After starting 2008 Suburu Tribeca, revs drop when idling after tapping on accelerator

How do you reset the throttle position sensor on a Subaru?

To reset the Subaru throttle position sensor, you turn on the ignition without your foot on the brake, so the engine doesn’t start. Press the accelerator on the floor for 15 seconds. Release the accelerator, then turn the car off and start the engine and drive.

How do I relearn idle?


What you have to do is circle. The key twice. Before so it's in the off position right you circle the key. Once twice and then you put your foot on the brake. And then you start the car.

What does it mean when the idle goes up and down?

If you’re noticing that your RPMs are constantly going up and down, even when you’re not accelerating, it’s likely that you have a bad idle air control valve. The best way to determine if your idle air control valve is the issue is to check engine light.

Why does my Subaru idle rough?

The most common reasons a Subaru Outback has rough idle are a vacuum leak, an issue with the spark plugs, or a problem with the ignition coil.

How do you test a throttle position sensor on a Subaru?

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Well first we're going to try it at idle and as you can see our voltage is holding steady. Next we're going to tap it and move our throttle plate. You don't want to hit this too hard.

How do you reset the ECU on a Subaru Impreza?

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And then touch them together for like 10 seconds. Without you know going anywhere near the battery for safety sake and then reconnect the battery.

What is throttle relearn?

Electric Idle/Throttle Relearn. To more accurately regulate idle/throttle (or idle motor) operations to control intake air quantity, use the OBD Scanner to initialize the throttle actuation element so that the ECU learning value is returned to the initial status.

How do I do the throttle body relearn procedure?

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You might have to let it run for three minutes and then shut the vehicle off. And then run it again for three minutes. It depends on the type of vehicle.

How do you reset a throttle body?

Leave the key off for a moment, turn the key to the “On” position again, wait 3 seconds, and press the accelerator 5 times in 5 seconds. Wait 7 seconds, and hold the accelerator down. The check engine light should start blinking, continue to hold pedal down until it stops blinking. You can then start the car.

How do you clean the idle air control valve on a Subaru?

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In your intake or you're going to have blow. By a boost.

What RPM should Subaru idle at?

600 to 800 RPM

Typically, the idle speed will be set at a value in the range of 600 to 800 RPM, but the exact value will depend on the number of engine cylinders and whether the vehicle is equipped with a manual or automatic transmission.

Why does my car shake when idling?

Motor mounts: It’s the job of the motor and transmission mounts to dampen vibration. When they break, you’ll feel excessive vibration, especially at idle. You can diagnose this yourself by putting your car in neutral. If the shaking lessens, you very well could have broken mounts.

Why does my car shake after I put gas in it?

This occurs from the purge valve not working properly. It can also be a vent valve issue, but that is not as common. These are part of the EVAP emissions system. If the purge valve is not closed when fueling, it can allow too much fuel vapor to enter the engine which will cause this to occur.

What causes rough idle at low rpm?

The most common cause of rough idle is a vacuum leak or a failed PCV valve. It could also be caused by other air-fuel mixture-related issues like bad fuel injectors, EGR valves, or low compression. In rare cases, it is caused by misfires from a bad spark plug or coil.

Why does my car shake when stopped at a red light?

Motor mounts keep the engine attached to the car. If the vehicle shakes or the engine shudders a lot when stopped at a stoplight, or when parked with the engine idling, it might indicate the motor mounts or transmission mounts are damaged or broken. To see if this is really the problem, shift the car into neutral.