Should I Replace my Automatic Trans Valve Body?
My 1994 Saturn SL automatic has over 300,000 miles and Its a fact it's been 7 years at the bare minimum since the fluid was changed in the transmision. The fluid is black and bubbly for years now as far back as when I first checked it when it was not mine. I honestly would assume its been over 10 years, 210,000 miles since a fluid change. My Saturn has the reverse issue where it slams into reverse after working the gas pedal to get it to shift. I want to replace the valve body and fluid but there's that risk of damage from replacing the fluid of an automatic transmission that's been neglected. Would it be a safe thing to replace the valve body and fluid without any harm?
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I don't know enough about transmissions to give you an honest answer. I did that with a frigging Mitsubishi I had a couple of years ago and the damn thing never shifted right afterward. I even changed the valve body twice, but that didn't help. I think the new fluid just finished off bad clutch paks. I should have left it alone. Finally sold it for scrap price.
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Then I will just wait until I do a complete transmission rebuild.
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Alpha has mentioned that if you have a neglected tranny , don't change the fluid
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I already knew that one. Was just unsure if the harm of it was with the valve body, the gears, or both. Now I know it's both, so I will just wait until I have the chance to rebuild.
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It might not be a bad valve body, just a bad shift solenoid.
My daughters 2001 started to do the hard shifting into reverse and I swapped around 2 solenoids and it worked just fine after that. |
The thing is I cannot do anything that would require more fluid to be added to the transmission because it runs the risk of damaging a neglected trans.
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only drive 5 spds.
Guys that have done this (opened up valve bodies) ----how much fluid did you lose/have to replenish when done? |
Don't worry about the tranny until you see if the engine needs to be rebuilt.
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Already know that the trans comes after an engine overhaul.
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Originally Posted by derf
(Post 50564)
only drive 5 spds.
Guys that have done this (opened up valve bodies) ----how much fluid did you lose/have to replenish when done? |
As mentioned in another post, all major repairs will be cancelled on my Saturn. The goal is to keep it running, I will be buying an identical Saturn that will get the extreme work. That includes rebuild the engine and trans.
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