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Showing posts from September, 2019

Know your car

How to solve code P0015 and P0017 (Toyota or Lexus) of vehicles having rough idling and hard acceleration

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When your Toyota or Lexus cars have just started idling rough or not accelerating easily the way it used to be, you plugged in a scanner and found out the codes P0015 P0017 (both current), as shown below. when this happens, the engine-valve timing is altered.  P0015   P0017 how can engine-valve timing be altered even when no body loosed the engine? Most of the new model vehicle are equipped with variable valve timing inlet (VVTi) camshafts, which help adjust the valve timing of the vehicle when operating on certain loads, to help boost the engine performance at that particular instance. then readjust the timing to the normal point on average working conditions.  But when an ECU commanded the VVTi cam gear to return to the normal point and it's not working, this'll prompt the computer to throw the code P0015 or P0017 or both accuring at the same time, with the check engine showing on the dashboard. When the cam gear failed to return to the normal point after adjustment, this'

Why your car(s) smoke black?

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If your car(s) have this  problem of black smoke and you buy fuel more than usual, then there is something wrong with it. Incomplete combustion, in other words, fuel delivered to the combustion chamber, being more than oxygen supply and not burnt completely will cause black smoke of an  engine, prompting check engine light to illuminate and a rotten egg smell is also perceived. This error is caused by a lambda (oxygen) sensor. Although many variables may contribute, the discussion is on lambda sensor. What is the work of a lambda sensor? Lambda sensor serves as the nose of a PCM (power control Module), it tells the system's computer how much oxygen is available, by sniffing, then the pcm will now determine the air/fuel ratio to use for a stoichiometric combustion.   If the sensor sniffs more oxygen, it will send signal to pcm  and equivalent fuel will be supplied to ensure a complete burning. What does complete burning mean in an engine? A complete burning or combu