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Related questions

Question
Soft brake pedal after replacing rear brakes and master cylinder 2003 Audi A4
Hello. If you have no pressure to the rear calipers at all and if the master cylinder is new then you may have forces some debris into the ABS unit when you compressed the pistons in the rear calipers. In...
Question
Q: Car shaking
Vibration at idle is due to either failed motor/transmission mounts or an engine operating condition that causes a rough idle. If you are getting vibration through the steering wheel at speed, the most common cause is a wheel/tire imbalance although...
Question
Car acting strange
Hi there. When you feel vibrations in multiple driving conditions, it's typically an indication of worn out motor mounts or a vacuum leak somewhere in the engine compartment. The best way to have this issue correctly diagnosed is to have...
Question
EPC light on and started losing power as well as taking longer to start the car. now the car wont start
Hi There, The EPC light is typically related to the ECM (computer) not receiving the proper signal from the crankshaft position sensor. A crankshaft position sensor is an electronic device used to monitor the position or rotational speed of the...
Question
My Audi A4 has a bad transmission range sensor and when accelerating the car shakes, I don't know if it's the sensor?
A faulty transmission range selector switch/sensor could have some negative effects on vehicle performance and consequently the switch should be replaced prior to a diagnostic for the acceleration problem you are describing. After the sensor/switch is replaced, if the acceleration...
Question
fuel mixture is lean. must be adjusted
I'm guessing that you are getting a P0171 code or something similar. Yes, its telling you that the engine is running too lean, but there is not an adjustment that you can make. When this happens it is because of...
Question
Q: Car smoking
If your car will not hold coolant, you will need to solve that before anything else. I'm not clear about the other issues, but it seems the coolant leak is the central problem. It may be a simple as a...
Question
my audi a4 2004 brake lights are on and speedometer not moving intermittently
Your ABS brake system and speedometer require a good clean signal from wheel or transmission speed sensors. Since you have ABS and brake lights on means the computer has detected a fault in one of these sensors or system. You...
Question
Hi, Could use a lot of help. I have a 2006 Audi A4, recently purchased. Just recently the PRNDS lights are flashing, had it tested
Hello, thank you for writing in. The vehicle is likely having an issue with the TCM, or transmission control module. The issues you are having are classic of a TCM failure, and the issues will get worse. Unfortunately, there are...
Question
Hi Mark I have an audi a4 2005 1.8 quattro AC seems to cut out in real hot tempratures also the transmission goes into limp mode
A possibility with the A/C system is a fault in the evaporator that causes internal and/or external icing. The resulting high head pressure causes the control circuitry to "throttle" the compressor, hence the ECON mode. Check for a blocked air...
Question
Coolant is brown
The coolant level should be checked when the engine is cold. Typically you will check the level in the plastic recovery tank. If the level is low, or keeps dropping even after you top off the system, you might have...
Question
ABS light, traction control light and handbrake light blink at the same time and the car jerks
It is not clear from your description if the noise you are hearing is primarily engine versus chassis (suspension, etc.) related. The origin of the noise can be pinpointed though if you request a vehicle noise diagnostic. That the ABS...
Question
Does my 2007 Audi A4 Cabriolet have or support CANBUS for steering wheel control of an after market navigation system?
Unfortunately, YourMechanic does not diagnose problems with, repair, or install aftermarket sound systems. I would recommend reaching out to the products manufacturer to determine if it is compatible with your vehicle.
Question
I’m seeing and smelling smoke and my traction control light is on.. is this a common problem? Also my ABS light blinks on occasion
Smoke from under the hood will be oil or coolant leaks. If I had to guess, I'd say you probably have some oil leaks that are getting oil on the exhaust manifold which burns when it hits the hot surface....
Question
Check engine code 0089 audi a4
Code P2181 is a general diagnostic code that simply refers to the engine operating temperature being higher or lower than a specified threshold. This may happen for a number of reasons. A technician will need to first determine if the...
Question
Q: Car won't start
Hi Jessica. Thanks for contacting us today. With turbo-charged four-cylinder engines, diagnosing a starting issue can be more complex than the traditional "getting fuel / getting spark" process. In some case, a faulty or worn out wastegate or other turbo...
Question
Q: Scraping noise
Sometimes its easy to get the hardware in a little crooked when changing brake pads, that or a backing plate might have gotten bent. Take the car back to the guy who did your brakes, they should be happy to...
Question
Major coolant leak when aircon is turned on
Hi Mel. Thanks for contacting us today. Generally speaking, the operation of the AC system should not create a coolant leak to occur, as coolant does not flow through the AC unit in any capacity. However, an engine will "work...
Question
Coolant leak on 2005 Audi A4 2.0L petrol but no engine overheating
You will need to have the cooling system pressure tested to locate the leak. You may have a water pump leaking or a hose that is leaking.
Question
Coolant leak in rear of engine
You would need to have the leak better identified as to why it is leaking so a mechanic or you can replace the bad part or gasket. If you can supply a picture of component leaking then I can better...

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