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ML320

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Question
Can ur upper control arms be bad if the rubber is cracked
If you suspect that your upper control arm is not bad, it's best to get a second opinion to be sure. When I diagnose vehicles, I am sure to explain my findings to the customer and let them know what...
Question
Had crankshaft sensor replaced, and car is still stalling when slowing down.
Hello, thanks for writing in. If the engine is only stalling when coming to a stop, then it may be a defective crankshaft sensor that was installed or commonly this is caused by a dirty or failing throttle body. I...
Question
Q: Car does not turn on
Hi there. Assuming this is a standard type ignition switch, with the description of events you provided. I am concerned that the tumblers in the lock cylinder may have been damaged, when the half key was turned. The key turning...
Question
Leaking coolant, visible from reservoir. Has crack in reservoir.
Replacing the reservoir and hoses since they are cracked is the first step. The second step is to figure out why the coolant is creating too much pressure in the tank. This may be caused by a variety of reasons...
Question
Car oil needs to be refilled before oil change is due
Hello. If you are losing oil, it is either leaking or being burned. The causes of burning oil would be faulty piston rings that allow the oil to blow by into the combustion chamber or bad valve guide seals that...
Question
Mercedes ml320 2001 only go in reverse we checked the fluid its fine it all of a sudden start doing this with no indication of tra
Hello. When this occurs all of a sudden I would usually start by checking the transmission control module for codes. This would let me know if there are any foreseen electrical issues. If there are no codes then the fluid...
Question
Egrcode multiple cylinders misfire
The most likely issue in this situation is with the EGR valve. Problems with the EGR system can lead to misfires. The exact problem with the EGR will need to be diagnosed with some further testing. The EGR valve itself...
Question
Q: The headlights malfunction
The bulbs are xenon type bulbs and they will fade away before they burn out. My suggestion would be to replace both headlight bulbs. This way you do not change one and the other burns out in a few weeks....
Question
EGG code p0400, multiple cylinder misfire, removed and cleaned egr and pipe with no change
Hi there. The P0400 EGR (exhaust gas recirculation) valve code may not be a valve not working. This code description is a EGR flow malfunction. The fact that your vehicle has multiple cylinder misfires leads me to believe the valve...
Question
My ignition and steering wheel got locked. After getting it unlocked, it wont start. System is saying start then an error shows.
Hi there. If you're having problems with the steering wheel and ignition cylinder being locked and the vehicle is having issues starting, the problem may be with the ignition lock cylinder. Sometimes the components inside the ignition lock cylinder can...
Question
Hi, about how much is it to fix a gas leak from a fuel line.
Billing question sent to CS about repair cost for a fuel leak as fuel is being poured in.
Question
My car won't go over 20 mph. It will start to shake vigorously once it hits 20 mph
Hello. When an issue like this turns up with this many codes I usually start by checking the fuel pressure. If the fuel pump is failing and not creating the right pressure then you will get multiple misfires. If the...
Question
When driving uphill the vehicle looses most of power,only goes 25 miles per hour,then shakes when restarting
Lack of power and shaking can be caused by a number of components. Misfiring can reduce power and cause shakes. Misfires can be ignition related like from bad spark plugs or ignition coils. Also from sensors such as the crankshaft...
Question
How can I be sure i am having a Throttle Position Sensor issue?
Typically a throttle position sensor (TPS) is tested using a multimeter. The specs to compare against are published in the Factory Service Manual. As long as the TPS tests within the range of published values, and does not display intermittent...
Question
1998 Benz ML320 - how to check transmission oil level
Mercedes stopped including dipsticks on their cars when they switched to electronically controlled transmissions. One of the reasons was to discourage the owners from doing just what you are trying to do. The transmission fluid is unique, and adding dexron...
Question
What is cause of yaw sensor malfunction
I'll agree with the shop on this one. The yaw sensor is a very sensitive device designed to measure the sideways force on a car during a turn and it's part of the Vehicle Stabilization System. It has a small...
Question
Q: Check Engine Light is on
Your check engine light may come on for many different reasons such as a faulty mass air flow sensor, a faulty O2 sensor, a bad catalytic converter, bad spark plugs or wires and many other reasons. Unfortunately due to the...
Question
PO400 code came up with multiple cylinder misfires. I replaced the EGR solenoid, all the vacuum lines, cleaned the EGR pipe and passage. Still have the same problem.
Hi there. After having the EGR (engine gas recirculation) valve replaced, the vacuum lines replaced, and the tubes cleaned out, then there could be an electrical issue with the EGR system. Check the EGR harness with a digital meter and...
Question
SUV will not accelerate sporadically and has no power
Hi there: To be completely honest, there could be multiple issues with your 2008 Mercedes-Benz that are causing the symptoms you're describing, ranging from something simple like a crankshaft position sensor to the throttle position sensor or complex issues with...
Question
The engine will not turn over. The battery and fuses are okay.
Hi and thanks for contacting Your Mechanic. Since the problem started when you had replaced the battery, check the wires to the battery and make sure that they are not corroded. Also, check the battery cables for they are on...

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