Transmission only park and neutral

Good morning,

No, to the bands. This sounds like the front pump or the torque converter may have failed not allowing any pressure build-up in the valve body.

https://www.2carpros.com/articles/automatic-transmission-problems

I attached the procedure for testing the line pressure to verify the actual pressures.

I also attached the possibilities for the codes. There is no 21696 code at all. Can you double-check that?

This could be a solenoid issue but needs to be confirmed. You will need an advanced scan tool that can activate the solenoids to verify they are functioning correctly. I attached a wiring diagram as well for you of the transmission.

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-use-a-voltmeter

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Roy

Line Pressure Test

CAUTION: Carry out Line Pressure Test before carrying out Stall Speed Test. If line pressure is low at stall, do not carry out stall test or further transaxle damage can occur. Do not maintain WOT in any gear range for more than 5 seconds.

CAUTION: The Transmission Tester must be removed from the transaxle and the vehicle harness connected to verify these pressures.

The Line Pressure Test verifies that the line pressure is within specifications.
1. Connect pressure gauge to line pressure tap.

Line Pressure Tap
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2. Start engine and check line pressures. Refer to following the Line Pressure Chart to determine if line pressure is within specifications.
3. If line pressure is not within specifications, carry out on-board diagnostics and pinpoint test, air pressure check and repair main control system or pump as required.

Line Pressure Chart (2.3L and 3.0L)
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Line Pressure Diagnosis
If the line pressure is low at idle in all ranges check the following items:
^ Low fluid level
^ Restricted inlet filter
^ Loose main body
^ Solenoid body or accumulator body to case bolts
^ Excessive leakage in pump
^ Case
^ Control bodies
^ Sticking main regulator valve or damaged inlet tube seal on inlet filter
^ Damaged gaskets or separator plate

If the line pressure is high at idle in all ranges then check the following items:
^ Main regular valve
^ Solenoid body and wiring harness
^ Run Quick Test referred to in electrical diagnosis

Well, maybe back when I worked as a mechanic I might have had access to an advanced scan tool but from my home garage not so much is there another way?

I decided to pull the valve body out to see if I could visibly see any blockage I'm not a transmission guy so this is relatively new to me should the springs be loose and bouncing around inside the valve body?

Also the solenoid on the face of the body plastic is loose don't know if that matters much .

I've attached a picture where the spring is loose and bouncing back and forth if you move it marked by the red arrow.

I would remove that and make sure it is not broken.

The first thing you should have done is the pressure test to see if the front pump is working.

Roy

So I take it a loose spring is a bad thing.

There should be some tension there.

Roy

Sorry if these are obvious questions like I stated before I'm new to transmission work so bare with me. the other side seems to have the tension and I pulled the springs to figure out why it doesn't have tension and for the life of me I don't see anything. do you happen to have a diagram of the valve body tear down?

Is there a special sequence to starting after a valve body replacement? Before I go head first into blowing up my transmission I figured I would ask an expert first. I have replaced the valve body with a updated rebuilt one.

I posted the torque below for you for the valve body.

. Install the main control valve body assembly. Tighten the bolts in the sequence indicated.
^ Tighten to 10 Nm (89 inch lbs.).

I also attached the bolt tightening sequence for the valve body as well.

Roy

Yes, I already did all that and tightened in correct sequence etc. I guess I wasn't very clear my apologies what I meant is there a special start up procedure? I.E. for resetting the transmission and or smooth pairing with new valve body. My Volkswagen Touareg had to relearn the throttle anytime you took the throttle body off. that's why I ask.

Okay, no, there is no start-up procedure or programming. It is a plug-and-play. Just verify the fluid level is correct.

Roy

Thanks for the help.

You are welcome.

Always glad to help.

Roy

Well, this is frustrating. Not sure where I went wrong here but replaced the valve body torqued it to spec and in correct sequence hooked it up put everything back together and it won't even try to start the relays click but no crank. Any ideas?

Okay, I attached a wiring diagram of the starting system for you to view.

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-use-a-voltmeter

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Make sure the range sensor on top of the transmission is tight and the connector is all the way in. This would be the only connection with the starting system from this repair. I attached some pictures for you below.



Roy

Is this in drive or neutral the pictures? I've looked at it's hard to tell.

I cannot tell from that picture. Have someone in the car with their foot on the brake and start it and run through the gears. Then you can be sure what gear it is in.

roy

Update: I have replaced the transmission valve solenoid and valve body after one of my buddies told me that was the issue since he has more experience with transmissions than myself. unfortunately it seems to only want to shift gears when the engine is cold once warmed up it has a problem with shifting into any gear, then if I turn it off open and close the driver door and lock letting everything power down fully. then when I start it and put into gear it works for about 200 feet then fails again. Any thoughts my buddy is stumped?

Okay, back to the beginning. Did you ever check the line pressure as I suggested? This sounds like you have an internal failure but you need to confirm it.

Roy

I got a pressure testing kit today haven't had a chance to do the test yet but scanned for codes and only got one code back p0720 the oss sensor, but would that cause my issues?

No, it will not.

Do the line pressure test and keep me updated.

Roy

Okay so did the test .
Idle. Stall
P/n. 60-75. 0-60
R. 60-75. 120-150
D. 30-90. 0-30
2. 30-50. 0-20
1. 30-50. 0+

As you can see, the drive is too low. It is under half of what it should be.

Looks to be an internal failure. You will need to replace it with either a rebuilt unit or a used unit.

I attached a YouTube video of the replacement.

https://www.youtube.com/watch?v=sU8ZL5uSOVQ

https://www.youtube.com/watch?v=9F1oJZxCvMg

Roy