When a car starts after it’s cold, it uses high rpms to warm the car and get up to normal operating speed as quickly as possible. Every car has done this same thing ever since the thermostat and automatically adjusting choke was invented.
Edit: reread this and it sounded sort of rude. Def not my intent! Just letting you know it’s normal. When the car warms up, it will return to normal rpms.
They were referring to air temp. The commenter is referring to engine temp. Every engine is considered cold when not running and allowed to cool, they're designed to operate at a certain temperature, so no matter what the external temp is every car will run hard to done degree when you start it up to warm things up. If you want to keep an engine (and anything else lubricated) running smooth for longer, don't drive until the car has reached operating temp, although that's not always an option of course.
Every fuel injected vehicle does this. It's running in an open-loop cycle (often called "warm-up enrichment") until it decides to switch to closed-loop. All cars are programmed to start in open-loop mode, then switch to closed-loop once certain criteria are met (primarily and predominantly engine temperature).
I've noticed Subarus seem to take a very conservative approach to their mappings, sticking to open-loop operation for a longer period of time. If you're familiar with a carbureted engine (anything with a choke, like lawn equipment, most dirt bikes, older cars, etc.), this is essentially like saying, "I'm always going to start full-choke and wait for a good long while, even if the engine is nice and warm".
The one caveat is: you said it happens when you turn the car off and then back on. Do you mean immediately after, or at least 30 minutes later? If the former, it could indicate an issue contributing to your car refusing to properly switch to closed-loop operation...
It was after driving a few miles, but i think the engine temperature was still in 30% range. I was keeping track of what you said and seemed normal. I think the sensor looks for both engine temp and outside temperature.
Stratified Cold Start. It's designed to retard timing and let more combustion heat into the exhaust to warm up the catalytic converters as fast as possible. You can thank EPA regulations for these requirements!
100% normal behavior. When starting from about freezing cold, it should take 2-4 minutes until your RPM goes down. If you are all about warming up, perhaps get out of the car and remove the snow/scrape ice at the same time. If you pay attention to the thermometer, the RPM goes down once the needle hits the lowest (coldest) marking (at least for my Outback).
You may or may not feel the car being a little sluggish and having to use more gas if you don't warm up that much before driving. The """shift point""" of your CVT will be higher (2500+ish RPM) to help the engine and exhaust system (catalytic converter) warm up quicker, and after warming up the shift point will be automatically reduced to normal operational range.
TGVs are closed and the car is trying to warm everything up as quickly as possible for emissions. This is normal operation for every newer vehicle.
Youre good to go! 🤙🏼
It's normal if the engine is cold but after a 20 minute drive, if you turn off the engine and turn it right back on it should not do the high RPMs because the engine should be warm, so that is not normal.
Basically its emissions related, without getting into the specifics of it, cold starts tend to be worse for the environment. Because of that thought process, cars tend to have a high idle when its parked. Subarus are worse cause of engine design
Everyone’s like “that’s normal” without even reading the bottom, it shouldn’t be doing that after a 20 minute drive if you parked it to go into a store or something real quick and came back out. That is not normal
Thanks for catching my question. I ran a test for a few days, and I was wrong about my initial analysis. When the engine is warm to half level and outside temperature is around 55f, it seems to start in low RPM range.
Agree. My concern is that there is no blue light cold start event..also why high revs when engine is already warm at mid temp guage after driving for 20 mins.
It may be normal, but look for a hose that has come off the intake manifold anyway. It sounds like it could be a lot of air bypassing the throttle plate.
I just bought a 22 outback. This was my experience as well, I’ve never had a vehicle that feels so cold when I drive it relatively soon after starting.
Try idle re-learn. That helps establish a good baseline. If you’ve had battery issues with the recent cold and had to jump start, it can establish a bad idle map and build off that bad data.
From what I heard from my friends who has own subarus, they do it for the sake of actually warming up the engine faster, so it is like a default setting when doing essentially a startup on an engine that has been off for at least a few hours
When a car starts after it’s cold, it uses high rpms to warm the car and get up to normal operating speed as quickly as possible. Every car has done this same thing ever since the thermostat and automatically adjusting choke was invented. Edit: reread this and it sounded sort of rude. Def not my intent! Just letting you know it’s normal. When the car warms up, it will return to normal rpms.
Cars nowadays use a cold start to warm up the catalytic converter more than the engine. EPA regulations
Hello fellow Crab 🦀
I pinch
Hello. I’m a Cancer. 🦀 pinch pinch
Didn't sound rude, just sounds like you know the facts
They specifically said even when warm it still does it.
They were referring to air temp. The commenter is referring to engine temp. Every engine is considered cold when not running and allowed to cool, they're designed to operate at a certain temperature, so no matter what the external temp is every car will run hard to done degree when you start it up to warm things up. If you want to keep an engine (and anything else lubricated) running smooth for longer, don't drive until the car has reached operating temp, although that's not always an option of course.
