2015 ford focus idle issue

it revs its self then it runs rough an idles under 500rpm

[@sonyarogers6194]

Yes I’m having the same problem they have changed the plugs cleaned the tank changed sensors and some type of canister and it’s still doing it!

[@kamryn7496]

I never looked into this issue I just drove it as it is an it seemed to just fix it’s self haven’t had this issue sense like 2 weeks after I made this video

[@baldwinavendano930]

Same thing here. Ford 2012 SE manual trans. Revving/idling buncing ups and downs between 400-700s revs almost every red light and ocassionaly if i come at neutral to traffic lights it has died completely (just restarting it and will go)

[@Jackson-qi4rw]

Mines doing the same thing! Did u fix it???

[@DrHavok1]

​@@Jackson-qi4rw clean the throttle body super easy fic carbon build-up keeping the butterfly open and revving... goes away as you're driving it right? easy af fix

[@MJH2FLY]

Rember flex fuel vehicles need b12 if not will have rough idle or won’t shift properly you’ll think it’s transmission just put some b12 engine cleaner will fix it right up

[@mlgoods1072]

Can I do this for a 2001 ford focus

[@randybean5448]

camshaft position sensor?

[@LilSpeksz]

Unplug your throttle pedal inside the car and reconnect it

[@rudy6601]

Clean your throttle, change your spark plugs, fuel injector cleaner, and idle air control valve clean or replace.

[@kamryn7496]

I put E3 spark plugs in it when I bought the car in 2018 some one told me thouse are trash plugs I’m thinking taking them out an I’ll put ngk laser iridium plug what do u think?

[@rudy6601]

@@kamryn7496 i don't gimicy parts just stick with OEM

[@TexasRigged]

My 2018 focus started doing this today

[@kamryn7496]

Mine just stopped doing this it started when I put a cold air intake on it but after putting about 1500 miles on it it stopped I guess the computer just had to adjust to it I also hard that the purge valve could cause this issue to

[@TexasRigged]

@@kamryn7496 Turns out I just had a dead battery, with a ton of corrosion on it lol, that negative battery terminal tends to foul up pretty bad

[@AJ-uc5hg]

Mine does the same thing . I have 2012 and they tried to to tell me it was transmission

[@kamryn7496]

Definitely not that mine has a new transmission it was replaced under the recall at 116k miles it’s now got 133k the problem just went away

[@leo2b788]

Mine does the same thing, same year and model, even with a manual transmission it will idle the same way as yours if being in 1st and going to neutral doesnt fit the cars high standards. OBD2 reader gets a P0420 code, which is bad cat converter/o2 sensors. My thoughts (and also thoughts of a Firestone mechanic) are that the engine is choking from a clogged cat converter. Replacing it seems expensive even if on my own, thought about boring a hole into the honeycombs or even simply cleaning it with laundry detergent and water but with the size of it that could be some awkward work. I’ll be working on that this month and seeing if my problem goes away, might also try a quart of laquer thinner into the gas tank and have those chemicals clean out the cat converter as i drive it. I’ll keep updates and i also enjoy hearing other peoples suggestions in these comments

[@mthiyanesonomo]

Any update?

[@raviramiah5498]

I’d check the MAP sensor and get that changed / fuel pressure regulator changed . I have a p0420 code and a rough idle at 800 rpm .. it jumps sometimes . I’d also check for recalls on the fuel vaporiser as Ford US should fix this under a recall 👍

[@kamryn7496]

I’ll have to check my cat temp from front to the back see if it’s the same but the car did die on me 1 day when I was waiting in a drive thru it wouldn’t wanna stay running it got a code for low fuel pressure from the high pressure fuel pump I never fixed it I parked it for a day an guess it fixed it’s self it’s been a year an hasn’t died on me randomly again

[@whatswrongwithmybody9214]

If your Cat is the problem, pour a bit of lacquer thinner in the gas tank and let it idle for awhile. This was a problem I had with another ford and it cleared it right up. Only thing though is that the smell was pretty strong like sulfur. So if your not smelling that, not sure if you have the same problem I did.

[@siicaoballe7015]

My 2018 ford focus just died completely so sad it has 61000 miles

[@sebastianfrost5035]

Clean the throttle body and change the plugs

[@kamryn7496]

I clean the throttle body 20k miles ago an put E3 sparkplugs that should be fine

[@carma42]

Same thing, same year. Did you figure this out?

[@kamryn7496]

I haven’t it this issue comes an go’s I noticed if you run the car with the ac on it doesn’t rev its self

[@TxAlonzo]

Same here, did either of you find the problem?

