27 votes
Accepted

What causes a 20% difference in fuel economy between winter and summer?

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 (...
spicetraders's user avatar
  • 1,533
17 votes
Accepted

Replacement ford fiesta radiator has extra hose

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 ...
motosubatsu's user avatar
6 votes

Ford Fiesta Mk6 heater blower fan motor resistor location?

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 ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
4 votes

Oil leak: any idea of the likely source?

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 ...
DucatiKiller's user avatar
  • 32.9k
4 votes
Accepted

2012 Ford Fiesta S speedometer calibration

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 ...
Steve Matthews's user avatar
4 votes

2012 Ford Fiesta - New Engine, Harness, Sensors, and PCM - Still Crank, No Start

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 ...
Newbie Noob's user avatar
  • 2,781
4 votes

What causes a 20% difference in fuel economy between winter and summer?

Another reason: Winter tires. Choose between hard tires (good fuel economy, REALLY bad on snow) or soft tires (worse fuel economy, good on snow).
TomTom's user avatar
  • 145
4 votes

What causes a 20% difference in fuel economy between winter and summer?

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. ...
Mike Laughlin's user avatar
4 votes

Original Ecu swap back into my car with correct VIN

The locksmith didn't actually program your keys since keys are stored in the body control module on this model. The programming that needed to be done is called "Parameter reset". This ...
narkeleptk's user avatar
  • 3,780
4 votes

Engine exchange using non-turbo for turbo version

Both your 1.0L EcoBoost engine and the 1.6L naturally aspirated engine are part of the Sigma family of engines. Therefore the bolt pattern for the transmission should be the same and the 1.6L engine ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
3 votes

What causes a 20% difference in fuel economy between winter and summer?

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 ...
Stew's user avatar
  • 159
3 votes

Waterbottle cap still poping off

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 ...
Kerem Boyalı's user avatar
3 votes

Ford Fiesta zetec 2014

Absolutely normal. When you take your foot off the brake, the front brakes are release which puts all of the stopping power to the rear brakes where the hand brake (E-brake) is applied. Once this ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
3 votes

Will replacing the clutch/brake fluid make the clutch pedal smoother? It's a little uncomfortable to operate

The theory behind the fluid change is that as hydraulic fluid ages, is exposed to heat and moisture it becomes more viscous, i.e. thicker. Thicker fluid takes more effort to pump, changing the fluid ...
GdD's user avatar
  • 16.9k
3 votes
Accepted

Red 2014 Ford Fiesta clear paint coat starting to peel

The clearcoat in the image is peeling for one of two (or both) reasons. It has either lost its mechanical or chemical adhesion to the base coat. Unfortunately, once the peel has started, there's not ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
2 votes

Ford Fiesta Mk6 heater blower fan motor resistor location?

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
Jordan Hanash's user avatar
2 votes

Ford Fiesta 2001 1.25 engine issue

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 ...
anonymous2's user avatar
  • 5,225
2 votes

Ford Fiesta 2001 1.25 engine issue

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 ...
Dalton D's user avatar
  • 1,958
2 votes

What causes a 20% difference in fuel economy between winter and summer?

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.
Steve Matthews's user avatar
2 votes

Clutch Fault, Ford Fiesta ST 16 Plate

I agree that a 1 year old car with 11k miles should NOT have issues like that. That said, there are a few things you should do. Check the warranty paperwork that should have come with your car. ...
kyle_engineer's user avatar
2 votes

Ford fiesta diesel brake pedal hard

If the pedal is so hard that it has little effect on the brakes it is most likely a vacuum issue. On diesels there is a separate vacuum pump connected to the brake servo via a pipe. Check the pipe ...
Newbie Noob's user avatar
  • 2,781
2 votes

UK - Fiesta 2001 1.25 P0302 Cylinder 2 Misfire Detected

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 ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
2 votes

2012 Ford Fiesta - New Engine, Harness, Sensors, and PCM - Still Crank, No Start

After having to remove the gearbox twice, I can now answer this. I'm not sure if your problem was resolved or not, but for any other people that have the same issue, car will crank for half a second ...
RyanTheDirtMonkey's user avatar
2 votes

Engine gradually loses power while driving highway speeds

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 ...
Steve Matthews's user avatar
2 votes

No voltage on injector lines following engine rebuild

Based on you update, it sounds like you have a fuel delivery problem. You were right to check in your fuel tank, but you should find your fuel pump in there. Usually the sender unit and pump are built ...
Michael Hartmann's user avatar
2 votes
Accepted

Car not accelerating and over revving

Based on your description and assuming you have a manual tranmission car, it looks like your clutch is worn out and slipping. Driving like this with an over-revving engine and a slipping clutch will ...
MadMarky's user avatar
  • 1,340
2 votes

My lighter fell into the hole at the handbrake

Probably not, most likely it will find some cavity and remain there for the life of the vehicle. However it is full of fuel, if it were get close to a heat source the results could be bad. Often ...
GdD's user avatar
  • 16.9k
2 votes

UK 2017 Ford Fiesta Bluetooth issues

I never touch any Ford Fiesta before and only had a few cars in my life. But have a similar problem when switching to my current car, which uses an aftermarket android stereo. If I get your question ...
purnadika's user avatar
  • 171
2 votes

I cant get this message off my dashboard

Try the large knob in the middle, between the CD and TA buttons. Try left. EDIT: 2012 Ford Fiesta Owner's Manual
tlhIngan's user avatar
  • 12.2k
2 votes

Ford Fiesta 2010 P1934 Pending VEHICLE SPEED SIGNAL

Please see Ford DTC P1934 This DTC sets when there is a sudden loss of vehicle speed signal over a period of time. Vehicle speed data is received from either the transmission control module (TCM) or ...
Weather Vane's user avatar
  • 2,279

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