Thanks for the question! First, it never hurts to have the problem diagnosed by a certified mechanic. The fact that it’s not shifting at all (vs rough or erratic shifting) typically means it’s a mechanical problem. If it’s a mechanical problem, Trans Tune won’t help.
However, if it is a fluid-related problem, Trans Tune will help clean residues and improve performance.
For what it’s worth, a can of Trans Tune (less than $15) is probably worth a shot for a 2002 with 200k miles. Add a can to the transmission fluid and drive if you can. See what happens – it may help, or it may rule out that the problem is fluid-related.
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Thanks for the question! First, it never hurts to have the problem diagnosed by a certified mechanic. The fact that it’s not shifting at all (vs rough or erratic shifting) typically means it’s a mechanical problem. If it’s a mechanical problem, Trans Tune won’t help.
However, if it is a fluid-related problem, Trans Tune will help clean residues and improve performance.
For what it’s worth, a can of Trans Tune (less than $15) is probably worth a shot for a 2002 with 200k miles. Add a can to the transmission fluid and drive if you can. See what happens – it may help, or it may rule out that the problem is fluid-related.