This led me to measure the battery voltage: 13. The car is 03 with 97,000 and ran perfectly till starting one morning when the tensioner could do no more as the cam tried to push down the valve at cranking speed. Clearing the code with the engine above idle and it stayed clear. The heat generated by the hot film is reduced as the intake air flows around it. The car is not driven much and the time between the last oil change was over 1 year. Oil and filter , overhead cylinder , timing chain, both camshaft gear changed, still I have the same problem. I guess that one was just the engine management being confused by the bad signal from the exhaust cam position sensor.
Also as you pass through these wiring harnesses, check each ground to make sure corrosion or rust. What are the common causes of code P0020? The interdependent mechanic has told her to go to merc, Now she lives in england so i cant look at it but she is afraid it will cost her a bomb at merc so any help would be great i had a google search but couldnt find anything, even if someone knew the engine and knew what the cam adjuster is or where it is on this engine? Change the solenoid come back nice. Fortunately, everything you need everything you need to fix it right the first time is right here! P0020 refers to the intake camshaft on bank 2 cylinder head of a multiple cylinder head engine. YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Alternator has decent brushes and maintains 14.
The replacement sensor did the opposite, no code at idle, bring the revs up and the code comes with it. Otherwise you will need factory that will teach you and guide you through the diagnostic phase. However, replacing it didn't fix the problem until I finally 'scoped the new sensor to find the output was permanently high. The more air, the greater the heat loss. It measures the intake flow rate by measuring a part of the entire intake flow.
P0102 Mercedes-benz Description The Mass Air Flow sensor is placed in the stream of intake air. What are the symptoms of code P0020? I have a 2004 Audi S4 Cabriolet B6 4. Timing for the inlet appeared spot on, but the exhaust cam was off slightly. Is it programmed to back off the charge rate if rapid acceleration is called for? This system is not to be confused with Camtronic, which physically shifts a camshaft with multiple cam profiles along a splined shaft to alter lift and duration, in addition to timing. These chains need treating like cam belt engines and changing at a whim as there is no prior warning. If you have please see the appropriate article as these should be considered more of mechanical failure codes The symptoms of course are the Check Engine Light illuminated , low power, possibly rough running , hard starting, poor idling or even stalling.
It does not set at idle, just in the 2-3k rev range normally. Start your diagnostics with a proper , to ascertain what condition the vehicle is in. I guess that one was just the engine management being confused by the bad signal from the exhaust cam position sensor. The control plunger has a raised sealed ridges, and grooves that are pressurized with oil. Position B refers to the cam exhaust and Bank 1 refers to which side of the engine it is.
If nothing happens, try on a different sensor. How does a mechanic diagnose the P0020 code? Keep in mind that solenoids can and do fail electrically, but you should check for possible causes of failure like over voltage supply. I had the new cam magnet installed in 20 minutes and now my check engine light is gone. The detects the air flow by means of this current change. The voltage regulator also contains fault detection circuitry. Thus the owner gets the best of both worlds, great performance, good fuel economy and an acceptable idle.
The temperature of the hot film is controlled by the a certain amount. You may have to replace it again…under warranty! That causes all sorts of issues depending on how far it gets. Do you think could be about alternator failure? Since the V6 engine has two cylinder banks, you will have two of these bad boys on each side, making four in total, and four corresponding cam position sensors. Im really a bit desperate. Any help would be greatly appreciated! We have observed vehicle wiring damage from an engine replacement not show up until a year later. There are no one from Merc resolving or trying to better their hardware. I then started getting the P0365 and P0366 errors again, those relate to circuit and performance of the exhaust camshaft position sensor.
Or aftermarket data systems such as , and others. I was able to verify the returns pin 2 of both cam magnets are connected together as the circuit diagram shows, so either they're both okay or neither connect back to 'circuit 87M2e connector sleeve'. The code could also be set as the result of a performance failure in the system. Swap the camshaft magnets from side to side and see if the trouble code changes. The code may be accompanied with code P0021 or P0022.
Gone full circle on this one and now solved it. Bright at idle, dimming slightly as I increased the revs and bright again with the revs at steady state. There is a code for each camshaft and whether or not the timing is reading too advanced or too retarded. The camshaft adjuster magnet on all of these are found on the front of the engine facing the radiator and are relatively easy to access. I've just one other thread on the forum so far and that's about the timing chain. We have an E class 2003 1. It consists of a hot film that is supplied with electric current from the Engine Control Module.