Honda Transmission Problem Root Cause and a Fix?? - Page 54
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Thread: Honda Transmission Problem Root Cause and a Fix??

  1. #796
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    786, How did you know your A&B clutch pressure control solenoids (28250-p6h-024) needed changing out? Did you do this yourself?

    What about your clutch pressure control solenoid valve C (28250-p7w-003)?

    Did you take this off and see if there's any clogging problem there? Resistance between the 2 terminals should be 3-10 ohms. Connect the No. 1 terminal of A/T clutch pressure control solenoid valve C to the battery positive terminal, and connect the No. 2 terminal to the battery negative terminal. A clicking sound should be heard.
    2002 Odyssey 160K, 1st tranny rebuild at 129K
    '89 Honda Goldwing
    '89 Mercedes 190 2.6L

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  3. #797
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    Quote Originally Posted by 786 View Post
    Thank you for all guru's this is my first post.

    My problem was shifting from 1 to 2 hardly jerk no error code then I have done below parts.

    I have changed the Solenoid Assy Shift Part # 28200-P0Z-003 and SOLENOID ASSY LINEAR part # 28250-P6H-024 and pressure drain & fill fluid.
    on my 1999 Ody, it has still littel jerk from 1 to 2 up shift but it improve the 2 to 3 and 3 to 4 up and down shifts.
    Question? do I need to change the 3rd and 4th clutch oil pressure switches part # 28600-P7Z-003?


    Thanks
    Excessive shock or flares on 1-2 upshift or 2-1 downshift:

    Shift solenoid valve C defective
    2nd clutch pressure switch or circuit defective
    Foreign material in separator plate orifice
    Shift valve C defective
    1st accumulator defective
    2nd accumulator defective
    1st check ball stuck
    2nd check ball stuck
    1st clutch defective
    2nd clutch defective

    Check the D4 indicator, and check for loose connectors.
    Inspect the O-rings, and check the shift solenoid valve for seizure.
    Check the D4 indicator, and check for loose connectors. Check that the outlet is not clogged inside of the connector.
    Check the 1st and 2nd clutch pressures.
    Inspect the clutch piston and O-rings. Check the spring retainer for wear and damage. Inspect the clutch-endplate-to-top-disc clearance. If the clearance is out of tolerance, inspect the clutch discs and plates for wear and damage. If the discs and plates are worn or damaged, replace them as a set. If they are OK, adjust the clutch end plate clearance.
    Attached Files Attached Files
    2001 Odyssey LX
    2003 ACURA EL Touring

    UNOFFICIAL 2001 ODYSSEY THREAD: http://www.odyclub.com/forums/showth...664#post384664

  4. #798
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    Hi Aaronm,

    Because, ohms was incorrect my Solenoid Assy Shift Part # 28200-P0Z-003 31 ohms and it should be between 12 to 25 ohms.
    I did'nt change the clutch pressure control solenoid valve C (28250-p7w-003)

    Thanks

  5. #799
    786
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    Hi New Dad New Van,

    Is this the Shift solenoid valve C copy attached? I can't find this part 28250-p7w-003 in any part store.

    you wrote very tecnically stuff in your post I am not that technical, please let me know do I have to change!

    Shift solenoid valve C defective
    2nd clutch pressure switch or circuit defective

    Thanks
    Attached Files Attached Files

  6. #800
    Registered User New Dad New Van's Avatar
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    Yes, that is the correct page for the Shift Solenoid Valve C.

    I am not a transmission expert, but if it were my van, I would concentrate only on the 2nd Clutch Pressure Switch and its circuit. Make sure the connector has a good connection on the Switch. If you still have the 1-2 shift problem - replace the Switch. This will not guarantee to fix your problem on a 12 year old transmission, but there is a good possibility that it will.
    2001 Odyssey LX
    2003 ACURA EL Touring

    UNOFFICIAL 2001 ODYSSEY THREAD: http://www.odyclub.com/forums/showth...664#post384664

  7. #801
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    Part # for the 2nd Clutch Pressure Switch is 28600-P7Z-003 ($50 online).

