Transmission case sleeves, ZF 4HP22/24 EH valve body questions

[Annddrriy]

Thanks. That is not switch problem. If is program switch dirty or not working then it never removes A and M modes from the cluster matrix display. The problem could be in the cluster or CCM module. Most likely CCM pins don’t have good connections.

[Riri1010]

Hi just saying thank you.
Just went for a test drive and i am getting gears.
Problem was with a clutch i made a stupid mistake when i first assembled it i left out two plates. It gets double steel plates on the beginning and the end of the a clutch.and i missid out and had only single plate on each side.
But a big thank you for the link it really helped alot the mechanical shop wanted to really charge me saying it's a big job to fix. Im glad i did not listen to them. Thank you

[Annddrriy]

I know original transmission going to go down and I am slowly preparing older automatic transmission from BMW 735i E24 which had ZF4HP22H hydraulic version and when I removed transmission from the engine bell housing I could not remove torque converter was unable to remove of rust on top of each cylinder piston and could not turn the engine crank shaft to remove torque converter bolts from engine flywheel. I noticed that torque converter had some kind metal plate attached to the torque converter housing. May I put another torque converter from the ZF4HP22EH version transmission without plate on torque converter housing ? Thanks in advance for your advice !

[shogun]

There is no E24 735. only E23 735. sorry, I do not have any dimensions of the E23 735 and E32 735 torque converter. Check in ETK if the p/n is same

[Annddrriy]

I think ZF EH torque converter it will work but ATF oil cooler hoses connectors needs to be modified.

[whiskychaser]

May I put another torque converter from the ZF 4hp22 EH version transmission without plate on torque converter housing ?

Do you mean the driving plate (aka dog plate)? It is usually triangular and has 3 bolts but on larger engines there can be 4. If so, it cannot be left out - it acts as a sort of cushion and the TC is bolted to it

[Annddrriy]

Yes driving plate with 3 bolts. The engine M30 BMW 735i 1985 E23. I don’t think aka has ZF 4hp22. I don’t think the aka comes with M30 engines to ZF 4hp24.

[shogun]

part numbers are different of the torque converters
E32 735 Torque converter 24231217222 C7 up to 09/1990
E24 635Csi Torque converter 24411215667 Sep '83 - ...

24411215667 R2 usage +E30, +E28, +E34,+E24, +E23, +E32 accdg to ETK

and I assume you biggest headache will be to modify the electronics such as Motronic/transmission control module, as the old hydraulic 4HP22 has no electronics and your original E32 735 has EH electro hydraulic, you are the first one which changes an E32 735 from EH to older style 4HP22 from E24, no one can help you. I assume the DME needs signal from the trans computer

read under Electrical Details: http://www.nmia.com/~dgnrg/page_41.htm
In my opinion such a downgrade of the original E32 automatic transmission to status of transmission development around 1975 - 1985 does not make sense.

[whiskychaser]

Apologies. 'Aka' is short for 'also known as'. Depending where you look in realoem, it is called driving plate or dog. I also searched the 635Csi as the E24 was mentioned originally and came up with part number 24401215514 for the plate. Realoem suggests it is square and requires 4 bolts although a search revealed that items currently for sale appear to be triangular.

https://www.realoem.com/bmw/enUS/sho...13#24401215514

Changing to a 4HP22H does seem a backward step. It is not even clear if the H and EH are the same length so they may require different drive shafts. Similarly, the H will have a cable kickdown arrangement whereas the EH has a switch on the floor.

[Annddrriy]

Yes DME will search a signal from the TCM If you unplug the TCU plug the engine still running and if is running then it can drive in safe mode but on dashboard will be message trans program. To rid of it TRANS PROGRAM from the cluster display it needs to remove the automatic transmission TCM pin 33 and grounded to the chassis ground. ZF 4hp22H has one cable only which connects to the shift selector gears PRND321 and another cable that is connected to the valve body to control hydraulic pressure and another end of that cable goes to the throttle body when revs are increasing ATF pressure goes up.The length of the ZF 4hp22H an EH seems to be the same. The rear housing of the ZF 4hp22H is different but I tried to swap it from ZF 4HP22EH it fits perfectly. You can not put rear housing from H transmission to EH transmission because there is different installation mounts. Front bell housing is also same and if is input shaft length is different then it will not work. In my opinion the input shaft is also the same length. The H version torque converter looks narrow than EH version torque converter. H version torque converter has plate on the back housing of the torque converter that is why a bit narrow. The EH version torque converter a bit wider then H version torque converter because does not has plate.

