Dozieson:



Oh my God. They have contaminated your gear box. Dirt has entered through the CV joint. You have to stop driving that car like that and look for a specialist. They may need to clean the valve body and flush the entire transmission and replace with original Toyota WS

inikamoze:
Dear Car Doctor,

My kid brother's Camry 2005 has gear issues, it does not go into reverse. Other gear positions works nicely.
Its a 4plug and its a 13pin. The engine was ringed months ago when it 'knocked'. This is a car we bought fresh Tokunboh from a dealer in June last year oooo.
Please what can be done about the gear not going into reverse?

Mecoy:
I am having a suspected transmission issue with my 2007 Lexus ES 350 and I'm in need of a reliable gear expert in Abeokuta.

This is a summary of the problem:
1. I had an accident in April with the car where in order to avoid a careless driver, I swerved hard, lost control and hit the driver's tyre/side on the median kerbs on Lagos Ibadan expressway. Brake disc broke and shaft pulled out. It was replaced immediately by the nearest mechanic to the accident scene. Further repairs were done gradually.

2. In June/July, I had a mechanic check the car in Ilorin to fix all the noise on the front tires. He changed linkages, ball joints and greased the shaft cup which was low on grease.

3. After he fixed it, I traveled the next day, but the car had a lot of unusual vibrations, especially one gentle and repeated vibrations that comes once in a while. Vibration is usually noticed between 40 and 100Km/hr. Mechanics tried to trace the vibrations but couldn't get it. In the process of tracing the vibrations, the shaft was suspected and it was cleaned twice. Once it was 'packed' with rubber and my mechanic in Ilorin faulted the rubber packing and removed it and cleaned thoroughly.

4. In September, I noticed something unusual in the transmission, there was always a delay when switching from gear 2 to gear 3. It wasn't frequent and most times, mechanics didn't notice it during test drive. During inspection, it was noticed that the gearoil sump had hit something and was deformed. Mechanic asked me to drop the car to allow it cool before working on the sump to beat it back to shape. He did this and changed the oil. Please note that I have always used original Toyota WS gear oil for this car, never compromised. He topped with 4 litres oil which he claimed was sufficient.

5. I got back to Ilorin and realized that the problem wasn't solved, there was still a delay switching from gear 2 to 3. I had it scanned by someone who noticed an error, I checked it online, it was something about solenoid which affects the switch from gear 2 to 3, but the guy cleared the error without saving them.
I took it to another gear specialist in Ilorin, he had it scanned but the scan turned out to be okay. Nothing was wrong with the gear and engine. He only advised me to top the gear oil with 2 litres which I did before traveling back to Abeokuta.

6. I traveled back to Abeokuta and the problem was still there, at some point when I was almost in Abeokuta, the car had difficulty moving and was vibrating, I parked, turned off the engine, turned it back on after a few seconds and everything was fine, I continued my journey, but with the transmission delays. The car is currently in Abeokuta, working, but with the transmission delay.
I don't want to travel with it anymore and I don't want to have any trial and error done by just any mechanic. I need trusted hands to check it here in Abeokuta. I don't want to risk driving it down to Lagos.

Please I need a trusted hand that can work on the car and save me from a transmission replacement.

cardoctor:
Automatic gearbox issues have become a reoccuring decimal to any automatic car owner. Slow take off, sluggish acceleration, lack of kick down, loss of drive while in motion, lack of gear change, aggressive gear changes, high engine revs without power in drive just to name a few.

From my observation and the complaints made by some of our customers, these problems usually start from a gearbox oil change that was recommended by the mechanic who then uses the wrong type of ATF oil for the transmission.

Most car manufacturers develop their own ATF formular for their cars.

Honda recommends their own formular ATF-z1 for their gearboxes manufactured between 1998 to 2009 and upgraded to the ATF-Dw1 for gearboxes manufactured from 2010 upwards.

Toyota uses the Type 4 ATF for their cars manufactured between1996 to 2007 and the Toyota WS ATF for ones manufactured between 2007 to present.

Most other car manufactures have also upgraded the type of ATF for their modern cars.

Using the wrong grade of ATF would almost certainly result in a failing transmission. Low grade ATF may not be able to handle the high temperature operations operations of a gearbox. Under very high temperatures, low grade oil loses its fluidity and may begin to boil causing loss of hydraulic functions by frothing or foaming.