[@carma42]

@@TxAlonzo I did. I had replaced the throttle body, gave it a tune-up with spark plugs, and even put an O2 sensor on because I had another engine code thinking that that might be related. It had no effect. But as soon as I put this part on from Amazon the idle problem went away immediately and has not come back. Dorman 911-777 Vapor Canister Purge Valve. It is currently $36 with prime shipping so it's a pretty cheap test compared to a throttle body LOL.

[@kamryn7496]

@@TxAlonzo no after I put a 1000 miles on it it stopped doing this my guess is the computer had to adjust to the cold air intake I put on the car

[@TxAlonzo]

@@kamryn7496 thanks alot

[@mohamadjawhar363]

Bro if your problem is solved please tell how?

[@kamryn7496]

It just randomly stopped doing this I haven’t had this issue for a good while sense I made this video not sure what it was 🤷🏻‍♂️

[@saramartinez9425]

My vehicle does the same thing, did you figure out the problem? Please let me know

[@theasim3757]

Is it vibrations or misfire? How many miles?

[@sebastianfrost5035]

Clean the throttle body and change the plugs

[@kamryn7496]

My focus hasn’t done this past 2000 miles I put on it I heard this could be the purge valve issue

[@kamryn7496]

@@theasim3757 wasn’t a misfire it basically felt like it was running with the map sensor unplugged

[@tshitshegugroupfire7837]

@@kamryn7496 thanks

[@williammarques7577]

I'm never buying a ford again. Not that I came here just to hate on ford, but I'm trying to find the reason for a specific knocking noise that I'm having in my engine, and I'm shocked to see how many issues this car has.

[@kamryn7496]

It’s not the noise of the injectors? Check your oil make sure it’s full if u can remove the drive belt to see if it’s coming from one of your pulleys don’t normally see issues with the engines on these cars

[@DrHavok1]

clean the throttle body super easy fic carbon build-up keeping the butterfly open and revving... goes away as you're driving it right? easy af fix lots of vids on that all over youtube

[@kamryn7496]

I've already did that before I made this video I put a k&n intake on it an clan the throttle body before I put it on few months later I started having this issue

[@tifftiff2711]

Hello! I have a 2016 Ford Focus SE Flex, I kind of have this same problem also. When I’m in idle either parked or at a red light with the ac on, it has shut down on me before. Sometimes I can tell when it happens when the ac has run a bit too long, it starts feeling like it’s going to power down. When this happens, I turn it off and drive with no problem. I’ve also did the self test and only got code F006_16. Does anyone know what could be causing this?

[@hidro9yne5ive]

Idle air control valve

[@kevinflorence581]

There’s a gas tank recall on the 16s air gets in your fuel tank and it causes issues. I’ve had mine fixed but I’m wondering if it’s occurring again

[@kamryn7496]

This issue still comes an go’s about a few months before I made this video the car did die on me an would not want to run it got a code for low fuel pressure at rail witch is the high pressure fuel pump under the hood I left the car in a parking lot came back next day it fired right up an hasn’t died on me again check engine light went away guess it fixed it’s self once in a blue moon it will run rough at idle like this still

[@jupiter7040]

Iac valve

[@mikereynolds1981]

Hello, mine does it when I’m driving. Stays up in 3-4 but when I brake it goes down

[@kamryn7496]

This issue still comes an go’s about a few months before I made this video the car did die on me an would not want to run it got a code for low fuel pressure at rail witch is the high pressure fuel pump under the hood I left the car in a parking lot came back next day it fired right up an hasn’t died on me again check engine light went away guess it fixed it’s self once in a blue moon it will run rough at idle like this still

[@mikereynolds1981]

@@kamryn7496 Hello, Thanks for the response. I'm still looking into it. So many different things it could be. I left the part out that when it's at 3-4 rpm won't go more than 20-25. But left it parked for a couple of hours after I posted last comment and drove fine. But something doesn't seem 100% when I’m driving still.

[@kamryn7496]

@@mikereynolds1981 I think it could be the purge valve in the gas tank doing it or maybe a sign of high pressure fuel pump under hood going out both of those are known issues

[@James-zh8lc]

Those years of focus have a bad grounding connection to the fire wall. They painted it at the factory. Remove it, sand the connection and replace.

[@Carlos-HP]

It's clogged up

[@kamryn7496]

This problem just went away before it started doing this I clean the throttle body out an spray some seafome in the throttle body as the car was running to clean some carbon out then I put a cold air intake on it after awhile I had this issue

[@FranciscoGarcia-pn9ql]

Take it to a mechanic