1993 GC RPM problem

[shooter]

My RPM's keep fluctuating from 2000 to 2500 at highway speeds. It feels like it's dropping down a gear, which would cause the RPM's to raise, then the RMP falls back down, as if the car shifts back into a higher gear. I got a tune up and fluids changed but it didn't solve the problem. Maybe it's the vacums, but I'm not sure. If anyone has any suggestions I would really appreciate it, thanks.

[driede]

Originally Posted by shooter

My RPM's keep fluctuating from 2000 to 2500 at highway speeds. It feels like it's dropping down a gear, which would cause the RPM's to raise, then the RMP falls back down, as if the car shifts back into a higher gear. I got a tune up and fluids changed but it didn't solve the problem. Maybe it's the vacums, but I'm not sure. If anyone has any suggestions I would really appreciate it, thanks.

[color=palegreen][font=arial black]I

[chris5.2]

I use to have a similar problem in an older car , check your transmision oil level .

[shooter]

I did have the transmission fluid flushed, but I'll take a look at the oil levels, thanks.