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

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What are the best Dodge repair shops?

RepairPal Certified shops can diagnose and repair your 1997 Dodge Ram 1500. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

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What is your question?

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

What is your question?

RAMMER97 in Maple Grove MN

Mar 24, 2013

1 Reply

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big bradon Mar 24, 2013

possible crank sensor ,input or output speed sensor

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Popular Answer

What are the best Dodge repair shops?

RepairPal Certified shops can diagnose and repair your 1997 Dodge Ram 1500. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.