[Annddrriy]

Why I’m interested to do that of one reason only. when you going to do that you bypass four solenoids in ZF 4HP22EH E9 version. The solenoids which is not available anymore in stock. When you going to do in ZF 4HP22EH E7 version you bypass five solenoids which is also not available anymore in sale. ZF 4hp22H version has no solenoids.

[shogun]

Why I’m interested to do that of one reason only. when you going to do that you bypass four solenoids in ZF 4HP22EH E9 version. The solenoids which is not available anymore in stock. When you going to do in ZF 4HP22EH E7 version you bypass five solenoids which is also not available anymore in sale. ZF 4hp22H version has no solenoids.

all the valve body solenoids for E9 and E7 valve body are still available, original from ZF, aftermarket or used. Or complete valve bodies remanufactured https://zftranspart.mypinnaclecart.c...parent=46&pg=1
solenoid valve examples: https://transend.us/products/transmi...-kits/d69420ak
https://www.automatic-berger.de/ZF-T...LVE-0501315752 https://transpartswarehouse.com/6942...body-only.html

I bet the older 4HP22H parts will be sooner no longer available.

[Annddrriy]

All solenoids are available from ZF aftermarket but not available original same like ignition coil. All solenoids have a bit different ATF pressure of original solenoids from Germany plant. Those all solenoids aftermarket works but not work as it should.

[Annddrriy]

I also agree older 4HP22H parts will be sooner no longer available. What is the main parts in the valve body it does important job ? The valve body lower front and lower rear casting bore usually wear out of the metal valves. The valve body lower rear and lower front casting bore can not do maintenance by machining mechanic. The valve body shifting valves of casting bore can be done by machining mechanic up to exact size.

[shogun]

usually the "repair" of a valve body needs maximum these parts in the link, usually just cleaning, a new gasket and new plastic balls, example of parts needed for 5HP30 = full set including springs etc https://www.thectsc.com/products/val...p30-80-39.html so basically only such parts break/get diry/damaged/are updated: Orifice 1.0mm, 1.7mm, 1.5mm, 1.2mm,Check Ball,Filter Screen,Gasket, O.-Ring, Selector Shift Valve, Compression Springs,Main Pressure Valve,

for the 4HP22 when you order such a kit you have to inform the seller the serial number of the transmission, ZF transmission serial number of the name tag of the trans and the ZF transmission designation. There is no standard set, they select the set based on the trans details.
One of my friends is doing ZF valve body overhauls/reman since >10 years, he recently told me that he never had to replace a steel casting part as you mentioned.

[Annddrriy]

Steel parts can be valve body shifting valves which moves inside the valve body lower front and rear casting assembly bore usually wear out first and when valves shifts very loose it is loosing ATF pressure in channel plate then while driving when gear shifting up and down can be slow shifting or delay to shift a gear dependent which of the valve casting assembly bore has more wear out. If castings assembly bore wear out and that part not available in sales of the age there is one left option only to make a shifting valves bigger diameter size. The valve body gaskets always comes with set of four to E7/E9 and Hydraulic version. Springs could be ordered from plant who makes custom springs or can be found in some other valve body. Check balls and caps are same as from EH version. The channel plate of the valve body never go bad.

[Annddrriy]

I am thinking about I have to try to install EML to get proper gear shifting in BMW 1990/02 E32 E9 version transmission which is comes without EML in 1990 years and 1992 comes with the EML but 1990 come with throttle position switch that is for E7 version transmission with 5 solenoids. Either way there is another one left option to install the valve body E7 version transmission instead E9 version transmission which is doing messy things. That is my opinion you guys don’t have to agree with me if you don’t want to. It’s up to you !

