Rough gear change after transmission fluid/filter change

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Dec 25, 2010 | 01:32 PM

#11

treant985

Thread Starter

Drifting

Joined: Dec 2010

Posts: 26

Likes: 1

Quote:

Originally Posted by ljdiscovery

I recently had the transmission changed out in my DI. When I went to pick it up, it was shifting hard. Took it back to the shop and one of the techs got in and rode around with me for 30 minutes or so. We would drive and adjust and drive and adjust. After about 4 or 5 adjustments, the tranny shifted like silk, better than it ever had before. Amazing. I know that the DII tranny has eletronic controls but sometimes it is worth paying an expert to do what they do. Good luck. If it continues to give you problems, it may be worth having a good tranny mechanic take a look and make an adjustment or two. All the best. Merry Christmas. Phil

Thanks. By "adjust," do you mean he had connected a tool to the ECU or something?

I figure the car will eventually figure itself out, but given that the old fluid was in very good shape (nice color and thin), I may do another change with just ATF.

Dec 25, 2010 | 01:53 PM

#12

lipadj46

TReK

Joined: Oct 2008

Posts: 3,106

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Quote:

Originally Posted by Disco Mike

If you are going to shoot you mouth of about a product, back it up with good technical information or drop it.

Its christmas Mike take it easy. I know people in this forum are adding this stuff blindly because you say to but they need to hear some counter opinions. Tell me what Lucas AT conditioner is supposed to do? Whatever that is a real ATF will do it better and cheaper. If you don't want to hear it from me go over to bob is the oil guy, click on the ATF forum and ask what the opinion is of Lucas AT conditioner or lucas in general. The only time it may come in handy is if you have used the wrong fluid and need to thicken it up to get the proper frictional properties to shift smoothly. But in that case use the correct fluid and be done with it.

In this post the OP used Valvoline maxlife a synthetic fluid with the proper amount of friction modifiers, antiwear additives, detergents, high pressure additives, seal conditioners etc. Adding Lucas just dilutes everything and effects the friction properties.

Dec 25, 2010 | 05:12 PM

#13

ljdiscovery

Recovery Vehicle

Joined: Jul 2007

Posts: 1,227

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From: La Jolla, California

the DI has a mechanical transmission, no ECU, the DII has the ECU. On my DI, the mechanic made some adjustments near the throttle body, not sure exactly, but what a difference. Shifts smoothly, kicks down properly, etc. As for the DII, if it doesn't smooth out soon, it may be worth you while to have a good transmission guy/gal take a look. Phil

Dec 27, 2010 | 11:54 AM

#14

treant985

Thread Starter

Drifting

Joined: Dec 2010

Posts: 26

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Well I changed out the fluid and put in just ATF with no lucas. I'll drive around today and see how it does. All I can say so far is that it was a lot easier to pump the ATF in (using one of those little hand pumps) than it was to pump the ATF+Lucas combo (which felt like pumping molasses!).

Dec 27, 2010 | 02:51 PM

#15

treant985

Thread Starter

Drifting

Joined: Dec 2010

Posts: 26

Likes: 1

Car is shifting much more smoothly now. I think it just wasn't used to the thicker ATF+Lucas combo: it would require more throttle to accelerate and it would idle at a lower RPM.

Overall, the fluid is still about 4% lucas by volume (8% before I changed it the 2nd time), and the old fluid was in good shape, so I don't think I'd need more lucas than that anyway.

Thanks for the help guys. Now to get rid of the three amigos that turned on last week....(abs amigo is in the mail)