Question about 2010 Nissan Frontier

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2010 nissan with 4.0 eng. surges and rpms jump around when eng. is warm.

Ran injector cleaner through fuel system, changed throttle body with identical vehicle with no problem. checked air filter, changed fuel filter and pump, changed spark plugs.

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Check for vacuum leaks with a can of carb cleaner engine running - when engine race up or bogs down there is a leak. Spray all around intake, vacuum hoses, brake booster, and throttle body.

Master Tech Lee

Posted on Dec 07, 2014


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