Even if it’s not low, having old or discolored transmission fluid can also cause rough shifting or slipping.
If it’s not the fluid, possible culprits for hard shifting include faulty speed sensors, a clogged or leaking vacuum line, or a defective solenoid.
Fixing Rough Transmissions
If it’s a mechanical part (such as a solenoid or sensor) causing the problem, you’ll probably need to go to a mechanic. They can (hopefully) diagnose the problem and replace the faulty part.
If the transmission fluid is the problem, things get a lot easier (and less expensive). All you have to do is add a bottle of Transmission Treatment & Leak Stopper. It’s specially designed to smooth rough shifting. As you might guess from the “leak stopper” part, Tranny Honey stops transmission leaks, so low fluid levels should no longer be a problem. It also cleans moving parts, fights against corrosion, and conditions old transmission fluid so that it works properly. Considering that it costs just a few bucks, and can save you hundreds or even thousands of dollars in future transmission repairs, it’s definitely worth a try.
We know you might not want to be Googling “Tranny Honey,” so here’s a list of places you can buy it.