Hi guys, i would like to have some advice
im having a proton persona 2008 clocking @ 120k
recently having some trouble in the morning when i first starting my car, the transmission seems to have some delay when i switching from R to D, arnd 2-3 secs for the transmission to engage "D". I did msg some gearbox specialist about my problem but they quote me to overhaul my gearbox for rm2.5k. i wonder there is cheaper way to fix this problem.
any advice is appreciated, thanks.

This post has been edited by Irishcoffee: Jul 15 2019, 04:48 PM

when is the last time you change your transmission fluid?

i did my service on time, the transmission fluid still on going 10k remaining b4 it need to be change, i did check on the level, still fine, and the color still looks "pink"

Can try the atf treatment first.

u can try go to service center and asking them to check..
try ask then to "clucth adaptation" if im not mistaken
did your check engine indicator appear?

Try ATF treatment first. Look in shopee/lazada. JVAuto Lube and E3 oil gearbox treatment. No harm trying as cost less than RM100. It should be able to fix minor gearbox issue where the rubber seals are still not that bad condition yet. If doesn't work then only go for gearbox overhaul or change gearbox.

Did u changed gearbox filter as well?

2 things you can try.
ATF treatment and change the gearbox filter.

Treatment would be just pour and forget.

Filter gonna need to drop the gearbox to access the filter.

I don't think there is mechanical problems in worn out gears/bearings or piston clutches that may require replacements in a so called 'overhaul' .
However the delay problem could be caused by fluids (conditions, levels etc) or control valves (varnish) or solenoids.
Avoid the 'overhaul' expert but go to an 'expert' that only recommends fluid changes and/or conditioner FIRST, and go from there.

TS,happen during cold or during operating temperature also the same ?

it only happens during first start in the morning, or after it cool down. After first start, the problem doesnt occur again, there is no delay after i switch from R to D, until it cool down.

Did you only use SP 3 type of atf or you hantam any grade also masuk in your gearbox?

Irishcoffee

Drain your auto fluid, consider replacing the ATF filter but can be skipped if on budget as you require the filter + gasket + more fluids.

Use either one:
Lubegard Platinum
Or
k&W Trans X ATF Treatment (blue bottle)

Pour the additives first before New ATF, then top up ATF to cold Max level.

The the car to temperature going through the lower gears/D/N to stop, reverse, rinse repeat for 10 to 20+ minutes to temperature.

Check ATF level, top up to hot Max if needed.
If slight overfilled, let it be, however if overfilled a lot, please drain until at appropriate levels.

any problem with your car better let them see and test first. msg alone is not enough to justify the problem and the repair cost.

awesome, this sounds like a professional advice

yea, i sent to normal workshop before, not gearbox specialist, but they seems unable to pin down my problems

i see, gonna give a try on ATF

I'm no professional, only a fellow slosh box owner that's having your symptoms on a Sentra.

And also slipping clutch plates slosh box on the Iswara.

The 2 ATF additives are my go to solutions.

Hi Irishcoffee did the ATF additive work ?
Or did you have to rebuild your gearbox to solve?

Currently having similar problems as you mentioned 😅

This post has been edited by kdr93: Jul 5 2020, 10:01 AM

At least tag him la, abang

works like a charm, problem gone within a week.
replaced fresh ATF + addictive

That's great !
Can i know which specific additive you used ?

Glad that your auto trans is sorted out whilst saving (or not conned of) a ton of $ from an overhaul expert .

Why not refresh with new ATF fluids first without treatment additive (especially when the 'old' outgoing ATF looks nice ,pinkish and not dark coloured ) and see how it goes from there ?
If need be, refresh ATF fluids for another time or two , if further improvement is desired .

This post has been edited by zeng: Jul 6 2020, 01:13 PM

i used lubgard platinum

I was told that if the problem goes away after the engine/transmission gets warmed up, cleaning/flushing it would probably work.

Hi zeng, I have already replaced my ATF and the symptoms still persists.
If the additive cost the same as a ATF change, I might as well give it a try.

K&W ATF additive isn't too expensive and very widely available/imported.
give that a shot for high mileage vehicles

Can try adding addictive. Maybe will works temporary for 3k to 5k kms
If internal gearbox wear out, need to overhaul or recond unit.

If symptoms persists after new ATF replacement , then it certainly makes sense to use proper treatment additive in your case .
The point here is to (slowly, in my approach of no treatment) 'smoothen or unstuck' transmission control valve .
Appropriate treatment additive is more powerful cleaning stucked control valve IMO equivalent to steroids/anti-biotics .
In case you are not quite happy with the result after first fluid change/treatment additive , can always repeat the whole process again before you give up and surrender to overhauls/transmission exchange .