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27

Your fuel economy change is caused by the fact you're not using the same fuel. Fuel changes twice per year from summer blend to winter blend and back again causing a change in the Reid Vapor Pressure (RVP). In summer, the hotter temperature evaporates liquids easier causing more pollution, so it is blended to lower the RVP. This blend is more costly to ...


17

What you've been sent is the radiator for the diesel variant - as opposed to what appears to be the 1.25l Zetec petrol engine in your first diagram. You're correct in that the "main" radiator connections are the same between the two (Despite the confusing placement of the lower hose on the second diagram it is the same hose and hooks up in the same place ...


11

It depends on a ton of things and it won't be linear in most cases. Every car has different things that wear out at different rates and those things affect horsepower differently as they age. Not everything that wears affects power. A coolant hose that wears out might cause the engine to overheat, but it won't affect power until then. But vacuum hoses can ...


6

Hopefully not a bad assumption, but I'm assuming you're vehicle is right hand drive (European). That said, to get to your resistor pack, there is a kick panel which has to be removed which is against the center console in the passenger footwell. The panel should be fairly easy to remove.once removed, locate the blower housing, which is towards the front of ...


6

Tires are out of balance, or possible a bent rim. Take it back to where the tires were put on and tell them you have a vibration. If you have a vibration when you are using the brakes that goes away when you take your foot off the brake you may have warped rotors. I would take car of the tire balance issue first before addressing the rotors. You may only ...


4

If your starter motor is working 8 times out of 10 then you probably need to replace it. It very likely has developed a dead spot on the armature. If the armature is positioned so that the brushes land on a dead spot, it won't start. Brushes are the electrical connection between the power source and the moving armature. The picture below shows how these ...


4

You have to clean the engine bay first When troubleshooting for the source of an oil look you first have to completely clean off all of the old oil, dirt and built up grime. You can get a citrus based cleaner for oil at an auto parts store. Typically you will heat the engine up enough to make it warm but not hot enough that if you sprayed something on the ...


4

UK type approval states that a speedometer may read with upto a 10% error provided that the speed shown is either true or over. A speedometer may not under read when a car is new. Most manufacturers therefore calibrate their speedos for a slight overread. You must also remember that the difference between tyres with new tread and those worn to the UK ...


4

Your vehicle does not operate at maximum efficiency until the engine has reached its normal operating temperature. This is generally when the coolant temperature reaches about 200 degrees Fahrenheit. In the winter it takes the engine longer to reach that temperature simply due to the colder ambient temperature.


4

Another reason: Winter tires. Choose between hard tires (good fuel economy, REALLY bad on snow) or soft tires (worse fuel economy, good on snow).


4

P0340 is certainly a reason why the vehicle isn't starting but it indicates an issue with the camshaft position sensor rather than the crank. You really need to check the output of the camshaft sensor with an oscilloscope to see if you have a good signal. You also seem to have an issue with the crankshaft sensor, it should not wear out as nothing should be ...


3

Maybe cap or reservoir has fractures inside and you don't notice it. When the pressure increases (which is normal) damaged teeth can't withstand that load. Try to change your water reservoir and it's cap.


3

It's a little unclear what you're asking for, but your car has this engine: Ford DLD. It is a inline, 4 cylinder Diesel engine with a turbocharger, but it most likely doesn't have an intercooler. The 1.4 part is the "displacement" of the engine, and it is basically the "size" of the engine. This model engine is referred to as "DV4 TD" or "DLD-414".


3

tl dr: There is almost no way to tell from the video what is causing the noise. From the video it sounds like an exhaust leak causing the tick ... but smartphone video is notorious for not giving an accurate sound representation, so this is what you need to do. If you have a Harbor Freight somewhere close to you, go down and purchase an automotive ...


3

It's very possible that you have a problem in the glow-plugs of your diesel engine. Glow-plugs are used to preheat the combustion chamber on a cold engine. If you're having problems starting the car when it's cold, the glow plugs are probably not working, or there not on long enough to heat the chamber properly. You also mention that it has a bad sound when ...


