Routine Maintenance, Shift Solenoids.
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MM Gruppe B
Joined: Feb 2009
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From: 94577/Gaillimh
Routine Maintenance, Shift Solenoids.
Pulled the shift solenoids on the replacement MPJA(ody) trans in the '95 EX, it's been about 50K miles since its install. I had checked the screens before and tested the solenoids via direct actuation with voltage(click test) and measuring resistance of the coils. However, as of late the shift events have seemed to bet getting a bit more on the Cadillac slush box side. After removing the screens, which had a bit of junk on them, I manually exercised them. Surprisingly the solenoids felt stiff and a bit crunchy, similar to an EGR valve that works but may have a bit of soot on its shaft. After actuating the valves by hand a few times the crunchy-ness of the solenoid turned into a smooth event.
Upon re-installation and a test drive shifting was much more precise and instant. Prior to this the shifting felt a bit lazy and lockup was not noticeable. More of a blending of gears. Prior to this cleaning, if I closed the throttle quickly above 30MPH 4th gear upshift would cause a bit of a thump and click from the left side engine mount as there was a bit of a delay. Now it is a quick and smooth upshift.
There was a light layer of friction material inside the valves. Notably the port that the pintle valve seals had a decent amount, not so much as to block the port, I would suspect it did cause a slight shift delay due to reduced volume.
Tools of choice, outside of a 10mm and pick to carefully remove the screens, Q-Tip and scissors. Used the cotton ball to swab down the port areas, and with the scissors, remove the cotton ball and use the stick to clear out the port and exercise the valve manually.
Upon re-installation and a test drive shifting was much more precise and instant. Prior to this the shifting felt a bit lazy and lockup was not noticeable. More of a blending of gears. Prior to this cleaning, if I closed the throttle quickly above 30MPH 4th gear upshift would cause a bit of a thump and click from the left side engine mount as there was a bit of a delay. Now it is a quick and smooth upshift.
There was a light layer of friction material inside the valves. Notably the port that the pintle valve seals had a decent amount, not so much as to block the port, I would suspect it did cause a slight shift delay due to reduced volume.
Tools of choice, outside of a 10mm and pick to carefully remove the screens, Q-Tip and scissors. Used the cotton ball to swab down the port areas, and with the scissors, remove the cotton ball and use the stick to clear out the port and exercise the valve manually.
Honda-Tech Member
Joined: Aug 2004
Posts: 443
Likes: 1
From: Wickidy Wickidy Wack, PA, usa
Re: Routine Maintenance, Shift Solenoids.
Because I own a 2000 Honda Odyssey, I know exactly what you are talking about. I did a drain and 3 quart fill on a "seemingly strong" transmission 3 days later the transmission went to **** and "needed to be replaced."
I cleaned the solenoid and screens and was able to get another 25k out of that transmission... I babied that tranny but got another year & a half out of it when I shouldn't have gotten anything else out of it.
This is the thread I followed: http://www.odyclub.com/forums/24-199...cause-fix.html
I cleaned the solenoid and screens and was able to get another 25k out of that transmission... I babied that tranny but got another year & a half out of it when I shouldn't have gotten anything else out of it.
This is the thread I followed: http://www.odyclub.com/forums/24-199...cause-fix.html
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