Subject: Thank you Shogun for pointing out the difference! Author: 1988BMW750iL : member since January, 2006 : 46 posts Posted on: 2007-05-14 13:51:53

I had been noticed the difference about my 88 tranny while I replaced about a year ago at my mechanic shop. The housing of casted tranny stamped 4HP22 but plate showed clearly 4PH24. At that time, I was confused these two numbers but now I know that two models share the same housing.

Due to my '88 new installed used tranny has 7 pins connector, compared to my original 8 pins, there is reverse solenoid pin missing in the late 4PH24. (This function on late tranny is built into another soleniod.)

My IP currently shows Trans Prog error message once I turned on the engine. I don't know what happened yet but no matter what, I need to put the original back so the electronic transimssion module won't miss any signal at least.

I am trying to collect more information for my rebuild. These pictures with little hints are my best friend since picture is much better than text description. However, too many things happened on my ride. I need to get rid of these symptoms one at a time.

My original tranny showed slip gear change from 1 to 2 to 3 till warm-up. Other than that, she was working fine.

Can't wait to see my ride on the road again. You see, people who changed their tranny are with smiling face :-)

It is long way to fix my ride but I am in progress, even slowly.

Cheers,

Rocky
1988/4 750iL - smoking engine

• Finally writeup for E32 5HP30 VB rebuild and filter change(Big) (pic) - JeffC 93 740iL 2007-05-12 23:33:45 (12962 views)
  • Re: Finally writeup for E32 5HP30 VB rebuild and filter change(Big) - realtygary 2007-05-19 01:13:53 (573 views)
  • Thank you. Glad you approve. (nt) - JeffC 93 740iL 2007-05-13 23:24:18 (399 views)
  • Re: Finally writeup for E32 5HP30 VB rebuild and filter change(Big) - 1988BMW750iL 2007-05-13 18:08:14 (682 views)
    • Rocky, yours is a 4HP24 EH (url) - shogun 2007-05-13 21:51:44 (646 views)
      • I am sure that it is different. but similar ar the same time - JeffC 93 740iL 2007-05-13 23:02:01 (385 views)
        • Thank you Shogun for pointing out the difference! - 1988BMW750iL 2007-05-14 13:51:53 (358 views)
  • Thats a thorough write-up. Congrats and well done! (nt) - amuso 2007-05-13 03:52:18 (358 views)
  • Excellent write-up. Thanks for sharing! (nt) - Johan750 2007-05-13 02:48:17 (362 views)
  • HOLY CRAP!!! - plbowler 2007-05-13 00:08:33 (525 views)
    • NO SHIT! - eldragon 2007-05-13 00:37:31 (407 views)