2012 Ford focus SE 2.0 duratec rough Idle
Asked by Tonyfocus2012 Apr 22, 2017 at 05:53 PM about the 2012 Ford Focus SE
Question type: Maintenance & Repair
Ok quick background.
just bought a used 2012 ford focus , car would run rough idle low and stall.
car has 160,000 KM checked and replaced warn spark plugs car runs much better now. H9owever it still idles alittle low and rough but much less and doesn't stall anymore. now the weird part is that its not all the time , aannnnd , theirs no check engine light..... Heelp lol I'm quite good with cars . fuel filter is a lifetime in tank , air filter is clean , oil is fresh and full , even put super 91 octane to see
8 Answers
Did you replace cap and wires.
Tonyfocus2012 answered 7 years ago
its individual coils on the duratech motor and their would be a misfire code id assume no?
Tonyfocus2012 answered 7 years ago
Fuel filter is a life time in tank unit when on the road and moving the car runs like a champ and gets good fuel economy 5.8 to 6.7 l per 100km so I'm assuming it issent anything big
Remove & clean the idle air control valve, spray it out with a cleaner like brake clean, throttle body cleaner, etc, CAN ALSO USE Q=TIPS ALONG WITH SOLOVENT WHILE CLEANING IT. LET DRY & RE-INSTALL. It attaches to the intake! also try cleaning the maf sensor with a maf sensor spray or other spray cleaners-ie brake clean etc, disconnect, spray, let dry b4 installation. check pvc valve replace as needed! parts are available & plentiful in junkyard & much cheaper!!!
These cars have Fuel Tank issues. There is a fuel tank purge valve under the air filter box. It takes pressure out of t he gas tank. If it fails it can cause some crazy symptoms. Mine started rough idle and dying after fill up. Then it turned into dying while driving. No engine light but a code was stored under a P code relating to fuel pressure. Replaced Valve, solved my issue.
Yes my 2012 focus runs rough on highway 80 it starts. The motor sounds rough and you can hear it.Also my steering wheel was vibrating bad then went in had my wheels rotated it's still shakes just not as bad.I'm almost at 170000 miles. No stalling I was having a problem starting it took it in they told me it's my shift when put in park it doesn't register to the starter. Love my car was hoping I could hear from people if it's going to cost an arm and a leg to fix the problems I'm having with it. I am the only driver I bought it new first new car to me I usually buy used. Thanks in advance for any help.
FORD=FOUND ON ROAD DEAD FORD=FIX OR REPAIR DAILY.....i just bought one got all these issues then some taking it to dealership in few days when they can "work" me in ...should've stuck w/ my VW went up to 292,000 miles ran good until some clown rear ended me pfshhhhh now THIS
Wrestlingmomof2 answered 4 years ago
I have a 2012 ford focus sel and when I fill my tank it used to say 271 miles to empty but yesterday when I filled it up it said 91 miles to empty..... Does anyone know y it would be doing this
