Hi and thanks for contacting YourMechanic. Since you are getting different sensors acting up, check all of the connections to all of the sensors and make sure that there is no missing bolts. There could be a vacuum leak causing...
Hi there. The fan clutch controls how quickly the cooling fan spins against the radiator. The hotter the engine gets, the more the fan has to spin. If the fan clutch is not functioning correctly, the fan won’t spin at...
This may be a problem with the exhaust catalyst partly clogged causing excessive back pressure. There is a test where the O2 sensor is removed and the back pressure tester is put in the hole to see if the catalyst...
Hello. If the battery is good then chances are that the starter is the problem. I would usually go to the starter wires and test them to see if there is power when trying to start it. If there is...
This can be caused by a number of things such as low coolant levels, a faulty thermostat, or a failing coolant fan switch. As you may know, the coolant fan switch helps to maintain the proper coolant temperature by turning...
Although your problem with the oil pressure warning is probably instrumentation. It's a bad idea to ignore oil pressure warnings. If the oil pressure is actually low, it will do serious engine damage very quickly. The thing to do is...
A flashing oil light is typically a sign that either the oil level is low, or the computer has sensed a lack of oil pressure. I hope it isn't the case, but usually when an engine starts to lose power...
First off, you need a working thermostat in the car for it to function properly. If you removed the thermostat to fix an overheating problem, you will need to install a new one and begin the process of diagnosing the...
It sounds like your Mercedes Benz E500 may have a starter issue. If everything works as far as the radio and lights go, the battery is most likely performing as it should. If the battery is okay and the starter...
The bottom pulley is called the harmonic balancer. It helps the internals of the cars engine rotate smoothly by damping the vibrations. The pulley portion of the balancer is attached by a thick rubber glue. Over time, this glue becomes...
Hello. Thank you for writing in. The amount of damage that was done by the diesel will depend on how long it sat in the system. By pulling the filter and pump, I hope you mean that you changed them....
Tires can be a costly part of the car owning experience, especially if you happen to be driving a large truck or SUV. Learning to recognize the signs that your tires are in good health or not is the first...
It could be that the speed sensor is bad. The transmission will go into limp or safe mode when it loses one of its main inputs, such as the transmission speed or transmission range sensor. It may also go into...
Hi there. It sounds like you may have blown a fuse during your repair of the main relay. Check all your fuses and relays and replace them as necessary. Then, using an electrical wiring diagram, verify that the wiring harness...
If you look at your fuel gage, it will say "premium fuel only". The vehicle was designed to only run on this fuel. If you try and run the lower grade fuels, you will run the risk of damaging the...
Water pumps do NOT get loose on an engine excepting an unusual circumstance where the pump was improperly installed. So, the mechanic might be referring, in your circumstance, to a seized water pump or a situation where the water pump...
First of all, overheating the engine will damage it. The list of reasons why is long, but here is a partial list of reasons why overheating the engine will ruin it. The engine oil becomes much thinner at...
Hi there. The blower fan switch not working may be, a blown blower motor fuse, a faulty blower motor relay, a faulty blower resistor, a faulty blower motor, and/or a faulty blower motor switch. Proper diagnoses should be performed to...
You should first check for any vacuum leaks that would cause the engine to idle higher than normal. Even your idle in gear sound a little high. If no vacuum leaks are found in the intake or the brake booster,...
