Friday, July 31, 2015

CHECK ENGINE LIGHT

CHECK ENGINE LIGHT

 VW BASHING

In my humble opinion I think VW manufactures pretty decent cars especially since  several of their models  won car of the year, a few years in a row. In fact VW Polo is probably the least troublesome VAG car and unfortunately the VW Jetta is the most troublesome. However not everyone is impressed with VW and from what goes around  at VW service departments about the flashing check engine light and especially coming from the mouths of VW owners,  borders on disgust and disappointment. Some of the things I've heard them say are:- Volkswagens Suck- and their service departments suck even more. They are an unorganized bunch of monkeys ... VW as a company - customer service is definitely not their priority. The check engine light is how they make money. The Worst customer service I have EVER received.  VW cars need no introduction but they do need constant attention. I will never buy Volkswagen again. As soon as my VW Golf gets out of the shop I'm trading it in for a Hyundai! Volkswagon cars are shit. I'm seriously interested in a "don't buy VW campaign". Never, ever buy a Volkswagen because VW service departments give Toyota cars as loaners. I really loved Jettas before, but now they SUCK. 


Volkswagen do not have an engine number, it an expire date. When I said I drive a VW, the mechanic said "what a shitty vehicle". I don't know how I will sell this disaster of a car! So don't sell it - just trade it in and get a non-VW. The time and effort to fight with corporate Volkswagen will get you no where. Their monkeys do what they are trained to do. Most VWs are lemons and the service people know it. VW quality and service is terrible - I will never buy another VW product.  VW service people are complete fools. Mostly my problems have been with idiot VW repair people, piss poor VW customer service, yep I agree a lot of service departments do suck. VW "wear and tear" - what a load of crap - more like cheaply made, more plastic than metal. The service people at VW are awful to deal with because they know VW sucks. My recent problems with bad service turned to NO service after calling VWoA. Customer service at VW sucks...they are programmed to say: "I'm sorry you are having issues with you vehicle" over and over. 

So, where does this leave avid VW fans like you and me? Do we jump on the VW bashing band wagon or do we take a stand? What I'd like to say in defence of VW, is that since the SAE mandated ODB-II for all makes of vehicles built after 1996  and even supplied a list of generic diagnostic Trouble Codes (DTCs), meaning codes relevant to all cars. Its only a matter of time before all modern day cars start misbehaving and frustrate their owners like some VWs frustrate some of their owners. Little do we know what is happening in the diagnostic and repair, misbehaving and frustration ranks of Honda, Mercedes Benz, Kia, Hyundai,  Opel, Ford, GWM, Renault, Mazda, Alfa Romeo, Bentley, Chrysler, Fiat, Nissan, Jaguar, Lexus, Jeep, Chery, Daewoo, Toyota, Mitsubishi, Peugot, Volvo, Tata, Citroen, Dodge, Proton, Suzuki, Geely, BMW, Isuzu, Porche, etc. Considering most mechanical service departments may not have the necessary electronic savvy diagnostic skilled technical personal, automotive problems are going to be on the rise and more expensive to repair than ever before because unskilled and untrained mechanics are bound to take "like forever" to find the faults by guessing and by trial and error. I personally know of a case where a car  was in for service and repair for 52 days in a single year because the "automotive technicians" could not locate the source of the trouble.

COMMON VW CHECK ENGINE LIGHT PROBLEMS

A typical problem with Jetta / Jetta GLI / Jetta GLI 2.0L T / Jetta LX 5 cyl (2010-2011) / VW  Passat, Beetle, Golf, Tiguan, Routan, Eos, GTI and the VW  Taureg is the Check Engine Light (CEL) aka (MIL-Malfunction Indicator Lamp) that flashes or blinks continually or stays on especially in cold weather which is normally caused by a faulty Check Engine Light sensor. But when the Check Engine Light  (CEL) aka (MIL- Malfunction Indicator Lamp) comes on and the whole car shudders and shakes in an almost uncontrollable manner, not only does it sound expensive but also feels expensive. Check Engine Light  (CEL) aka (MIL-Malfunction Indicator Lamp) is also associated with failure to start, noisy  cranking, backfires, stalling and shaking, rev hesitation, visible black emissions and even engine fires. These issues often flags a P300 (random misfire) which motor mechanics, sorry "automotive technicians" readily pass over as a random glitch, returning the car to the owner saying "no problem found". A glitch that is bound to reoccur whist driving on the inside lane during peak hour traffic, which could consequently leave  the driver stranded on the express way.  This supposedly random error is actually a tell tail sign uttered by one of the ignition coils ( N70, N127, N291, N292) or injectors (N30-N34). A failing Ignition Coil  or a failing Injector gives exactly the same symptoms, upto and including turning on the EPC light (Electronic Power Control), the Check Engine Light (CEL) aka (MIL-Malfunction Indicator Lamp), limits the power and sends the car into limp mode and flags the relevant Diagnostic Trouble Codes (DTCs). Injector DTCs are from P0200 to P0212 and P0261 to P0296. Whereas Ingiton coils DTCs are normally from P02300 to P02335. Unlike older cars that have one coil that could go faulty, which would stop the car in its tracks. Modern day Volkswagen cars, have one ignition coil for each spark plug, implying 4 times the possibility of failure on a 4 cylinder and 6 times  the possibility of failure on a 6 cylinder engine and more ignition coils for the spark plugs per cylinder engines.  If 1 ignition coil or 1 injector fails, the other coils continue to keeps on firing their individual spark plugs. Along with the functioning injectors  keep the engine running but unbalanced due to one cylinder not lagging behind-- because of a dead coil or injector. This shake is so bad that it makes driving the car virtually impossible.  Since, it is very unlikely that 2 coils or 2 injectors would fail at exactly the very same instant, a quick and easy repair method is to keep a new spare coil and injector in the tools box which could be replaced by the process of elimination until the problem is solved.
The other common Check Engine Light  (CEL) aka ( (MIL-Malfunction Indicator Lamp) culprit is the mass air flow (MAF) sensor (G70) which works in conjunction with the Oxygen (O2) sensor to provide the correct volume of air for  stoichiometric calculations.  The MAF is situated between the throttle body and the air filter pan and sends direct predicted air flow data to the ECU, while the oxygen sensor sends feedback data to the ECU so that it can  make the minor corrections to the predicted air mass. Mass Air Flow Sensors (G70) are mechanical devices and therefore prone to failure since their measuring elements tend to get worn overtime, flagging  P1144, P1145 or P1146 DTCs. Mass Air Flow Sensors can possibly cause a wide range of engine problems much like those caused by the ignition coils and injectors. It is therefore essential to download the Diagnostic Trouble code (DTC) memory to determine whether the ignition coils, the injectors or the Mass Air Flow Sensors is causing the problem.

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