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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  • Nissan Master
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Steve,

Any Codes?

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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If you remove the throttle body and clean it outside of vehicle it will be much better.
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You can clean this with MAFS safe spray cleaner ( not all throttle body cleaners are MAFS safe, it will say on the can if it is. If it does not say MAFS safe, it is not.

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6d1b588.jpg

This could be gummed up, and slow to open, so the truck opens it too much, causing the rev up, and then closes it too much to make up for it.
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