Low power in acceleration

2002 NISSAN SUNNY
100,000 MILES • 4 CYL • 2WD • AUTOMATIC
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AKSII
  • MEMBER
  • 1 POST
Did a full service but still having problem with acceleration. It takes time to pick up speed. When climbing small hills, it loses power and slows down.
Dec 3, 2018 at 4:34 PM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
Hi and thanks for using 2CarPros.

There are many things that can cause a power loss. The first things I always question is if the catalytic converters are partially plugged or if fuel pressure is low. That is where I would start. Here are links that show how to check both:

https://www.2carpros.com/articles/bad-catalytic-converter-symptoms

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

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Here is a link that discusses low power issues with additional causes.

https://www.2carpros.com/articles/engine-has-low-power-output

Let me know if any of this helps or if you have other questions.

Joe
Dec 3, 2018 at 6:18 PM
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