to a tranny specialist to be checked, which is fine he can do that.

I will be keeping statements from the mechanic and also getting the tranny specialist to put there report on signed letterhead, so that, if need be, i can take him to the NSW Fair Trading NCAT tribunal where they can fight over why they put in the incorrect amount and how they can justify a car to need a new transmission after being serviced.

 

[Immortality]

Is said mechanic trying to arrange this new/reco tranny for you?

If it's over filled it can lead to the trans fluid becoming aerated and as we all know air is very compressible which will cause some of the issues you are experiencing.

 

[gm1961]

Hi All

hmm, do people road test cars after serving autos these days ??? my guy does ( and after brakes and even engine oil change )

I cant talk about the T700 as i have never had a problem with any of the 2 cars we have at home, (ok only problem was years ago with a high mileage @ 480k on the clock and it lost gears over 2 days first lost 4th then 3rd , they auto was worn 3 and 4 does all the work on gentle driven cars )

Prior to that, i had a ford with a C4 , that was way overfilled and it hung on to gears badly , i just undone the hose to radiator fitting and placed a container under it and collected about 1/2 litre fluid, switched of , tighten the fitting and rechecked the levels, drove fine after that.

Another car before that, cant remember what it was had a leak out the rear seal, about 6 or 21 months later it was driving like the handbrake was on, checked fluid was very low only the odd drop or so on the dipstic, topped up and fine, lasted a few more years with another top up.

Only issue re tuning is older trimatics, the vacumn tube of the carby for the kickdown gets clogged up with gunk, i forget that it does , hang on to gears or changes way to early, its one of the 2 , but solved it, took the tube of and cleaned it out was full or sooty / crud , my auto bloke had a fancy tool like a old school fountain pen but had some small drill bits - especially for this job

Talking trimatics, had a car on club rego and yeah if it did not used it for a fw months, the rear governor would be stuck or dry or something, it would hold first and bang into second for the first 3 or 4 stop starts int he first 5 mins untill it wormed up , a mate of mine has the same problem with his T350 in a camaro, first take off and first few stops are harsh , aftet that the both cars drive silky smooth ( well as good as a trimatic can get )

Did you watch the service, be very cautious if they touched any thing under the bonnet, some guys ( shonks ) will change slightly your cable kick down, the T700 is very sensitive about this

I like getting involved and like watching, i always liek to be there and like to look at the fluid coming out , is it red , it is dirty , is it brownish, any water ?? dont laugh smell the fluid does it smell like burnt sawdust , put some on your finger is it gritty.
Also when they drain the pan, have them look at the last amount of fluid is there any particles in it wither shiny metal or small black chips , is there any thing stuck to those small magnets in the pan ( it does have the magnets in it for a reason !! )

hmm, yeah other than full reco , after a transmission service there is the solenoid changes / repair, they can play up and fail.

regards
george

 

[Immortality]

George,

I hope you have a great typing speed

 

[dirty hands]

goerge ... its the forums fault:computer:

I am very happy to talk anyone through ...how to service your own automatic on the VT 6 cyl 4L60-E

 

[mattw1992]

Just wondering. Now after today and them stuffing around it won't go into second gear automatically. Is available by manual. Could this be a solenoid issue? I have no error codes coming up!

 

[dirty hands]

these guys are guessing and no intention of rebuilding

but the solenoids are there @ 5:20

https://www.youtube.com/watch?v=VsHkDzFVkbc

will wait and see what the report comes back as

most possible is the shift solenoid or the acumulator

this is better rebuild

https://www.youtube.com/watch?v=JpmJtuVrdWk