# Acceleration hesitation on a 99 4 runner

**URL:** <https://community.cartalk.com/t/acceleration-hesitation-on-a-99-4-runner/59351>\
**Category:** Maintenance/Repairs\
**Tags:** toyota, 4runner\
**Created:** [December 31, 2010, 7:48pm UTC](https://community.cartalk.com/t/acceleration-hesitation-on-a-99-4-runner/59351 "2010-12-31T19:48:58Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![dennis\_in\_new\_orlean](https://avatars.discourse-cdn.com/v4/letter/d/a3d4f5/32.png) [@dennis\_in\_new\_orlean](https://community.cartalk.com/u/dennis_in_new_orlean)\
**Post date:** [December 31, 2010, 7:48pm UTC](https://community.cartalk.com/t/acceleration-hesitation-on-a-99-4-runner/59351/1 "2010-12-31T19:48:58Z")

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my 4 runner has a hesitation problem that just showed up one day, i have tried replacing fuel filter’s , fuel pump and fuel pressure regulator( all toyota dealer parts). the only thing that helps ispinching the return fuel line , then it runs like new . can u’all please help me

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**Author:** ![cigroller](https://avatars.discourse-cdn.com/v4/letter/c/c68b51/32.png) [@cigroller](https://community.cartalk.com/u/cigroller)\
**Post date:** [December 31, 2010, 11:48pm UTC](https://community.cartalk.com/t/acceleration-hesitation-on-a-99-4-runner/59351/2 "2010-12-31T23:48:21Z")

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In all of this time & through all of the parts did you actually measure the fuel pressure? Don’t assume that a new fuel pump means everything is well with it.