What is EGR in Subaru?
The EGR (Exhaust Gas Recirculation) valve helps lower the car’s exhaust emissions (gases from the tailpipe). It recirculates the portion of the gasses coming out of the engine by putting in back into the intake manifold, where the engine can burn it again, thereby reducing the emissions.
Can a car run without an EGR valve?
As per my research and going through the threads on EGR valves its OK to run without EGR. Yes it might affect the environment but no harm to engine as such. there are people who are running without EGR for more than 50k km. As time goes by, the EGR valve may cause certain malfunctions in your diesel vehicle.
What happens if you unplug EGR valve?
If you unplug it, while the truck is off, then the EGR will stay closed. That said (so that this post doesn’t get deleted), if you do that you’re breaking the law.
What happens when EGR solenoid goes bad?
If the EGR solenoid fails it can disable the EGR system from recirculating exhaust gases. For certain engines this can cause a large increase in cylinder and exhaust gas temperatures. Excessively high cylinder temperatures can cause engine ping and knock, which can lead to serious engine damage if left unattended.
Can bad EGR cause rough idle?
Over time, the EGR valve can fail in the open or closed position. An EGR valve that is stuck open can result in a fuel-air mixture that is too lean. This can cause a rough idle. A faulty EGR valve may also cause your Check Engine light to come on, in which case a code reader may reveal the culprit.
Does removing EGR increase power?
EGR delete without a remap of the ECU will give no performance benefit but will increase emissions. But it does simplify things greatly. A remap is unlikely to give collossal gains in power, but there will be some.
What happens when the EGR goes bad in a Subaru?
At idle and deceleration, the EGR closes. If the EGR is faulty by sticking open, the car will idle poor. If the EGR doesn’t open at all, you wouldn’t notice that its not operating but the computer will because it judges EGR operation on pressure feedback. Unless the valve is partially open at idle, your problem lies elsewhere.
What makes a Subaru Outback go bad at idle?
Unless the valve is partially open at idle, your problem lies elsewhere. Could be air metering from the MAF, dirty air filter, fuel filter, TPS adjustment, IAC valve sticking on the low side (does it idle low?), AF sensor (s), battery, grounding, or PCV valve. These are just a few things.
What kind of stutter does a Subaru Outback have?
Hi all, my ’04 OBW, 164k miles, has developed an annoying stutter. Starts after it’s warm, noticeable under light to medium throttle,at any speed. Feels like a mis-fire, but throws no codes.