mayor2013:
This is a straight forward job. Go back to the mechanic that worked on your car am sure while he was fixing d shaft he probably forgot to connect back the vechicle speed sensor which is located on the gear box close to the drive shaft that was worked upon. Tell him to check it properly

Boy2boy:

it has been properly checked to be connected. The sensors (vss, abs) were tested and they're ok.

Boy2boy:
Hello experts in the house. A friend needs help with vehicle and I'll appreciate your contribution to this thread.

Toyota Sienna LE, 2007. Auto transmission, FWD.
It started with drive shaft problem and it was changed. When it was parked after test driving by the mechanic, it could not move move forward again but reverse gear engaged and moved perfectly. Every auto transmission consulted here (Ibadan) keep saying it was because the shaft was removed while the oil was hot. They said it is common fault of "13-pin valve body" toyota sienna but I find it difficult to believe. P0500 generated it was erased and p0793 later generated. Please, I need enlightment on this. Thanks

EduardoForesti:
I wanted to see what the final diagnosis and fix was on this situation?

I have a 2005 Sienna, AWD, and completely out of the blue, Reverse works perfectly, but NO forward gears work!

Fluid level okay. Tested Cold and Warm. Shifter cable is connected at dash (shifter) and at transmission. There is no MIL/CIL. Hooked up to OBDII and it hasn't thrown any codes.

170K Miles. Original owner. Never towed trailers.

This is the only post I've seen where Reverse works, but other gears don't....

Thanks.

Folavincent:
Abeg o!
I needed help, my far right plug is not working. I tot it's plug issue, then the mechanic change the coil to confirm. None work. Other three are working and bringing light.

I'm giving the option of changing my ECU or brain buss. We use machine, no error was detected.

I need Help.
My car is Nissan Tiida 2007.
Thanks

Kidah77:
Pls I am also experiencing issues with my 2005 toyota sienna transmission. when in motion gear selest from 2 to 4 rapidly and disengages on its own then re-engage by itself after 30seconds. What may be the problem?

Blackbishop:


The likely cause is a damaged Cylinder head

Billiebaba:

I would like a logical explanation to your thoughts. He said the plug on that cylinder is not working, I'm bending towards the circuit of that coil on that cylinder, power, ground and signal to that coil.

Kidah77:
Pls I am also experiencing issues with my 2005 toyota sienna transmission. when in motion gear selest from 2 to 4 rapidly and disengages on its own then re-engage by itself after 30seconds. What may be the problem?

Kidah77:
Pls I am also experiencing issues with my 2005 toyota sienna transmission. when in motion gear selest from 2 to 4 rapidly and disengages on its own then re-engage by itself after 30seconds. What may be the problem?

chiscoboi:
Sienna 05 gearbox stops at gear two and mph don't work

gat2so:
Speed sensor is faulty or improper connection

chiscoboi:
Good day, I have an issue with my sienna 05 once the gearbox is cold it will not move when engaged in drive except I raise the engine several times when engaged and it will move when the oil gets hot that is when the gear will start selecting and all the gear will select properly.
Note it will enter reverse even when it's cold. Pls tell me what is the best solution thanks

AutoMoTech:

THE PROBLEM MIGHT BE CAUSED BY A NUMBER OF THINGS. DIRTY OIL, WEAK SOLENOIDS, FAULT IN WIRING. YOU NEED PROPER DIAGNOSIS IN OTHER TO ISOLATE THE PROBLEM.
TRY CARRY OUT A SYSTEM SCAN TO SEE IF THERE ARE ANY FAULT CODES STORED.
CHECK THE QUALITY IF THE OIL TOO. IF SMELLY AND BURNT, REPLACE OIL AND FILTER.



@AUTOMOTECH

drmuchin:


how is a gear FILTER replaced?

Pls leave that to the Mechanic...

AutoMoTech:

THE PROBLEM MIGHT BE CAUSED BY A NUMBER OF THINGS. DIRTY OIL, WEAK SOLENOIDS, FAULT IN WIRING. YOU NEED PROPER DIAGNOSIS IN OTHER TO ISOLATE THE PROBLEM.
TRY CARRY OUT A SYSTEM SCAN TO SEE IF THERE ARE ANY FAULT CODES STORED.
CHECK THE QUALITY IF THE OIL TOO. IF SMELLY AND BURNT, REPLACE OIL AND FILTER.


Thanks for the response, but the oil and filter has been changed. When I took it to the gearbox mechanic he said the body valve has to be changed, please can that be the cause
Also if the body valve is changed will the vehicle move smoothly and hope it will not stop working after the repairs maybe for a couple of days or weeks



@AUTOMOTECH