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3.0 Surging RPMs


aswormboy

New Member
Joined
Oct 26, 2007
Messages
2
Reaction score
0
Points
0
Transmission
Automatic
I have 1993 Ranger 4x4 3.0 auto. When Im driving normally it seems to be slightly down on power and at around 45mph the RPM constantly go up down. Its enough that I can hear it and barely see the tach move. Has anyone seen this before?
 


c1skout

New Member
Joined
Jan 25, 2008
Messages
26
Reaction score
3
Points
3
Location
Cambria Co, PA
Vehicle Year
2004
Make / Model
Edge
Engine Type
4.0 V6
Transmission
Manual
2WD / 4WD
4WD
It could be a vacuum leak, or exhaust, or a fuel filter. Check all the basics first (tune-up) and go from there.
 

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