Quote:
Originally Posted by thegipper
Gipper here, author of said post.
It's a good thing that it shifts manually, that leads me to believe that you may just have a faulty solenoid and not the failure I had.
Do the easy/obvious stuff first, check the level of your fluid and the condition.
I would then drop the pan, replace the filter, inspect/test the solenoids and replace the fluid. There are three tests that need to be done for each solenoid:
1. 12v power to the solenoid checking that it opens and closes
2. Ohm test (should be between 11-15 ohm)
3. Pressure test, solenoid should be able to hold 71 psi of air pressure and not leak
If they fail any of these tests, replace them.
And just to be clear, it is 100% normal for the transmission to not shift from 2nd into 3rd gear until the truck warms up a bit. It is NOT normal for it to not shift out of 1st gear no matter how cold it is, that's what mine was doing.
Bad solenoids won't always throw a code, keep that in mind.
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My girl has a delay shifting into 3rd when she is cold. The first shift into 3rd is also a pretty strong bump (but not a violent jerk). She also makes a semi loud (but not violent sounding) noise when I am slowing to come to a stop. I think it is when she shifts back into 1st.
Is there anyway to test solenoids without dropping the pan? I feel like if I am going to drop the pan I might as well replace all of them if they are not too expensive... A 20 year old solenoid is pretty old I reckon.
