Subaru rough idle After a I have a 2002 Legacy 2. CEL went away, and it made *a small improvement* to how the car ran. I start the car and it idles a little rough for a few seconds then evens out (for the most part, still a little rougher than I would like at idle IACV = idle air control valve. 5 XT Touring a year and a half ago because I needed a compact SUV with a lot of clearance, for camping, home depot trips, etc. It did stall me once while coasting at 30mph. 2017 wrx here and i've started to experience the same thing after about 7 months. did the Subaru top 2011 WRX - Rough idle, constant stalling, won't stay running Factory 2. Recently, the car has occasionally started running rough from startup. Shaking with rough idle at cold start ('14-'18) Seems to go away after long trips and returns after prolonged idling or city driving. Typical 'sputtering' symptoms at idle, i. 5-12. This was caused by the #3 spark plug havi Yes unfortunately it was. Sits atop the throttle body where the coolant lines go in and out. A few days ago I took delivery of a new 2024 Crosstrek with 2. On a cold start it even sounds like there may be some tapping from the timing cover. I just took it out for If you own a Subaru Baja and it's idling rough, you may be feeling frustrated. A couple were really tight I Have a 2015 WRX that I bought Pre-Certified with 16K miles. Issue: Rough idle occasionally. 5i a few weeks ago, and the car mostly runs fine, but has a slight shake at idle and doesn't seem to run as smoothly. Sometimes when the According to the service manual for the 2014 Crosstrek, top causes of rough idling are (1) a loosened or cracked intake duct, (2) a loosened or cracked PCV hose, (3) a loosened Does anyone else notice a rough idle on start? It’s noticeably shaky on start when the blue “cold engine” light is on and the RPMs are 1200-1500. HI all, I have 2002 Subaru WRX 4EAT that has had a rough idle for quite some time. I'm bothered with the rough idle when the engine is cold. I intentionally warm up my Subie before driving after overnight; I go out, fire up, adjust rpm to lower idle (*), go back inside and get my full Hi, I have an 07 outback. Disclaimer: Speaking for my personal experience only. Fuel is injected during My 2015 3. idled fine for a few seconds then jumps up to 3-4k rpm then down under Surging idles happen pretty often on Subarus. 5i auto. Once I get into town (I live out in the Starting at around 110,000 miles my 2004 Forester XS started getting louder at cold start and gradually got worse. During that time it sounds like its struggling and going to Welcome to the North American Subaru Impreza Owners Club: Thursday April 3, 2025: Home: Forums: Images: WikiNASIOC: Products: Store: Modifications: Upgrade Garage : NASIOC > NASIOC Technical > FA Series @Velvety I’m a first time Subaru owner, purchased the 2019 Sport and I noticed a rough idle from a cold start. By cleaning the EGR valve, you can assure that the emissions sy Idle is at ~600-700 RPM when stable. https://twitter. The early morning 30-minute drive, everything was fine. Thanks BOD. did the danzo fix too, everything except the intake hoses and sometimes i'll get the rough idle Hi All. So far, I've given the MAF sensor a quick clean and did an idle relearn after that. This is using the stock lamco boost gauge that is in Mpa. 5L XT that idles rough pretty much all the time and the rpm gauge fluctuates at stop lights between 500-1000rpm. No cel's. also smooth out rougher idle. UNLESS bad timing or sensor can cause a misfire, Vac leaks normally result in a high idle if any idle change at all, the system will accomidate for the vac leak by lowering the IAC percentage to get the "wanted" amount of air Recently purchased a 2010 Subaru Forester, nice car. Very common issue causing rough idle/low I have a manual 2006 subaru outback 2. If I rev it up, it "seems" to run fine, but you'll get a OK here's the deal. Went to go leave again and it started to do an EXTREMELY rough idle. Worn 2024 Subaru WRX Limited - Ignition Red 1994 Mazda Miata - M Edition (108k miles) Idles rough like a light massage stopped in Drive and it doesn't idle rough when in As reported by Car From Japan experts, most Makes getting this engine rough idle after warm up are: Subaru; Honda; BMW; Though the problem is not common drivers of the Makes had their car serviced at garages for Seeking advice from long term owners of a Subaru with CVT transmission, or Subaru mechanics who service/fix these on a daily basis. It was dirty. 5L 184,000 miles Voltage 11. Afterwards, the Forester started HARD and idled rough to the point where the whole hood would shake. I’ve got a 2012 Subaru Outback 2. Over the past 6 months I've been getting a rough idle where it seems it may die at a stop and stutters When my05 was stock I kept complaining to the dealer about rough idle, the tech found a high altitude update for the ecu, it really did help with the rough idle problem, now that Rough Idle on 2008 Forester X I have the same type of problem with a brand new 2008, 100 miles. Also normal. Piston rings help seal the combustion chamber and control the flow of oil. Please let us know how it worked for you. After I cleared them, the idle is very rough, and sometimes dies at a full stop. Never Our 2018 started having a rough idle at a stop light. However it would only do this after warming up. com/McCauleysAutoThe Subaru in this v The cold start Idle is so rough it seems like the engine is about to stall and the exhaust pops like crazy. My 1995 Chevy S10 The only place her Forester is a bit more rough is on cold startup. I know they typically idle rough anyway. bad shaking, occasional stalling, This one is driving me nuts. 0L. A bit disconcerting since none of my other cars I had (save for my '80 Accord that had a manual choke) ran rough at idle. The main symptom is that after a few minutes of driving, the car begins idling rough and threatens to stall out. On a revisit to the mechanic he noted the timing belt to be off allignment by a notch and this fix greatly I tried 4 relearn cycles and still idles rough. I reset the ECU with the Accessport, it would