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L4-2.0L Turbo Diesel

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Vibration during acceleration
Hello there, vibrations issues are a common problem with your 2009 Volkswagen Jetta. The most common causes of vibration are wheel and tire balance, engine mounts, misfire condition, control arms, or the struts. A qualified technician such as one from...
EPC light on
Hi there. The EPC light will come on when there is a malfunction with your engine being sensed. Your vehicle will automatically limit the amount of throttle usage to help prevent further damage to your engine. This feature is designed...
AC not working.
Hi! There are many possible solutions to your concern. The system is not working is a little vague as there are electrical and mechanical aspects to the air conditioning system. A bug as simple as a blown fuse or low...
2014 VW Jetta keeps saying No Key even when driving, happens often and dealership can't figure out.
Hi Christina. Thanks for sending in your question today. Intermittent issues like you're describing are incredibly difficult to diagnose. In most cases, it's a minor programming glitch with either the key itself or the ECU/Security system. If the dealership is...
What does electrical exhaust pressure valve do and code says it's permanent
From the information I can gather on this trouble code, it looks like it is more of a general information code. There is a diagnostic flow chart that needs to be followed to identify if it is a problem with...
Hello . When passenger airbag sign is off , does it mean that all the airbags are off or only the passengers airbags ? Thank you
If there are no warning lights on when the engine is running, all of the airbags are active. That is the default mode. About twelve years ago the DMV required that the driver be given control of whether the passenger...
Engine will not start and there is a no start fault code p2294.
Hi there. The code P2294 (https://www.yourmechanic.com/article/p2294-obd-ii-trouble-code-fuel-pressure-regulator-2-control-circuit-open-by-evan-clay) is for the fuel pressure regulator. Check the fuel pressure regulator for power to it and power out. Check the fuel pressure on the rail to ensure that the fuel pump is working properly....
P0234 code
Trouble code P0234 indicates the powertrain control module (PCM) senses a dangerously high boost pressure from the engine's forced induction system. Levels of boost in excess of recommended levels can compromise the structural integrity of the engine. If you need...
Check engine light/emissions workshop! blowing black smoke while accelarating, among other acceleration issues.
Hello. Black smoke is usually the result of an excessively rich condition. The black smoke is a result of excessive fuel from a rich condition that was not burned in the combustion chamber, burning up afterwards, in the exhaust pipe,...
Engine has no power
It sounds like the high pressure injection pump has gone out. When this happens, tiny metal particles contaminate the fuel rail and clog the injectors. The fuel pump will have to be replaced (https://www.yourmechanic.com/services/fuel-pump-replacement) and the lines and injectors will need...
Starting Issue
Although you've replaced the battery, it should still be tested. The battery is the heart of the starting and charging systems. However, with a known good battery, suspect the starter or fuel delivery next. A certified mechanic, such as one...
Engine shutting down.
Thank you for your inquiry. There are different options to take into consideration with diagnosing this issue. A restriction in the fuel delivery system is a likely cause. The fuel builds too slowly, enough to start the vehicle, but not...
Extremely loose steering - screetching when parking and humming when full turn.
You have a newer type "electro-mechanical" type steering system. Noise is typically a sign of failure so obviously there is something wrong in the steering system. If there is abnormal, marked noise in the steering system, a mechanic would simply...
Can't find where my fuel pump relay is on car
Hi there. This video is actually pretty good to show you how to self diagnose this type of problem that is common with TDI's (https://www.youtube.com/watch?v=ibgVDxyVPYk). I would recommend watching this video first, and if this doesn't resolve your problem -...
My engine management light is on all the time and so are my engine fans.
Hello. The engine fan coming on and the temperature gauge spontaneous movement is more than likely caused by the same issue. It is possibly a wiring issue with your coolant temperature sensors. A technician will have to check the wiring...
car is barely picking up speed from stationary position to 3rd gear
Hi there. Check the turbo on the engine. With the loss of power until the vehicle is driven normally after 100 meters and the lack of power going up steep hills, the turbo could have failed causing the engine to...
Input turbine sensor location? Forgot to change transmission fluid at 80000. Should I change transmisión fluid first?
This is a generic code for the input speed sensor located on your transmission. This code may be triggered for many reasons such as a defective input speed sensor, a faulty output speed sensor, a damaged, worn, or broken reluctor...
Sometimes my car accelerates very slowly but the RPM rises
Hello. I would recommend first checking the connections to the MAF sensor (https://www.yourmechanic.com/services/mass-airflow-sensor-replacement) and cleaning it as sometimes they will get dirty and cause this kind of problem. If this does not work you may need to have it replaced....
I went through a car wash with my diesel fuel cap open. I had just filled up. What do I do
Hello. If you are afraid that water or moisture has possibly found its way into your fuel tank, then I would consider draining and refilling the tank. Your vehicle should be equipped with a fuel filter that can catch some...
Headlights and taillights not working properly
Hi, is there any more information you can give us? Are the lights not coming on at all? Do they flicker in brightness? If the lights aren't working at all, I would check the fuses to make sure they are...

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