what causes 5.9 dodge ram tach to jump 250/500rpms

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at seventy mph the tach will jump and some hesitastion will happen, i've changed fuel pump, rotor, distributor cap, plug wires, plugs were changed about 2,000 miles ago. no codes, no check engine lite.

RAMMER97 in Maple Grove MN

Mar 24, 2013

1 Reply

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Open

Closes 3:00 PM

Call