Nissan Sentra N16 on cold start car not moving when engage to "D"

[Cuppy]

Dear gurus, sifus, seniors,

This situation recently took place whereby during the cold start when i engage it to D, the car seems not moving at all. Thus i have to shift it to 1, then the car start to move, then slowly to 2 and D. Say if the engine is warm, this situation will not take place.

Consulted Tan Chong guys, he says it might be the GB problem. But i still believe there might be someway else to fix this problem. Therefore seeking some form assistance from zth'ians so that this thing can be resolved. Thanks in advance people :)

 

[DanzEterna]

try flushing the gearbox....when was the last time u changed your ATF?

 

[Cuppy]

Last ATF changing was on the last service which is roughly 5k km before. Tho, the mechanic says can change atf every 40k interval but i insist him on to do it every 20k mileage.

 

[Supra_Fanatics]

20K Mileage to change ATF is the most recommended time to change...
40K too much la..

 

[DanzEterna]

just try flushing 1st....c how it goes..otherwise u might need to service the valve body

 

[Cuppy]

yes bro DanzEterna, thanks for the suggestion. Will do it. Do you have any idea using ATF external cooler? Had the thought of installing it as well. Any feedback on this?

 

[Izso]

Cuppy : Question-

1. When you put it in "D", do you give it a little gas or you just want it to move by itself when in D?

2. What gearbox oil are you using? Some smartass mechs say "Can one la.. this one better" and use another type of oil when the manufacturers manual specifically requests for another type of oil.

There's an article on ATF coolers on the main page that I posted up talking about ATF coolers. Have a read :

http://www.zerotohundred.com/newforums/automotive-news/383202-transmission-coolers.html

 

[Cuppy]

To answer the question bro Izso,

1) As we all know usually when you engage into D, it will move by itself. But in this situation it seems like no respond at all. The feel of D is the same feel of engaging to N. No respond. Thus, i have to wait till the engine gets warmer abit say like 5mins then can engage to D. If i want to start and go, then i have to engage it to 1, then slowly to 2, then to D. This is what i am doing currently.

2) The oil that im using which is available in the mechanic shop is called SuperNova or something like that. Besides he also has Toyota ATF which is claimed to be a better ones. Talking about good ATF oils i have not much idea though, lol

Thanks for the link will go through it shortly. :)

 

[DanzEterna]

toyota atf also works wonders on the famous pv6 gearbox....but beware, there are fakes out there....

 

[Izso]

Danz and Cuppy : omg.. you two need to understand that different ATF works differently!

Toyota Type-IV is not compatible with Dexron III
SPIII is not compatible with Dexron III
Dexron III is not compatible with Mercon IV
CVT Gear oil is not compatible with other types of ATF

This very reason is why Honda stopped offering their CVT gearbox in their City models. Owners kept complaining about how unreliable the gearbox was and all that crap when 99% of the time they weren't using authorized or proper CVT oil in the first place! My fathers old Perdana had a bad GB after 4 years of using the wrong oil because the "mech said it was better".

These oils all have different viscosities and heat tolerances. The gears in the trannys were designed with these tolerances in mind and if you introduce something else, they will die a slow and painful death.

If the manufacturer demands Dexron III then the best you can do is use fully synthetic Dexron III. Mineral / semi and fully syn ATF all make a huge difference in terms of performance.

 

[Cuppy]

yes absolutely, thanks for the informative post izso. Like i said earlier, i have not much knowledge on ATF's. So in my situation, do you have any recommendation on which brand or type ATF should i use?

 

[Izso]

based on a quick Google search, the N16 seems to be using Dexron III. Can you confirm this through your car user manual? Or sometimes it's printed on a sticker under the engine hood / engine bay or on the door side sill?

If yes then consider fully synthetic oils like Motul, Redline - Dexron III of course. Otherwise the Daihatsu or Nissan Dexron III is perfectly good enough.

Incidentally, the ATF is cold when starting on a cold start. The oil might be too thick to circulate properly in the morning so hence the lack of response from your heavy car. My Wira is the same thing so I have to give it some gas for it to move.

 

[Cuppy]

yes brother, taken note and will work the necessary things to solve my situation. thx alot by the way. Much appreciated :)

 

[MKMD428]

have you diagnosed your car? it might be TCU or any sensors.

 

[Cuppy]

Nope, haven't yet. Was away for work couple of days. Anyways, 1 year ago, i have changed the GB revolution sensor which cost about 600++ in TCM. The problem before was the gear doesn't shift at all as in stays at gear 1. Thus sensor replacement have been made. For now, i might try on flushing it like what brother danzeterna suggestion. Perhaps, lets see how things goes after that :)