Pink Milkshake Recovery: Converter

[octanejunkie]

Hmmm
So if I wanted to 4x swap a trans with TC into my 2wd 99, I have to source a 99-00 donor?

Correct. You can turn your e into an F though with just a few parts.

Yes, that is correct.

IIRC [MENTION=139000]phattyduck[/MENTION] swapped his 99 with a 97 trans/TC

 

[MStudt]

IIRC [MENTION=139000]phattyduck[/MENTION] swapped his 99 with a 97 trans/TC

Not sure if the manual to auto played a roll or not? The 99 had two transmissions depending the production date. Maybe he knew that, or maybe he got lucky.

To clarify a little more. For a 99 transmission you'll need to check the production date of the transmission. I think in June of 99 Toyota switched from the T500955 to the T500956. So if your production date is 5/99 or prior you could use a transmission from a 97-98. Post production date of 6/99 you'll have to stick with a 99-00 transmission.

Mike

 

[octanejunkie]

Not sure if the manual to auto played a roll or not? The 99 had two transmissions depending the production date. Maybe he knew that, or maybe he got lucky.

To clarify a little more. For a 99 transmission you'll need to check the production date of the transmission. I think in June of 99 Toyota switched from the T500955 to the T500956. So if your production date is 5/99 or prior you could use a transmission from a 97-98. Post production date of 6/99 you'll have to stick with a 99-00 transmission.

Mike

How do I easily check the production date of my transmission?

 

[thegipper]

I swapped a 99 tranny into my 97 without any issues. The 99 tranny has the different style valve body. Everything hooked up fine and I didn't need to change anything.

I did the swap a little over a year ago and I've had no issues.

 

[MStudt]

How do I easily check the production date of my transmission?

The production date is on the sticker in your door jam.

I swapped a 99 tranny into my 97 without any issues. The 99 tranny has the different style valve body. Everything hooked up fine and I didn't need to change anything.

I did the swap a little over a year ago and I've had no issues.

Everything will hook up just fine from a 99 to an 01 as well, but that doesn't mean it'll work properly. If you used an early production date 99 transmission in your 97 you'll have the same valve body, and won't have any issues.

The 99 has two style valve bodies depending on the production date. Anything produced 5/99 and prior has the T500955 transmission. Anything 6/99 and after has then T500956 transmission. Mix matching those will cause a valve failure, but just how long that takes I don't know.

 

[thegipper]

The production date is on the sticker in your door jam.



Everything will hook up just fine from a 99 to an 01 as well, but that doesn't mean it'll work properly. If you used an early production date 99 transmission in your 97 you'll have the same valve body, and won't have any issues.

The 99 has two style valve bodies depending on the production date. Anything produced 5/99 and prior has the T500955 transmission. Anything 6/99 and after has then T500956 transmission. Mix matching those will cause a valve failure, but just how long that takes I don't know.

I've never heard that before. Do you have any links with more information on this?

From what I've read on here, 96-98 tranny's have a different valve body than the 99-00 tranny's but there are no other changes. The 01/02 tranny's do not have a kick down cable and also have a different amount of shift solenoids which is why they do not work with the 96-00 transmissions.

I've never read (other than now) that using the different valve bodied tranny, was in any way potentially harmful. I'm curious as to how it would be bad? The original valve body is still in the original transmission. I could see how it may be an issue if you installed a different valve body in the tranny then what it originally came with. Unless something electronically from the ECM would be sending a different "signal" to the solenoids than it would normally be getting. All of the connectors are the same and everything else, from what I can remember, is identical.

 

[johnbyebye]

I've never heard that before. Do you have any links with more information on this?

From what I've read on here, 96-98 tranny's have a different valve body than the 99-00 tranny's but there are no other changes. The 01/02 tranny's do not have a kick down cable and also have a different amount of shift solenoids which is why they do not work with the 96-00 transmissions.

I've never read (other than now) that using the different valve bodied tranny, was in any way potentially harmful. I'm curious as to how it would be bad? The original valve body is still in the original transmission. I could see how it may be an issue if you installed a different valve body in the tranny then what it originally came with. Unless something electronically from the ECM would be sending a different "signal" to the solenoids than it would normally be getting. All of the connectors are the same and everything else, from what I can remember, is identical.

I would like more information on this as well. I'm about to put a pre 5/99 tranny in my 2000.

I'm swapping the transmission as a whole and not interchanging any parts so I don't see how that could cause a valve failure...

 

[MStudt]

I've never heard that before. Do you have any links with more information on this?

