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Showing posts with the label Car diagnosis

What you need to know about your car Knock Sensor

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 Don't ruin your car engine.  Trial and error sucks Know sensor  Knock sensor  Knock sensor  Circuit Description  A flat type knock sensor (non–resonant type) has the structure that can detect vibration in a wider band of the frequency from about 6 kHz to 15 kHz and has the following features. Knock sensors are fitted on the cylinder block to detect engine knocking. The knock sensor contains a piezoelectric element which generates voltage when it becomes deformed. The generation of the voltage occurs when the cylinder block vibrates due to the knocking. If the engine knocking occurs, in order to suppress it, the ignition timing is retarded. MONITOR DESCRIPTION The knock sensor, located on the cylinder block, detects spark knocks. When the spark knocks occur, the sensor picks–up vibrates in a specific frequency range.  When the ECM detects the voltage in this frequency range, it retards the ignition timing to suppress the spark knock. The ECM also sense...

P0116-Engine coolant temperature circuit range/performance in Toyota Vehicles

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Engine coolant temperature sensor helps: In sensing engine coolant temperature and overall engine temperature it helps the ECU/PCM to properly control the fuel injector pulse rate, especially at colder temperature to improve engine performance and avoid stalling  improving drivability, at colder engine temperature it helps in maintaining optimum fuel economy SYMPTOMS OF P0116 IN TOYOTA  Check engine light on hard acceleration, especially at colder engine temperature excessive fuel consumption intermittent engine misfiring - at times everything seems alright, next minute you'll feel difficulty in revving the engine, with shooting sound. You'll have to press hard on the throttle pedal before the engine can move. at times you'll resolve the exhaust is restricted, at other times, the symptom will be that of a bad fuel pump. at times you'll count a misfire from number 1 cylinder. BUT WHEN YOU HAVE ALL THIS SYMPTOMS AND NO DTCs, it's likely that you have a bad fuel pum...

Why you need your own car scanner as a car owner

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As a car owner, you need at least a basic auto diagnostic tool to help you have the first hand knowledge of your vehicle, even before you call a mechanic.  When an original diagnostic tool detected a fault on your vehicle, it will suggest some ways and steps you will take to fix that problem.  If you're connected to Internet, it'll link you to video tutorials of how that particular problem is being solved. What does this means to you? You reduced your repair cost,  when you have the first-hand knowledge of your vehicle, your calling a mechanic is to just tell him what he'll help you do, already, there's no need for further diagnosis,  he/she will hardly lie to you as a means of extorting  some extra money from you  You'll hasten the work as you're going straight to where the fault is, there'll be no need for trial and error. When you earlier diagnose an early check engine light,  it'll  be easier for you to solve it, preventing the faults from esc...

how to solve code p0016 of 2005 Toyota Corolla

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 P0016 is a Toyota malfunctions DTC , that means  the readings of the camshaft position sensor does not correlate with that of the crankshaft position sensor.  crankshaft position sensor cam position sensor Causes of P0016 trouble Code  if you don't change engine oil and filter in time   N ot using the recommended engine oil for the engine    Faulty camshaft position sensor     Wrong engine timing Symptoms of P0016 trouble code        intermittent loss of power         hard starting         hard acceleration         engine overheating           engine vibration when idling with air condition working Different ways to resolve the P0016 trouble code      change engine oil and oil filter, with the recommended oil for your engine         clean   VVTi oil...

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, th...

How to solve code P0335 Hyundai Elantra 2013-2015

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Hyundai 2013 model  When the crankshaft position sensor of Hyundai vehicle is failing the ECU always displays code P0335 on its DTC.   Sometimes, this code can be displayed even if the sensor is not faulty, due to the reasons below: ·         When the battery is low and enough voltage is not reaching the sensor Dreamland Motor's ·          When the timing plate is bent or cracked ·          When the timing of the engine is not correct Until the above conditions are met, replacing the sensor might not solve the problem. It’s very important to cross check all the works you did on the engine, or to refer to repair history of the vehicle before going ahead to replace the sensor to avoid wasting money replacing parts that are not faulty. Request a call from a mechanic, by filling a form here , if you have any problem with your hyundai vehicle. you'll only pay after ser...

How do I get the check engine light to go off?

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How to Reset a Check Engine Light Check engine lights go on when there is a problem in the engine or the emissions control system. You should always have the codes generated by your car's computer scanned and read so you can determine the cause. You can reset the light once you have fixed the problem. This article will tell you how to reset the check engine light in your vehicle. Method One of Two: Use a Code Scanner 1 Connect the scanner to the on-board diagnostic connector (OBD-II) under your steering column.  Turn your ignition switch to "On." Turn off all accessories. 2 Press the "Read" button on your scan tool to view the engine's error codes. Write down the code or codes in the order they were received for future reference and repairs if necessary. 3 Press the "Erase" button on your scanner to clear the error code. Clearing any codes present will turn off your check engine light. Some scanners ...