Some remedies I have seen used by local mechanics is to further add engine oil to the gearbox in order to thicken the viscosity of the ATF. This in turn puts the pump under great stress as the thicker oil would require more effort from the pump in distributing the oil under high pressure as well as the oil filter which is usually embedded within the transmission gear train. (The removal and changing of all Honda transmission oil filter would require the removal of the gear box from the car and stripping down the gearbox)

The resulting consequence would be an imminent and extreme overheating of the transmission and components such as the friction plates and a rapid degradation of the wet clutch fibres hence the loss of drive, slipping clutch and rough gear changes.

Replacing the gearbox or a total overhaul by an expert would be the likely solution but before then, an inexperienced mechanic would Send you on a wild goose chase by suggesting the removal and servicing or outright replacement of shift solenoids on the outer casing of the gearbox. These solutions Don't last as its just a temporal remedy to a terminal issue.

We constantly repair these gearboxes and those of other makes to a very high standard with 99.9% success rate and we recommend that if you are having serious issues with your automatic gearbox, ensure that the appropriate procedures are followed.




Car-Doctor.

galaxi:
Thank you for your reply,
I have done necessary diagnosis and yet no error. Code.
The car does not have any check engine code.
The transmission does not have any issue at all.

I’m in Aba,Abia state,can you recommend anyone that handle this situation?
I am automatic transmission Engr, the issue is electrical wiring related, the oil temp sensors are either faulty or not receiving the needed signal voltage from transmission brain box. Call me on this xup no for solutions:08059652028

Orkeven:
Good evening.
Please, I have problem with my car, an automatic Toyota Corolla 2006 (so-called bank's car). It appears to be a transmission issue. The engine starts without any problem but when I put it into drive, it doesn't move even though reverse works fine. D, 2 and L don't work but R works.

Cotonou12:
I drive Avalon dashboard 2013

I don’t know how to explain it but let me explain as a novice .

When it’s on gear 1 it will drag before it enters gear 2

Also, when I’m speeding , sometimes it will just accelerate but it’s not moving ( it seems as if all the selections went to neutral )

Sometimes when I try forcing it to change gear , the speedometer will get to 3/4 before it changes and then makes a sound “kpum”

The one that shocked me was last night , it was on gear one ohhh till I got home .

I’m in Enugu . Please if you know any good mech I can take this car to, kindly help

Na my wife car. And she no even tell me until when I drove the car myself and started noticing all these things


Another one is that if I put the car on “D” it will jerk/jump

iyisco2001:


1. T4.
2. Dont, it is possible but dont.
3. Gear Slippage soon/eratic shifting.

chike4all033:
The original T4 is expensive is there any other gearoil one can use for a Toyota sienna 2005 model?

enigmatique:
Hello. Thank you for your fantastic work here.

I own a Honda EOD and changed its gearbox some time in February. Some time in May, I made the mistake of trying to travel with it without checking its gear oil level. The car gave me issues during the trip, but after I added about 2 liters of transmission oil, it started working properly I had to turn back to Lagos that night due to traffic though. When I returned to Lagos I went to service the car and used Holts Transmission oil to replace the old one (which had developed a smell during that failed trip).

Now recently I have noticed that the gear doesn't always click into reverse on my first try. Some times it clicks in one try but a lot of times I'll have to take it to another gear and bring it back to R before it clicks. What's the problem? Is it a gear switch somewhere or something else?

Dozieson:


You have used a wrong oil

enigmatique:

I see. Any examples of the right oil(s)?

Dozieson:


Honda DW-1

Dozieson:


You have used a wrong oil

nymphomaniac:


Bro, Camry 03 10pin

Gears 1-3 enter well though occasionally jerk slightly. 4 doesn’t enter. Cars revs higher instead of entering 4. I haven’t scanned yet. Please what could be wrong.

chike4all033:
The original T4 is expensive is there any other gearoil one can use for a Toyota sienna 2005 model?

SpaceAngel:
Reverse gear of 2012 AWD highlander failed, no error codes using toyota techstream diagnostics, oil level is ok. Started without warning, car was sluggish in reverse, then stopped moving at all in reverse gear. The gearbox was changed some months back.

What could be the issue

nymphomaniac:


Bro, Camry 03 10pin

Gears 1-3 enter well though occasionally jerk slightly. 4 doesn’t enter. Cars revs higher instead of entering 4. I haven’t scanned yet. Please what could be wrong.

Kashif:


Does it rev freely in 4 or doesn't get in at all? With a good scanner, see if 4th is commanded at all. If the computer is not commanding 4th, the issue is not in the box. If it is (which is unlikely) the issue is in the box.

nymphomaniac:
thank you. I’ll scan this weekend. It doesn’t enter 4 at all. It just keeps revving past 2k Into 3k and 3.5k