e38 p0740了

[pine]

因為前幾天突然儀表板亮燈 Trans program..儀表左邊的燈也全亮了..我以為是皮帶斷了..就趕快熄火檢查..用簡易電腦診斷顯示P0740..Excessive slip 怎麼辦...現在開起來好像沒什麼狀況..但前上個星期才換過變速箱油網..曲軸後油封..變速箱前油封耶..

[hacat]

雷腦先復歸看看，字面意思傾向變速箱。

[pine]

有用簡易電腦消故障碼，可以嗎？

[superman99]

先消除，開一段時間再用電腦測測看會不會有故障碼，如果沒有，應該就OK, 如果有就要去保養廠檢查囉！
請問你的變速箱油是換幾瓶? 舊的油有很髒嗎？

[樂大]

P0740 扭力轉換器閉鎖裝置故障


BMW原廠在2008/02有出SI 24 03 06的技術通報
====================================================
SUBJECT
ZF 5HP19 Transmission - Diagnosis of EGS FC 048 (30 hex)


MODEL
E46: 323i, 325i, 330i with M52TU, M54, M56 and ZF 5HP19

E39: 525i, 530i with M54 and ZF 5HP19

E85: Z4 roadster 2.5, 3.0 with M54 and ZF 5HP19


SITUATION
"Service Engine Soon" is illuminated and fault code 048 "Converter lock-up excessive slip" (30 hex or P0741) is stored in the EGS transmission control module.

CAUSE
Possible cause: deterioration of the torque converter turbine shaft seal

PROCEDURE

1.Remove the torque converter. For the removal procedure, refer to Repair Manual RA24 40 002.
http://www.bmwcct.com.tw/forums/attachment.php?attachmentid=92100&stc=1&d=1402972830 http://www.bmwcct.com.tw/forums/attachment.php?attachmentid=92101&stc=1&d=1402972830

2. Drain the fluid out of the torque converter, and carefully inspect the turbine shaft seal (1) INSIDE THE BOTTOM OF THE TORQUE CONVERTER for signs of damage (cracks, splits, etc.).Helpful Hints:

3. Use a small flashlight to illuminate inside the bottom of the torque converter to examine the turbine shaft seal. The turbine seal is brownish orange in color and measures approximately 1" in diameter.
If evidence of seal deterioration is found, replace the torque converter.


Additionally, if the transmission fluid shows signs of deterioration ("dirty fluid"), the fluid should be replaced in conjunction with the fluid strainer. For the strainer replacement procedure, refer to Repair Manual RA24 31 151.

Refill and/or top off the fluid level according to Repair Manual RA 00 11 500, using ESSO ATF LT 71141 (P/N 83 22 9 407 807).

If after careful inspection it appears that the turbine seal is intact, contact Automatic Transmission Enhanced Technical Support (TeileClearing) for further diagnostic instructions. Submit the "regular technical support" PuMA case, referencing SI B24 03 06 in its title.

WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty.

Please refer to the latest KSD for the appropriate model applicable labor allowances.

Defect Code
24 40 02 61 00


Labor Operation
24 40 002
Main Work*

Replace torque converter

or

Labor Operation
+24 40 502
Replace torque converter

*Main Work:
Use this labor operation number when this is the only repair being performed, or if this is the main repair when performed along with other repairs at the same time. If this is not the main repair, refer to KSD for the associated (+) labor operation code.

[樂大]

先確認你上個星期換的變速箱油和濾網是否合規範
你的變速箱是5HP19用油的規範是LT 71141
變速箱濾網有遇過用副廠濾網外觀看都一樣，但因為濾網內部設計不良，造成吸油不足.
如果油位也都正常...
那就有可能是技術通報中的扭力轉換器了!!