This is a generic code, which indicates that it has the same meaning for the Subaru WRX as it would any other vehicle.

i thought the psi would go down when i revved it but it goes up. If the converter doesn’t unlock, then the engine will stall much like a manual vehicle does when it doesn’t have enough speed to carry a gear. Check the fuel filter. At cold start it reads 80-100psi depending on how cold it is. Good luck! This is typically noticed under heavy engine load. If your Subaru WRX’s engine timing is off, it’s going to stall out, misfire, and altogether not run properly. Is it ok to drive off before the idle comes down to "normal"? Or he is rolling down the street in his new slammed ride vaping out the window, enjoying the tow truck ride. Before troubleshooting any automotive issue, including stalling issues with the WRX, make sure that you check the vehicles trouble codes with an OBD2 scanner. In the end, you will have a smoother running engine, get better fuel economy and even get rid of that misfire or check engine light. You can also use it to check the fuel pressure reading as you drive. The fuel pressure regulator is responsible for making sure that the amount of fuel pressure that reaches the fuel rail is at a constant level (which will be less than pushed by the fuel pump). If the manual fuel pressure reading is normal, then you know that you’ve got an issue with the fuel pressure sensor (or the wiring going to and from it). Here’s a great YouTube video from EricTheCarGuy. 30psi@ idle … P0191 can be a difficult code to track down, but should not be ignored. I have a question about the idle range of my 2015 Subaru WRX after it has been sitting overnight. If it goes bad, it can restrict the flow of fuel to the point that P0191 can be thrown. or is it an issue with my oil pressure? All modern torque converters “lock”. It can really help narrow down what you need to do.

What about vac pressure on the boost gauge what should that be at? Good luck. These codes are vital to diagnosis. Get a fuel pressure gauge or borrow one and check the fuel pressure. Idle with a warm engine, it's at 20 psi. If it goes bad (or if the fuel pressure really is out of the normal range) P0191 can and will appear. Here are some of the issues that cause the WRX to stall out. Bad Fuel Injectors– If the fuel injection system is allowing too much or too little fuel into the combustion chamber, than your WRX will stall out. We invite you to join our Subaru Impreza WRX and STi community to discuss engine mods, builds, detailing, and more. Remember, a vehicle needs air, fuel, and spark to run. But, keep in mind, the coolant will come to temperature before the oil, so do not hoon it straight out of the driveway. Wiring issues can cause P0191 to be thrown. That's the same range my 2013 wrx idles at. This eliminates some driveline power loss and improves fuel mileage. My 15 limited does the same thing, sometimes when its cold in the morning it will do it for about 1 and 1/2 minutes, other times may be 30 seconds are less depending on how long the car has been sitting. Here are the most common symptoms of P0191: If there isn’t enough fuel pressure getting to the fuel injectors, the engine may stall out or hesitate in certain situations. If it looks bad, it may need to be replaced. Without a reliable reading from the fuel pressure sensor, your WRX may end up with the wrong air/fuel mixture. When P0191 is present, there typically are noticeable symptoms. A dirty throttle body may not trigger the check engine light.

Here are some of the more common causes of an engine timing problem: Your Subaru WRX uses a series of complex sensors to report what is going on to the ECU. I installed an prosport electronic oil pressure gauge. Oil pressure was taken after cars oil was up to normal operating temp.

Here are the facts: I just picked up a '15 Subaru WRX Limited with CVT and it seemed as though the idle speed - the car is started cold (~72 degree ambient temperature in the garage) - is relatively high (1,500 - 1,800 RPM) and remains there until I start driving. A good scanner can help you look at the conditions that were present when the code was set. When one of them goes wrong, it can lead to stalling for sure. There are many other sensors that can cause your WRX to stall.

If there is anything that you would like to add, please leave a comment below. My '15 WRX 6sp hangs out around 1500rpm for several minutes until it finally calms down. The 2015 Subaru WRX has 4 NHTSA complaints for the fuel/propulsion system at 38,975 miles average. It indicates that the fuel rail pressure sensor is receiving a signal that is outside of its normal range. You’d notice hesitation and stalling as the fuel pump struggles to keep up with the demands of the engine. My 2015 Forester XT only at 43k miles and its summer throughout the year around 90F Last few weeks my cold … 2018 NUTUP STI / 2015 Buckeye Boxer WRX / 2003 Hammerdown Wagon WRX. Drivability is usually affected. Air Fuel Mixture– If the air/fuel mixture is off, your WRX can stall out. A dirty throttle body can lead to stalling in your WRX. [slap] at an idle it stays at 22psi, when i rev it goes up to 35-39psi. Trouble codes are always a great place to start diagnosing problems on today’s modern computer controlled vehicles. First; I think high idle is normal until system gets warm enough for O2 sensor to start working. Published on Mar 28, 2015 Oil Pressure taken from right under alternator where oil pressure sensor is. and it reads opposite of what i assumed. on how to clean a throttle body. If it runs too lean, you’re likely to have p0171 accompany P0191. If there is anything that you would like to add, please drop a comment. Or, right after heavy engine load when the fuel pressure isn’t recovered enough for a proper idle. Please, please have your trouble codes read if there is a check engine light on at all. Here are the most common issues that cause P0191 to be thrown: The fuel pressure sensor is responsible for telling your WRX’s ECM/PCM what the actual fuel pressure of the vehicle is. Subaru WRX: Bad Fuel Pressure Regulator Diagnosis.

So, if your stalling happens when coming to a stop, and the check engine light is on, it may be worth taking a look at it. Without them, you are in the dark. They are often specific enough to get you all the way to the problem, or pretty darn near. If the reading seems off, you’ll need to manually check the fuel pressure. The ECU then uses this information to adjust the timing, air fuel mixture, and more. If the fuel pressure at the injectors is inconsistent, it’ll be really hard for your WRX to maintain a steady idle speed. Pretty much agreeing with all input. Stalls can happen at any time, and it can be incredibly jarring when it does happen.

Doing so very well could leave your Subaru WRX stranded. In regards to your second questions I recently got a Subaru wrx with the cvt and today when I sat in the car after it warmed up, the idle went to that and I also got the feeling it would stall.

A bad fuel pump would act exactly like a bad fuel pressure regulator. One of the most common issues your Subaru WRX is likely to develop is a stalling problem.

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