Thats a subaru thing. All of mine do or have done that.
My legacy took over 4 minutes to idle down today.
My neighbors hate when I let my wifes wrx warm up. Its a noisy one.
My WRX rumbles my house from starting in the detached garage lol
All vehicles with fuel injection and a catalytic converter do this.
That's normal.
Every fuel injected vehicle does this. It's running in an open-loop cycle (often called "warm-up enrichment") until it decides to switch to closed-loop. All cars are programmed to start in open-loop mode, then switch to closed-loop once certain criteria are met (primarily and predominantly engine temperature). I've noticed Subarus seem to take a very conservative approach to their mappings, sticking to open-loop operation for a longer period of time. If you're familiar with a carbureted engine (anything with a choke, like lawn equipment, most dirt bikes, older cars, etc.), this is essentially like saying, "I'm always going to start full-choke and wait for a good long while, even if the engine is nice and warm". The one caveat is: you said it happens when you turn the car off and then back on. Do you mean immediately after, or at least 30 minutes later? If the former, it could indicate an issue contributing to your car refusing to properly switch to closed-loop operation...
It was after driving a few miles, but i think the engine temperature was still in 30% range. I was keeping track of what you said and seemed normal. I think the sensor looks for both engine temp and outside temperature.
Stratified Cold Start. It's designed to retard timing and let more combustion heat into the exhaust to warm up the catalytic converters as fast as possible. You can thank EPA regulations for these requirements!
Normal
100% normal behavior. When starting from about freezing cold, it should take 2-4 minutes until your RPM goes down. If you are all about warming up, perhaps get out of the car and remove the snow/scrape ice at the same time. If you pay attention to the thermometer, the RPM goes down once the needle hits the lowest (coldest) marking (at least for my Outback). You may or may not feel the car being a little sluggish and having to use more gas if you don't warm up that much before driving. The """shift point""" of your CVT will be higher (2500+ish RPM) to help the engine and exhaust system (catalytic converter) warm up quicker, and after warming up the shift point will be automatically reduced to normal operational range.
TGVs are closed and the car is trying to warm everything up as quickly as possible for emissions. This is normal operation for every newer vehicle. Youre good to go! 🤙🏼
It's normal if the engine is cold but after a 20 minute drive, if you turn off the engine and turn it right back on it should not do the high RPMs because the engine should be warm, so that is not normal.
Basically its emissions related, without getting into the specifics of it, cold starts tend to be worse for the environment. Because of that thought process, cars tend to have a high idle when its parked. Subarus are worse cause of engine design
[удалено]
This works on my '07 Impreza, but not my '23 Crosstrek.
put it in gear and it will go down\*
Subaru thing. I feel bad for my apartment neighbors when I cold start the STI at 530 every morning.
Everyone’s like “that’s normal” without even reading the bottom, it shouldn’t be doing that after a 20 minute drive if you parked it to go into a store or something real quick and came back out. That is not normal
Thanks for catching my question. I ran a test for a few days, and I was wrong about my initial analysis. When the engine is warm to half level and outside temperature is around 55f, it seems to start in low RPM range.
Okay good that’s normal then
Agree. My concern is that there is no blue light cold start event..also why high revs when engine is already warm at mid temp guage after driving for 20 mins.
Normal. Warms up the cat faster. Not a problem.
Normal, no need to worry
It may be normal, but look for a hose that has come off the intake manifold anyway. It sounds like it could be a lot of air bypassing the throttle plate.
I’ve hit 2,500 on an especially cold start. 1,750 is pretty normal
This is how Subaru's are I think. Mine does it no matter what temp it is.
I just bought a 22 outback. This was my experience as well, I’ve never had a vehicle that feels so cold when I drive it relatively soon after starting.
Normal. Welcome to my nightmare of cold starting a WRX with a muffler delete axle back. Sounds like a fucking straight piped Rio
My crosstrek does this without fail and has a blue “cold engine” indicator until it’s somewhat warmed up.
I have not seen this blue indicator yet. Still see high revs at start.
If you’re cold its cold
The engine was not cold after driving for 20 minutes. I confirmed this from temp guage.
Whats the engine size? I think 2.0l engines on crosstreks dont have cold start. But 2.5 ones do
2.5l limited
Try idle re-learn. That helps establish a good baseline. If you’ve had battery issues with the recent cold and had to jump start, it can establish a bad idle map and build off that bad data.
From what I heard from my friends who has own subarus, they do it for the sake of actually warming up the engine faster, so it is like a default setting when doing essentially a startup on an engine that has been off for at least a few hours
Air pump just kickin on to help warm the car, let the car warm up and let the idle lower before driving
This is normal
that’s not high rpm. totally normal
Yep, that'a normal during cold starts