run okay for a few days and then start up again. I lowered it a whole bunch as a test. The procedure worked like a charm! My question: When driving up to a stop sign or light, clutch pressed in, the rpm's will dip very low and the car will run rough for a moment then the idle will automatically go up to around 1500 to Car idles super rough and stalls after 3 seconds of being on - will not stall if I constantly give it gas, but when idling in drive (say, at a stop sign or red light) after driving for a Rough Idle No CHECK ENGINE LIGHT~~~~ EASY FIX, In this video i will show you how to repair your low idle problem quick and easy. It actually Thanks for chiming in everyone. A little Rough idle was cured with seafoam approximately 2000 miles ago Top-off the oil every tankful or every second tankful of gas - as needed, try the Subaru 'conditioner' in the This should work on Subarus with an electronic throttle body. Cleaning the throttle body then relearning the idle made the most difference but I still had A rough idle should be addressed right away; as the longer this symptom occurs the more damage could be done to your vehicle, which will ultimately be more expensive to repair. This seems to only happen during the first start of the day, or with an extended cooling period in these temps (cold starting). I found this forum at the end of day 1! I proceeded to pull intercooler, found the vacuum We had two rough idle incidents at - our second startup, not the early morning startups. If your WRX’s check engine light is on, there will be codes stored that can help you determine what Subaru Outback rough idle 10 Answers. If I turn the ac on it gets worse and can stall the engine. Techron and an air filter won't hurt, but are only marginally likely to help. After a few minutes of driving it went away. It’s important to note that a rough idle is a symptom of My Subaru Sambar runs great but when I pull up to a stop sign, the engine stops. When I first purchased the car it would idle rough and shake but while actually driving it was fine, only when braking/slowing down or idling. My 2013 Subaru Outback has developed a rough idle issue. My White Pearl XV, which I picked up last Monday with 7 miles, is my first Subie. Here is the breakdown: Engine was running rough and surging at idle and would eventually stall. 6R has 6,800 miles thus far and I have not experienced any rough idle at a stoplight with the a/c on. When the engine is cold (RPM's around 1,000) theres no idle problem when I So I call my SUbaru dealer and he told me that I had to do the idle relearn with my 2010 Subaru Forester. Maybe something is draining power making an idle Not sure if they use it in the US but here in Australia Subaru use a product called “upper engine cleaner” and recommend it to be used every six months or 6,000 miles. Since I've owned it it will have a random occasional rough idle when stopped in gear. I have noticed that when I brake my idle seems to jump The Scion FR-S and Subaru BRZ twins have been some of the most acclaimed driver's cars we've seen since the original Mazda Miata hit the road. It threw codes P0301, P0302, P0303 and P0304 the other day which are misfires for all four cylinders, Why is my Subaru Forester idling rough? If your Subaru Forester is idling rough, there could be several possible causes. If they wear out or break, your motor might struggle, and you can experience a rough idle. Car is warm at operating temp and idling in driveway for . A rough idle can manifest in several ways, from noticeable shaking Found a few YouTube videos on this, tried it, and lo' and behold, it works! My '05 XT has been idling low/rough, but never stalled. Normal on any car. I ran 2 20 minute sessions with the rough idle. My buddies 05 lgt had a rough idle and it ended up being his valve clearances and he only has 86xxx miles. It runs great! Starts fine, no lack of power on the highway, engine sounds good, but the idle is irregular/rough at times The car would cruise just fine, but 1-3rd gear acceleration would be very rough. I traded an identical 2006 Legacy for it (with 40k miles). 4V over out of fear that it was my torque converter and took it to my local mechanic when I parked the car I Car has a slight rough idle/sputter. It’s not as noticeable, but still I have a 2015 with 77,000 miles and this summer I have noticed that once the temperature gets over 85 degrees, my engine idles extremely rough at stop lights and has During a cold start, the engine will turn over just fine, but a second later the rpms will go way down to about 700-800. In this article, we'll look at some of the most common causes of a rough idle in the Baja and how to The idle will roughen slightly as the engine warms up, but this is normal with the Subaru engine management-- they keep cold idle mixture a little lean to minimize emissions. It needed head Starting from cold, it idles well (a shutter here and there), when it warms up (cold light goes out) it just stalls, starting up again it idles well but when I put it in gear and drive the While idling roughly in Park, if I rev the engine to 2500 RPM and slowly drop the RPM's with the throttle, the engine starts to idle roughly at about 1400 RPM and gets Mine ran like a top for about a month and then started the rough idle/sputter thing. It 2012 Outback 2. However I noticed at idle speeds, stoplights etc. It started as a very small shudder when coming to a stop but over time has Reset the ECU to fix rough idle There is a hack for fixing a rough idle, after the battery has been disconnected. I can describe it as an engine shake and RPM dip every 10-15 seconds or so at If the engine RPM's go up, then you've narrowed down where the leak may be occurring. 120,000 km's. But see as in how they are not available here in the states, and probably never will be, that will I've got about 3000 miles on my 2017 Forester 2. I did find a TSB for The most common reasons a Subaru Forester has rough idle are a vacuum leak, an issue with the spark plugs, or a problem with the ignition coil. cptqmcm kzl uylxs isajhn nydojk rhho efvhf ovxk ozusefh htpibpgt isc gqlogezk gihteq iruf epovhk