wingless

It is unlikely that a loose broken part, like a snap ring fragment, ending up above the valve body, could possibly affect the sealed hydraulic system, causing the reported symptom. The hydraulic port mating surfaces are shown arranged in a line in the top and bottom on these images of the completed transmission assembly and completed valve body assembly.

Kball9217

Yes I have been wrenching on cars sense I could remember not saying I'm a professional by no means but I have swapped a lot of transmissions so that's no the issthei just don't want to swap the trans thinking it's not functional and it still have life left in itLet's just say the shift cable is adjusted properly, what would be my next step to diagnosing my issue. what else could cause my no reverse/neutral is drive

wingless

Let's just say that the ONLY way for Neutral on the center console shift level selector having Drive on the transmission is for the shifter cable to be incorrectly adjusted.

Look at the shaft end in the top left corner of this image. This shaft is rotated by the shifter cable. The shift cable connects to the gear selector lever. The gear selector lever is connected to the outer (cylindrical) part of the shaft. (The inner shaft is connected to the throttle valve.)

The rotation of this shaft directly moves the manual valve within the valve body assembly. That manual valve is a cylindrical spool valve. The linear position of that spool valve causes the high pressure ATF to activate / deactivate different sections of the valve body. Section 21 of the FSM shows that VERY clearly, with a full page diagram showing the fluid path in each of the center console shift lever positions: Park / Neutral / Drive / M2 / M1.

As an example the ONLY way for high pressure ATF fluid to reach the passages required for the transmission to be in Drive is for the manual valve to be positioned to permit that flow. That position is determined by al the shift parts, from center console to manual valve.

If Drive happens when the gear selector is set at Neutral then the cable is incorrectly adjusted. Only, only, only possibility.


Is there a reason why there is ongoing objection to properly adjusting the shift cable?


As a fall back alternative, it is possible that the vehicle might be repaired using a combination of burning various incense products, while vocalizing appropriate incantations, combined with appropriate music and body movements Animal sacrifices may or may not be required for this process to attain acceptable results.

Kball9217

Is it possible that the shift itself has been stretched somehow some way and that is why it's not sitting in the correct gear range that the enter console shifter is saying iys in? I have tried adjusting the shift cable itself about 3 times now here's a write on the procedure I have done correct me if I'm wrong please
PUt vehicle in park remove shift cable from gear selector lever. Removing plastic retainer clip from shift cable assembly, move center console shifter into low gear (1st gear) manually move gear selector lever into low gear
Reattach shift cable to gear selector lever reattach plastic retainer clip to shift cable assembly put vehicle back in park and try to start it
CCorrect me if I am wrong on the procedure please thank you all your help is greatly appreciated

wingless

The FSM page 21-202 details the ten steps to adjust the shift cable.

That page also details the seven steps for the throttle cable adjustment.

Once properly adjusted then cable stretch has zero effect.

Kball9217

Anyway you could attach the procedure I must have the wrong FSM

wingless

No, as has been stated, the FSM is a required tool for those turning their own wrenches on this vehicle.

wingless

Here is a 93 ZJ service manual set. Others are available. Another option is to instead get the 94 ZJ manual, for an identical vehicle, but the manual is a single document.

wingless

Note that according to the FSM, if the bespoke WOT "test" was performed w/ the center console gear selector in Park, but the transmission was partially in Reverse because of the incorrectly adjusted cable, then the Front Clutch and / or the Rear Band are likely the source of the fresh fluid contamination that collected on the transmission filter from that "test".

Note the Overdrive Direct Clutch is also engaged but the centrifugal valve would not have permitted partial engagement / friction wear.

Kball9217

If the shift cable is adjusted properly it should start in park and in neutral correct

Kball9217

Just earlier today I went out jacked it up off the ground put it in neutral and tried starting it in neutral. It fired up no problem in neutral but tires were still spinning as if it were in drive then I went to put it in park while it was running and it completely died . Went to fire it back up in park and wouldn't start so tried it in neutral again and same thing fired up and tires were spinning as if we're in drive put it in park and it didn't die it stayed running . Shut it off and it fired right back up in park so I guess my question to you is if the transmission wasn't really in neutral it wouldn't have fire up in neutral correct? But sense it does fire up in neutral and in park that should mean that my shift cable is adjusted properly right? It if wasn't adjusted properly it wouldn't fire up in neutral ? Correct me if I'm wrong. I also found another forum that you had posted on and you had attach some pictures of the procedure on how to properly adjust the shift cable and I went through that process multiple times and still same issues so I'm guessing it has a internal problem with the transmission

Kball9217

wingless

The shift cable moves several things within the transmission.

The gear selector lever on the transmission rotates the cylinder attached to an assembly that moves the manual valve. As shown in this valve body image, there is also a purple arc attached to that assembly. That arc has depressions at neutral and at park. The transmission assembly image shows the Park / Neutral switch. The plunger on that switch falls into the depression on that purple arc, completing the circuit for the starter.






The shift cable must be adjusted such that the manual valve position corresponds to the center console shift lever position. It must also satisfy the Park / Neutral start switch.

If the transmission is in Drive while the console is in Neutral then the cable is not adjusted properly.

wingless

This means the shift cable is not adjusted properly. When my ZJ is hanging in the air w/ the engine running and the transmission in Neutral the wheels are not spinning.

It starts in neutral on the center console shift lever position because the position of the purple arc on the valve body is good enough to make the transmission start switch "happy".

My impression is that every single symptom that has been shared only indicates that the shift cable is adjusted incorrectly.

wingless

This procedure is not familiar to me.