No power and poor gas mileage

2004 NISSAN MICRA
100,000 MILES • 1.2L • 2WD • MANUAL
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GAVINCLYNE
  • MEMBER
  • 1 POST
I have had engine light on and rough car idle for a while now and changed throttle body. It stopped the misfire but would not start now. So I changed crankshaft sensor and now it had a long crank and very little power and high fuel usage.

I have changed the spark plugs, ignition coils, camshaft sensor, o2 sensors and throttle body. Do not know what this could be? My vehicle is a K12 model.

Sep 16, 2018 at 2:00 PM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
Hi and thanks for using 2CarPros.com.

First, this vehicle is not sold in the US, so my information is very limited. However, what you are describing sounds like a plugged catalytic converter. Take a look through these links. It describes the symptoms, how to check a converter, and in general, how to replace one.

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/catalytic-converter-replacement

I hope this helps. Let me know if you have other questions.

Take care,
Joe
Sep 17, 2018 at 5:25 PM
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