The EGR valve in a Toyota Yaris is located on the front of the engine, on the piping that is in front of the valve cover. It is situated in the engine compartment, under the hood. The EGR valve’s function is to bring exhaust gases back into the engine to help it run better, depending on the load that is put on the engine. If there is a problem with the EGR valve, you may notice that your car is not running well, and it may misfire or stall while idling. Additionally, the engine may not be getting enough air, and a check engine light may illuminate on the dashboard.
Contents
- Can I drive with a bad EGR valve?
- How do you clean a Toyota EGR valve?
- How do you tell if your EGR valve needs to be cleaned or replaced?
- Can I replace my EGR valve myself?
- What are symptoms of bad EGR valve?
- Will a bad EGR valve throw a code?
- Can I still drive my car with a bad EGR valve?
- Where is the EGR valve located?
- Can you still drive with a bad EGR valve?
- Can you clean a EGR valve without removing it from the car?
Can I drive with a bad EGR valve?
Technically you can drive without a working EGR valve.
The role of your EGR valve is to reduce the number of toxic NOx gases in the air, so if it isn’t working quite right, more toxic gases will be released into the air. For this reason, we don’t recommend driving without a working EGR valve for too long.
How do you clean a Toyota EGR valve?
To Clean A Mechanical EGR Valve
Remove the vacuum hose and inspect closely for wear (cracks or weak spots), then clean out the carbon deposits either with a spray can of carburetor cleaner or with a pipe cleaner if the deposits are hardened or compacted.
How do you tell if your EGR valve needs to be cleaned or replaced?
When Do You Know It is Time to Clean?
- Difficulty in starting the engine.
- Rough idle.
- Engine vibration.
- Poor acceleration of the engine (during drive)
- Engine easily running hot.
- Engine ‘ping’ when under load.
- Smell of unburned gas fumes.
- Decrease in gas mileage.
Can I replace my EGR valve myself?
Although it’s possible to complete an EGR valve replacement yourself, due to the need to access the engine chamber, it’s not recommended unless you’re an experienced mechanic.
What are symptoms of bad EGR valve?
What are the symptoms of a failing EGR valve?
- Your engine has a rough idle.
- Your car has poor performance.
- You have increased fuel consumption.
- Your car frequently stalls when idling.
- You can smell fuel.
- Your engine management light stays on.
- Your car produces more emissions.
- You hear knocking noises coming from the engine.
Will a bad EGR valve throw a code?
On late model EGR valves the following fault codes are common: P0400: EGR flow malfunction. P0401: EGR insufficient flow detected. P0402: EGR excessive flow detected.
Can I still drive my car with a bad EGR valve?
Technically you can drive without a working EGR valve.
The role of your EGR valve is to reduce the number of toxic NOx gases in the air, so if it isn’t working quite right, more toxic gases will be released into the air. For this reason, we don’t recommend driving without a working EGR valve for too long.
Where is the EGR valve located?
The valve is typically at the top of the engine’s rear near the firewall on vehicles with a carburetor. To access the valve, you must disconnect the car battery’s negative terminal.
Can you still drive with a bad EGR valve?
Technically you can drive without a working EGR valve.
The role of your EGR valve is to reduce the number of toxic NOx gases in the air, so if it isn’t working quite right, more toxic gases will be released into the air. For this reason, we don’t recommend driving without a working EGR valve for too long.
Can you clean a EGR valve without removing it from the car?
The best way to clean the EGR valve without removing it is by spraying a cleaner into it with the engine running at 2,000 rpm. Be careful not to spray too heavily at once.
