Help p0300 ...please help :/

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Sep 24, 2018 | 06:11 AM

boweld

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p0300 ...please help :/

hello, with me it is like that: after starting the car, everything seems to be ok. When increasing the idle speed also. The problem starts when I go drive. around 3000-5000 rpm then. min the "check engine" lamp lights up and blinks. Feel that the car misfire and finally goes into emergency mode. In emergency mode the ignition does not fall out (oddly), but rpm goes only to 3500.
Replaced:
-at catalysts
-4 lambda probe
- evap filter (leak was)

I am slowly running out of ideas ... please help

Sep 24, 2018 | 06:40 PM

slartibartfast

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From: Houston, Tx

https://www.engine-light-help.com/P0...ine-light.html

Have you used a code reader? You should get more than just the generic P300. You're wasting money of you don't use the code reader to get the specific cylinder causing the code. It could be a bad plug, bad coil, dirty injector, etc. Any auto parts store will read the code(s) for you.