Why does my transmission slip at high RPM?
Why does my transmission slip at high RPM? A manual transmission and an automatic transmission have the same reasons as to why it is experiencing slipping and high engine revs. A few of those reasons include the clutch being worn out or wearing out, or a clogged transmission filter. The transmission fluid can be to blame, too. Why are my RPMs running high when I start to drive? I can't be very specific but in general, this symptom usually points to a problem with the transmission, or if you have a straight shift, it probably means the clutch is slipping....