3

It sounds as though your serpentine belt is the issue. The serpentine belt is connected to each pulley (a pulley is the circular disc that the rubber belt travels over) of various engine components (power steering, AC, turbocharger if you have one, etc) and as such has a lot of tension on it, but can't have too much. It may be that the dealer installed a ...


3

The part you are pointing to is the air intake for your engine. This pipe should be coming from the intercooler. Since your engine is a turbo diesel, this would be directly related to why your engine is smoking (assuming you mean it's smoking out the tail pipe). What is happening is if there is a crack in this pipe, your engine is not receiving all of the ...


3

First, I'd recommend not sticking your fingers in the coolant overflow when the car's been running for 10 minutes. It should be fairly warm (if not downright hot) at that point (even in the Winter). Second, coolant comes in all different colors. Green, Red, Orange, etc. The color alone isn't that concerning. Even if it's brown, it could just have some ...


3

I see two ways there: Just drain it empty Overfill your wiper fluid container with water. That way you could wash the old fluid out or at least thin it. Then drain empty again. Because to unscrew the wiper fluid container is not so easy without mechanical experience and even danger, I would not do that on your place.


3

The usual culprits are one or more of the following (from most- to least likely): flat spots on tires caused by wheelspin or locking brakes unbalanced rims bent rims (very) cheap tyres worn shock absorbers warped brake rotors worn wheel bearings loose wheelnuts worn suspension bushings loose control arms.


3

In the winter the ambient air is much colder, making the air more dense. Denser air will contain more oxygen and so the car will inject more fuel in order to maintain the correct ratios. This effect could be exaggerated by the fact your car is turbocharged and that the inter-cooler will be working much more efficiently in the winter, further reducing ...


2

Unless there's some kind of new clutch pedal sensor I'm not aware of, I'm pretty sure they exist only to keep you from starting the engine with the clutch engaged. I always jumper the cable on them so I can start the engine with the clutch engaged, which is great in an emergency if the engine won't ignite (it allows you to move the car around a parking lot, ...


2

I've experienced this on a Ford Escort RS Turbo and the source of the vibration was traced to a warped brake disc. This was exacerbated on this particular car as the wheel design meant one side of he car would force cool air across the brake and on the otherside, not. This was the side that warped the disc. sadly with alarming regularity. As Zaid says, ...


2

I'm not familiar with the Fiesta, but since even much larger cars (with much strong clutch assemblies) don't have hydraulic pumps, I'd expect that it doesn't have one... Should be a simple hydraulic system, basically just a master cylinder, a line, and a slave cylinder down to the actuator. Possible problem with the transmission or the linkage from the ...


2

here is a clear picture underthe dash of a right hand drive fiesta. it may be the same for older fiestas but this one is a 2011


2

Disconnecting the battery of the vehicle will erase any stored engine codes (remove positive and negative cables and then wait for 15 minutes for residual charge to empty), but I would recommend getting the codes actually read at an auto service center or parts store. Typically these places will read the engine codes for free with an OBD-II diagnostic tool. ...


2

Try this: Turn off the engine and close all the doors Turn the key to electrical systems on (Position II) Hold down the gas pedal and brake pedal simultaneously for over 20 seconds This is, at least in some of Ford's smaller vehicles, a method that effectively resets the check engine light.


2

Presumably in winter you'll have lots of additional systems switched on such as the heating, demisters, headlights, etc... All of these things sap your fuel consumption.


2

I've experienced this once before on a Lancia Y10. The fuel breather was blocked so as the fuel level decreased, a vacuum would form above the fuel in the tank and eventually this would overcome the fuel pump. Upon stopping the car and removing the filler cap, you'd hear an audible "whoosh" as air was sucked back into the tank. This behavior was only ...


2

If you have a coil on setup or even a coil over (both with individual coils per cylinder), change out the #2 cylinder coil with a different coil ... doesn't matter which one. If the misfire follows the coil, the coil is bad and replace. If the misfire stays at the #2, then it's something else, most likely a bad spark plug. If it's due for a tune up anyway, ...


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