Popular questions

If you have confirmed correct fuel pressure when you changed the fuel pressure regulator, I would next check the engine coolant temperature sensor for the fuel injection system. That sensor, if failing, is generating a false "cold" reading, causing the...

You most likely have a fuel filler nozzle that has an outer hose with an outer hose in it. If the inner hose comes off of its mounting at the inlet of nozzle then it will restrict the fuel trying...

Hi there. From the description you have provided, leads me to believe the slow and no crank may be, a battery and/or battery connection issue. It could also be, a faulty starter relay or starter concern. Proper diagnoses should be...

The excessive fuel condition is from the exhaust regeneration system malfunctioning and should be diagnosed following updated diagnostic procedures for the check engine codes received. Follow technical service bulletin 09-10-02 for an updated procedures directive.

Unfortunately, the cause of your concern cannot be determined without visual inspection and further testing. While it is possible that your throttle position sensor may be faulty, it is more than likely that it could be a wheel speed sensor...

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...

Thanks for writing in about your Mercedes Benz CLK430. This is a common problem as vehicles get older. This type of fault is called a parasitic draw and occurs when one or more component does not shut off when the...

Hi there. Assuming you correctly gaped the spark plugs as recommended by the manufacturer, and installed the plug wires correctly, it's likely that this is due to an electrical relay that may have been damaged (especially if you did not...

Hello - yes, low oil pressure and high miles can certainly product a metallic clattering from the timing chain set, as well as knocking noises from worn connecting rod bearings and crankshaft main bearings. If you are getting low oil...

You should either visit your local parts store to purchase the oil and filter for your vehicle or have a mechanic like one from YourMechanic come and perform the service for you. The engine will use 0w20 oil and filter...

You will need to have the computer tested to find out what codes are stored in memory and then have those codes tested to find out why the check engine light and EPC light is on. A mechanic like one...

In most of these cases it is necessary to hear the type of engine strain you are describing to make a more accurate assessment. But based on your symptom that once the vehicle runs fine after it sits, this indicates...

This may be difficult to diagnose without knowing which fuses were moved around. There are a number of fuses that could cause the car to not start if removed or switched. There is a battery power fuse (30 Amp), an...

Hi John. Thanks for contacting us today. Oil in front of the motor, near the crankshaft pulley, is often from the front crankshaft seal. Although this is not normal, it is common with an engine 20 years old. I'm not...

Without being able to hear the noise, it will be hard to make an accurate recommendation. If the noise is a rotational noise that changes intensity based on road speed then looking at tire wear patterns such as a cupping...

The vehicles suspension system is made up of many components and to keep noise down. Many of them use rubber bushings. The soft rubber bushings do eventually wear out and may cause some misalignment. This may explain the noise while...

If you have a valve cover leaking oil onto the spark plugs then it can cause a misfire. This does not mean the leaks are the cause but a possible cause. I would recommend having a mechanic like one from...

Hello. From what you describe it would appear that your vehicle is running rich, which can be caused by a wide variety of issues. A few common causes are a faulty fuel pressure regulator, leaky fuel injectors, a bad fuel...

The Check Engine Light coming on was an indication that there is a problem. Did you notice high temperature or if the engine was overheating? If there were no indications other than the Check Engine Light, then the system would...

Hello, There are a few things that can cause the car to jerk like this. One of these is a dirty or faulty mass air flow sensor. The mass air flow sensor monitors air intake as it is mixed with...

Hi there - yes, the "D" unit is an updated steering rack ("F" updated models are already available, so the updates continue). However, remember that this is electrically power-assisted, and there is a software component to the equation. If you...