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Old 06-20-2018, 01:26 PM   #1
cmurraydesigns
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Automatic Transmission

1990 Automatic Transmission with roughly 85,000 miles

My passenger side CV Axle goes out the other day so I replace it. A day later my transmission will rev up and struggle to shift. I need to release the gas peddle let the RPMs go down and it will shift. I have noticed if I don't gas it and drive slowly from 1st-3rd it will shift ok, but anytime I put a little bit into it, RPMs raise quickly and will not want to shift. My Shift/D4 light is NOT blinking. After testing and checking the list below I am still having issues. What are your thoughts?

The things I have tested/checked
  • Jumped blue pin: Checked for codes, but nothing comes up
  • Fuses: No fuses were blown
  • Transmission fluid: The fluid was perfect level, clear red, smelled good
  • TCM: I opened it and noticed resistor R41 burnt. I had R41, R42 and C28 replaced
  • Shift solenoids: working condition
  • Speed sensor: had an extra NEW one so I replaced
  • CV Axle: Wanted to make sure it was all the way in and it was

I thought it would be smart to drain the transmission fluid so I did. When it was draining it was very black and a couple little chunks came out, I tried taking some photos. Do you think I should fill it up with some HONDA transmission fluid and see how it shifts, or do you think the damage it already done? I also have taken out my passenger side CV Axle to make sure it was in correct. I inspected inside the tranny where the CV Axle slides in, looks good to me. Anyone else see anything out of wack there?






Last edited by cmurraydesigns; 06-21-2018 at 06:05 PM.
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Old 07-03-2018, 10:16 PM   #2
fleetw00d
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I'm a little confused, first you indicate the fluid was clear red (I'm assuming on the dipstick), but when you drained it, you say it was black (sure doesn't look good in that photo).

If you only drained and filled it once, you only changed about 42% of the fluid. You would need to drain and refill two more times (with a little driving in between) to have about 80% new fluid. Use Honda fluid. Do you know if you had Honda fluid in it to begin with?
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Old 07-05-2018, 09:22 PM   #3
cmurraydesigns
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Quote:
Originally Posted by fleetw00d View Post
I'm a little confused, first you indicate the fluid was clear red (I'm assuming on the dipstick), but when you drained it, you say it was black (sure doesn't look good in that photo).

If you only drained and filled it once, you only changed about 42% of the fluid. You would need to drain and refill two more times (with a little driving in between) to have about 80% new fluid. Use Honda fluid. Do you know if you had Honda fluid in it to begin with?
Yes clear red fluid on the dipstick, I did drain it 2 times and drove in between, so I believe I got all the old oil out. I did NOT use Honda Transmission oil, as I didn't know that years back, but I did refill with Honda Transmission oil now. It was still slipping so I ended up taking the transmission out and swapping it with an old one I had.
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Old 07-05-2018, 10:16 PM   #4
fleetw00d
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2 drain and refills gets you about 66% new fluid.

The new tranny work OK?
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