    Here is good thread to read:
    2nd clutch pressure switch question
    2001 Odyssey LX
    2003 ACURA EL Touring

    UNOFFICIAL 2001 ODYSSEY THREAD: http://www.odyclub.com/forums/showth...664#post384664

  8. #802
    786
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    Thanks New Dad New Van you guys have great knowledge.


    Thanks

  9. #803
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    Failing engine mounts can create a clunk at low speeds too, as the engine is allowed to shift. Search on "engine mounts clunk" to see if this could be your issue too.
    2001 Odyssey LX
    2003 ACURA EL Touring

    UNOFFICIAL 2001 ODYSSEY THREAD: http://www.odyclub.com/forums/showth...664#post384664

  10. #804
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    That pdf link is for the Shift Solenoid Valve C (and B.) This is different from the A/T Clutch Pressure Control Solenoid Valve C that I was talking about, part number 28250-p7w-003. That shift solenoid is probably buried under the starter.

    I'd inspect and test the clutch pressure control solenoid valve C first. Make sure the screens aren't plugged up inside. Only 4 bolts hold it onto the tranny. I removed the top 2 bolts by reaching down through the hood and removed the bottom 2 bolts from underneath the van. Not too hard to get at once you move things out of the way; battery, battery tray, etc...

    If it needs replacing; a Honda dealer, ebay, or Honda online parts supplier is probably necessary.
    Last edited by aaronm; 11-18-2011 at 03:49 PM.
    2002 Odyssey 160K, 1st tranny rebuild at 129K
    '89 Honda Goldwing
    '89 Mercedes 190 2.6L

  11. #805
    786
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    Hi aaronm,

    If you are talking about Clutch Pressure Control Solenoid Valve C as mentioned in the below link, if yes. Yes I have replaced.

    2000 Acura Tl Problem

    Thanks

  12. #806
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    Your link seems to show the AT clutch pressure control solenoid valves A and B (28250-p6h-024). AT clutch pressure control solenoid valve C is different, part number 28250-p7w-003.

    You replaced A&B, but what about C? I'll see if I can post a pdf.
    2002 Odyssey 160K, 1st tranny rebuild at 129K
    '89 Honda Goldwing
    '89 Mercedes 190 2.6L

  13. #807
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    Touser and 786,

    Here's herrhaus's writeup dealing with potentially clogged clutch pressure control solenoids A,B and C. from page 9 of this thread http://www.urvi.net/herrhaus/Clutch_...noid_Valve.pdf

    Not necessarily a substitute for a real shop repair manual available cheap on ebay as a CD.
    2002 Odyssey 160K, 1st tranny rebuild at 129K
    '89 Honda Goldwing
    '89 Mercedes 190 2.6L

  14. #808
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    I'm having the exact same problem some posters have described with my '02 slipping out of gear during the 1-2 shift. I have a new 2nd clutch pressure switch (28600-P7Z-003). I plan to put in this weekend. The transmission was recently rebuilt and started having problems within a year. The shop said the switches tested fine, but I don't trust mechanics. The problem seems to happen more often when the van is cold.

    I plan to replace the switch this weekend. I'll report back and let everyone know if that resolves the problem. If it doesn't, I'm going after shift solenoid A next. My wife is fed-up, so if that doesn't do it, anyone have any suggestions for a replacement vehicle?
    Last edited by jase; 11-30-2011 at 08:04 PM.

  15. #809
    786
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    Jase,

    Did you cleanup the shift solenoid A B and C? before replace just clean.


    786

  16. #810
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    Quote Originally Posted by 786 View Post
    Jase,

    Did you cleanup the shift solenoid A B and C? before replace just clean.


    786
    If you're referring to the clutch pressure solenoids, yes. The screens were clean just prior to the transmission failing. In fact, the shop said something caused the torque converter to overheat. I haven't checked them since this latest problem with mis-shifts cropped up. In my experience (from my 2000 Accord), clogged screens cause constant slippage. My van only slipson a downshift to second from higher speeds. At low speeds, it just completely fails to complete the shift, as though it's gone into neutral. I'm guessing something is preventing the clutch from re-engaging. But, I will check the screens again, as a precaution.

    I'd appreciate any suggestions for a replacement vehicle. I love my Odyssey, but If I can't get the transmission issues resolved, It'll have to go. And, I heard the 2005+ models have persistent torque converter issues.

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