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Hello, thanks for writing in about your Ford Fiesta. You need to check to see if the clutch starter interlock switch is making contact. If the clutch switch is bad then you need to have it replaced. If you're unable...

Hi There, It does sound like your car may be overheating and that you may possibly have a bit of a cylinder head gasket leak. A blown head gasket may cause a number of different symptoms. A head gasket that...

While the front and rear defrost will take care of fog or mist on the front and back glass, you’ll notice that sometimes the side windows fog up as well. Here’s how to defog them: Turn the air conditioner...

Yes, diagnosing the leak and implementing the required repairs is no problem and is a fully covered service. To request that service, you can schedule via YourMechanic's leak diagnostic service page. If the drain tube is readily accessible, I can't...

10,000 euros is around 12,000 US dollars. I would say get yourself a good used Toyota. Those things can run forever and they are really made well. I know they make a lot of Toyotas in Europe, too. Japanese cars...

Hello. The foggy substance on your headlights is known as oxidation. Normally it will only form on the outside of the headlight but at times find its way to the inside due to moisture. To clean the oxidation on the...

It is quite possible the code was set as an intermittent problem. The thermostat may have been stuck at one point, freed up and began working again, and then allowed the light to go off. Most computer controlled engine systems...

Hi there. For the speedometer to be malfunctioning, either the vehicle speed sensor (VSS) could be loosing signal or the gauge has a bad resister. Now, as far as the transmission slipping, check the transmission fluid level. If the fluid...

Hi there - the symptoms you describe indicate a thermostat that is not properly keeping engine temperature at the correct operating level. The thermostat should restrict flow as necessary (stopping or running the heater) to keep the engine at operating...

Hello. If the horn is working normally then you have a programming issue. In most cases the control module for the alarm will need to be reprogrammed by the dealer in order to make it operational again. If the horn...

Your MAP sensor is an important input for your computer. It helps determine the load on the engine to calculate the correct amount of fuel to inject. It sometimes takes a few seconds for the vehicle to realize that the...

There is a component in your vehicle that is malfunctioning and causing the battery to drain down. There is a very specific way that this type of problem needs to be diagnosed, in order to find what the root cause...

Hi there. The undercoating you're father is referring to was a very common factory or aftermarket addition in the Northern United States from the mid-1950's up until the late 1990's. It was essentially a polymer spray that protected exposed steel...

A scope (oscilloscope) exam during those few minutes after it starts, and while the engine idles roughly, will reveal the cause. It is either ignition or fuel system related. To schedule a rough running engine diagnostic(https://www.yourmechanic.com/services/car-idle-is-rough-inspection) please feel free to...

The first thing you want to do if you feel it jerking like that is quickly jack up the wheel and pull off the tires and see if they are sticking. If they are sticking, a lot of times, the...

Hello - your Buick has most of the electrical relays mounted under the dash. It is likely that one or more of these relays (ignition or AC relay) has burned contacts and causing the electrical power interrupt you notice to...

Synthetic vs conventional oil is one of the most debated myths surrounding the topic of oil changes. This will not hurt your engine when switching from synthetic to conventional or vice versa. In fact, Synthetic blend oils are actually a...

Hello, thank you for writing in. The vehicle originally gave you a code for a misfire. It could have been caused by the spark plugs or a fuel problem. The second code pertains to a low fuel pressure being detected....

This is generally related to spark problems when it is more consistent. Spark related problems generally will result from things like ignition coils, crankshaft position sensor, spark plugs, spark plug wires or ignition modules not working properly. As you know,...

Hi there, thanks for writing in about your 2013 BMW 650i. Your battery receives a charge voltage from the alternator while driving. The alternator is responsible for maintaining the charge on a battery during vehicle operation. Very low power can...

Your presumption sounds exactly right to me. The only time that coolant enters the passenger compartment is through the heater core. If you have coolant leaking into your interior it is under no uncertainty that your heater core is leaking....

You will have two inner bushings for each control arm and one outer ball joint for each arm. You have upper and lower control arms.

Hello - I agree with your diagnosis - a water pump failure is a prime candidate for both overheating and a "no heat from the heater". Lack of water flow will cause both symptoms, and cause damage to the engine...