From what I've read on here, 96-98 tranny's have a different valve body than the 99-00 tranny's but there are no other changes. The 01/02 tranny's do not have a kick down cable and also have a different amount of shift solenoids which is why they do not work with the 96-00 transmissions.

I've never read (other than now) that using the different valve bodied tranny, was in any way potentially harmful. I'm curious as to how it would be bad? The original valve body is still in the original transmission. I could see how it may be an issue if you installed a different valve body in the tranny then what it originally came with. Unless something electronically from the ECM would be sending a different "signal" to the solenoids than it would normally be getting. All of the connectors are the same and everything else, from what I can remember, is identical.

I had a couple typos in my responses, but it should matter much.

The first transmission was used from 96 to 5/98 (rather than 5/99). From 5/98 through 2000 had a different valve body. Then the 01-02 switched to a drive by wire transmission.

So there was really a split in production in 98 rather than 99, and that's when the valve body changed. The valve body on the later are longer, and have all three solenoids are on one side of the valve body. The later also did away with the fluid tubes, and incorporated passages in the valve body for the fluid.

Mike

 

[johnbyebye]

I had a couple typos in my responses, but it should matter much.

The first transmission was used from 96 to 5/98 (rather than 5/99). From 5/98 through 2000 had a different valve body. Then the 01-02 switched to a drive by wire transmission.

So there was really a split in production in 98 rather than 99, and that's when the valve body changed. The valve body on the later are longer, and have all three solenoids are on one side of the valve body. The later also did away with the fluid tubes, and incorporated passages in the valve body for the fluid.

Mike

You're confirming what has been said: valve body changes.

What is the correlation between this and valve failures though? That's what I'm curious to know.

 

[MStudt]

You're confirming what has been said: valve body changes.

What is the correlation between this and valve failures though? That's what I'm curious to know.

Correct, but added the changed started after 5/98 rather than 5/99.

Valve bodies control shift patterns, and take signals from the ECU. The ECU's would be the same so that shouldn't be an issue. The shift solenoids are also the same from a 98 to a 99 so it should shift the same as well. As far as the difference in the valve body itself causing an issue. I can't answer that.

I know people have swapped them in the past, but it's not something I would chance.

 

[johnbyebye]

Correct, but added the changed started after 5/98 rather than 5/99.

Valve bodies control shift patterns, and take signals from the ECU. The ECU's would be the same so that shouldn't be an issue. The shift solenoids are also the same from a 98 to a 99 so it should shift the same as well. As far as the difference in the valve body itself causing an issue. I can't answer that.

I know people have swapped them in the past, but it's not something I would chance.

Okay thanks. With my 99 tranny going into a 2000 I won't be concerned.

Just to be clear, you stated this above:

Just make sure you'll swapping a transmission from a 99-00 only. 3rd Gen's have three different transmission options. Although they'll all bolt up just fine they do have valving differences that will cause a failure on other years.

Mike

Am I misunderstanding this part?

 

[thegipper]

There are several of us who have done the swap (96-98 to 99-00 or vice versa) and I haven't read/seen any issues to date.

Since the correct valve body is still in the original tranny, I don't ever see it being an issue. The signal that the ECU is sending to solenoid has to be pretty simple based on how simple the tests are following the FSM (ohm test, 12v to see if it opens/closes and pressure test to make sure it seals).

Assuming that there isn't a huge difference in shift points between the years, the ECU (no matter what year) is still sending the same basic signal (12v) to open or close the solenoid. I did all of these tests when I was trying to figure out what was wrong with my original tranny. I ended up buying new solenoids even though the original ones all passed the FSM test and the new solenoids didn't fix the problem. I wasn't surprised but I was desperate at that point.

Since I've done the swap, I haven't notice any difference in the way the new (99) transmission shifts or otherwise operates. Based on all this, I think its safe to say it should be fine.

Now if you can easily find a replacement tranny from the exact same year (or year range based on what we know), that is obviously the best case scenario.

Just my opinion on the matter and I'm definitely no expert on this.

 

[thegipper]

One other thing I forgot to add. The ECU from my 99 is different than the ECU in my 97. I had to swap over the engine harness to get my 99 motor to work with my 97 (blew a head gasket on my 97 and decided to swap motors instead of fixing the HG).

So my 99 transmission is being "told what to do" by my 97 ECU, again, without any issues.

Hope this helps.

 

[MStudt]

Okay thanks. With my 99 tranny going into a 2000 I won't be concerned.

Just to be clear, you stated this above:



Am I misunderstanding this part?

I know what I typed above, and it confirms that you'll be OK with a 99 transmission in a 00.

I'm not sure if you're misunderstanding the second part or not. That's something that you'll have to answer.