rpm jumps up while driving
while driving, the rpm jumps up for no reason . I can hear the engine rev up, and then it goes right back down. Don't feel any jerk, but it sort of sounds like you put it in neutral and back in drive. Any ideas?? Very annoying.
if it does it at ur shift points ur trany is probly slipping
what year truck is it, if is a 06 or newer with a hemi and the rpm's raise 200 to 300 rpm's and goes back down then that is your mds system and it is normal.
Test you throttle position sensor
My truck does the same thing with he 4.7 magnum. I got a new iac valve and map still does the same thing.
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