Can you do a throttle body relearn manually?
Can you do a throttle body relearn manually?
However, there are some commonalities within each brand. Most car makers allow you to perform a throttle body relearn procedure with a scan tool or manually. Even if you don’t have a bidirectional scan tool capable of performing the procedure, it’s still a good idea to own a scan tool capable of reading live data.
What happens when you replace the throttle body?
If you replace the throttle body, the PCM won’t know and will continue to use the adaptive settings as if the carbon buildup is still in place. If you don’t do a relearn procedure, the PCM will “hunt” for a new baseline idle.
How long does it take for PCM to relearn idle?
If you don’t do a relearn procedure, the PCM will “hunt” for a new baseline idle. It will eventually learn it on its own, but it may take over a week of driving, during which time you will experience high and low idle speeds and possibly rough idle.
Is there a relearn procedure for throttle body cleaning?
While the cleaning procedure is pretty normal across the board with GM, there are 6 different relearn procedures listed, and a lot that require no relearn at all. Below is the procedure for cleaning. The following pages include a list by name of which proce- dures to use. This is a comprehensive list for the model year 2007.
What’s the throttle body relearn procedure for a Saturn?
Start engine and ensure the engine speed is between 450 to 4,000 RPM. 2. Check that manifold absolute pressure (MAP) is greater than 5 kPa. 3. Check that the mass air flow (MAF) is reading is greater than 2 g/s. 4. Check that the ignition 1 voltage is greater than 10 volts. 5. Idle the engine in PARK for 3 minutes. 6.
How long does it take for GM throttle body to relearn?
If you don’t do a relearn procedure, the PCM will “hunt” for a new baseline idle. It will eventually learn it on its own, but it may take over a week of driving, during which time you will experience high and low idle speeds and possibly rough idle. 1) Start the engine and let it idle in park for 3 minutes.
What happens when the throttle plate is cleaned?
Perform the Throttle Learn Procedure. Refer to Throttle Learn. The engine control module (ECM) learns the idle position of the throttle plate to ensure the cor- rect idle. Anytime the throttle body is cleaned or replaced, the ECM must learn the new throttle position. The idle may be unstable or a DTC may set if the throttle position is not learned.
