I bought my SE thinking I had the same engine for mods as any focus in the line. Did I goof as much as I did when I had my 2.0 SPI compared to the Zetec?
Further is this engine known to have a vibration at idle? I'm 6.5k in, mentioned it at an oil change and was dismissed as it being normal for the engine.
All 2012's have the same engine except the electric, of course, so you have the ti-vct. Not sure about the vibration. I get it sometimes with th ac on, but its not super noticable.
Further is this engine known to have a vibration at idle? I'm 6.5k in, mentioned it at an oil change and was dismissed as it being normal for the engine.
X2. I've done a lot to try and make mine go away (octane, filter, mounts, etc.) and it always comes back. I'm pretty sure it's just characteristic of the engine.
Thanks good to know about the engine. And also reassuring with the idle being common. I haven't had a trip yet where I could have the A/C off completely, since it's been scorching hot since I bought the car. Makes sense if A/C makes it more noticeable!
I was told that the rough idle is due to the engine being tuned for efficiency to use less gas at idle than a conventional engine. Not sure if it's true, just what I've been told by Ford rep.
Also, it seems to be more noticeable when I have under a 1/4 tank of fuel for some reason.
The DI on my new '12 Focus rattles just the same as the DI on my '06 Audi A4. I'm guessing the Ford Engineers using the A3 as a benchmark took it too seriously
I drove mine this morning for the first time with the A/C switched off and noticed a slight vibration at idle.
When I turn on the A/C it picks up the idle speed slightly and the vibration (or slightly rough idle) goes away.
Ford replaced the PCM on my 2009 SES coupe (TSB) in May and since then I have noticed this as well. I have also noticed a significant increase in mileage. I'm hitting 37 MPG on the highway with the A/C on (rated 32 MPG when I bought it), so I think it's just a result of some kind of programming change with the new module. I'm not complaining, as it hasn't changed the driving characteristics at all. Hard to believe that small of a change has increased my mileage by that much, but whatever.
A/C Off it idles about 100-200 RPM's lower, and there is a vibration. Flip on the A/C, idle smooths out instantly.
And I only mention this in this thread because I think it might be more related to Ford's programming than any physical characteristics of the engine.
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