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ML320

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Question
wont start
It sounds to me like you could have an issue with your ignition switch. I would recommend having your ignition switch tested by a qualfied professional to determine if it is working properly. The ignition switch is what causes your...
Question
Leak
Hi there. The problem with stripping a coolant line is that although it might appear to be tight, as it heats, it will most likely expand and create a leak. If you are using the same coolant line inserted into...
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
Radio plug cut
Hello there, a cut plug for the radio of your 2001 Mercedes ML320 is a large problem. The radio plugs are most often cut when an aftermarket radio and speakers are installed. With wiring that has been damaged or cut...
Question
My power steering is malfunctioning
Hello, thank you for writing in. The vehicle may need a series of tests at this point. With no diagnostic codes to assist us in diagnostics, the power steering system components will need to be tested individually. When you refer...
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
Crank sensor was replaced and car still stalling 2002 Mercedes ML320
Hello - if replacing the crankshaft position sensor (CPS) recently was done in response to a "stalling when slowing down problem", I would have a diagnostic check done first before performing other maintenance. Replacing the CPS could have been an...
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
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...
Question
Engine has a very small surge
Claimed by Jeff Engstrom
Question
my ml 320 has some noise along the serpentine belt passing thru pulleys my OBD 2 diagnises code P0221 which is for Throttle pedal
These problems are not related. But both problems are quite common on your model car. Your P0221 code refers to the throttle position sensor; a sensor that detects the amount that the throttle itself is open. You might not notice...
Question
Overheat
Be sure not to drive the car if it is overheating because overheating can warp the cylinder head and/or engine block causing costly damage. The most common causes of overheating include low coolant level, a faulty thermostat, a plugged radiator,...
Question
Battery light
Hello, The battery light indicates you likely have a dead battery as a result of leaving the lights on. The yellow fluid light is your oil light simply indicating there is no oil pressure, which is normal for the car...
Question
Hi. The battery was already drained from the alarm while key battery was going dead. The ignition was accidentally left on for 4 h
Hi Carla. Before a vehicle starts, all electrical components receive their power from the vehicles battery. Although the battery can appear to be drained, to discontinue powering the alarm, it can still supply some power to the ignition system. It...
Question
Good evening from Ghana in west Africa, please help me with this,i want to the location of vehicle output speed sensor on benz ml3
Hello, thank you for writing in. An output speed sensor on your vehicle would likely trigger a P0720 engine code. If this sounds like the correct sensor, then you are looking at the speed sensor located on the transmission's electrical...

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