[Annddrriy]

Why EML module I want to install ? It’s just for the one wire which is hidden somewhere on the way to firewall on right side and I can’t identify where that wire yell/grn goes. That’s important signal for TCM I think so. I tried one time to trace the wire from TCM pin 4 and then I have lost it. It is going nowhere it should be in E-Box but there is nothing with the wire colour yellow and green.

[whiskychaser]

Page 2460.0-01 shows the yellow/green wire from TCM pin 4 only goes as far connector X506. It is not used after that.

[Annddrriy]

I assume that wire yellow/green should go through firewall to EML module in E-Box. The wire yellow/green wire is not present in the E-Box. It might wire change the colour when goes through the firewall some of kind 12 pins connector.
The throttle position switch it will work as a throttle position motor but for this project just need to install EML module as I mentioned in previous post.

[Annddrriy]

The transmission went to self safe mode we called limp mode. The transmission TCM searching for a neutral signal from another electrical source like EML module which is present when gear is in position drive but not at the same time neutral. If is neutral gear selected by TCM and at the same time acts forward drive gear and car drive forward all gears shift as fine but TCM is still in limp option. Some of the brakes clutch gear it called spragg on hold and releasing that time when shift selector gear will be manually set in to position neutral and also you will see on dashboard display E economy and N neutral. The engine will be also is in limp home and will be acting like misfiring because of the messing around computers between each other TCM and DME. Even if CID sensor is in good condition but will be not able communicate with DME and work as well as should. The engine DME needs a proper signal from the automatic transmission TCM even if you disconnect transmission from the engine I mean removed from the engine then the engine will still gets misfire.

[Annddrriy]

Anyone could tell me what is the difference between automatic transmission TCM and valve body E7 early and E7 late version please ? Thanks in advance for your help !
The Electronic Control system was first introduced in 1986 and was incorporated into the totaly hydraulic 4HP-22 unit produced by ZF. It combines the hydraulic control of forward and reverse gear engagement, with electronic control for automatic upshifts from 1st thru 4th and automatic downshifts from 4th thru 1st gears. Three different versions of valve bodies have been used on BMW vehicles, with minor differences between them The 1st version, designated Early "E-7", has 5 solenoids on the valve body, was introduced in 1986 and used up thru 1989. This version includes a solenoid for reverse lockout. The 2nd version, designated Late "E-7", has 5 solenoids on the valve body, was introduced in 1988 and used up thru Mid-1989. This version includes a solenoid for reverse lockout.

[Annddrriy]

Late "E-7" Models Only (5 Solenoid): A three position slide switch with Digital display of the three individual positions in instrument cluster (E-S-M). The switch is a momentary contact and spring loaded to a neutral position.
When you select S mode and set position selector gear in to Drive Mode then what do we will have on display E or S or D ? That is in three program switch and in two program switch when you select gear selector mode in to D you have it D and when you select selector gear in to 3-2-1 you will have it S mode ? Thanks !

[shogun]

limp home mode: limp mode is not only related to a transmission problem, in many cases it is a security feature which activates when the engine or transmission control unit picks up a fault. Once it detects a problem, limp mode will cause the less important parts of the car to switch off, and the speed of the car will be reduced. Causes for limp mode can be from faulty engine sensors, components or wiring, transmission issues, brake and clutch problems, etc, there are many reasons why a vehicle will enter limp mode, depending on the model.

TCM differences you will only know when you remove the eprom chip from both units and compare the programs.

E-S-M: see page 28 owners manual http://www.e38.org/e32/e32_1988_manual.pdf and more in detail pages 32 - 35 http://www.e38.org/e32/E32_1992_Owne..._optimised.pdf

[Annddrriy]

There is no mention about in 3 position switch when you select S mode what you will see on dashboard display when you select gear number 3 and press on the program switch button S ? What do we will see number 3 or letter S ?