Idle Adjust on 350z

Nissan 350z / Nissan 370z general community discussion forum
free_2_one
Posts: 4
Joined: Wed Feb 27, 2008 3:02 pm

Idle Adjust on 350z

Postby free_2_one » Tue Mar 04, 2008 3:00 pm

Is there a way I can adjust the idle on my z...without taking it into a shop...lmk thanks for your help


JayTech
Posts: 8
Joined: Fri Dec 07, 2007 2:33 pm
Car: 03 350z Performance
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Re: Idle Adjust on 350z (free_2_one)

Postby JayTech » Mon Mar 17, 2008 10:30 am

nope, you cant. you need to take it to a nissan dealer and have them hook up their scanner to it ( Consult 2) and do an idle learn. why do you need to adjust your idle in teh first place?

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simplewon
Posts: 49
Joined: Mon Mar 17, 2008 4:31 pm
Car: 2004 black roadster
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Re: Idle Adjust on 350z (free_2_one)

Postby simplewon » Mon Mar 17, 2008 5:23 pm

You can reset the computers idle detection. It is the last thing after reseting the memory on the computer to default. Here are the details.

350Z ECU Reset>

350Z ECU Resetting Procedures Please read all instructions and be familiar with them before any attempts. A stop watch or an analog clock with a second’s needle will be useful. ECU Resetting Procedures Timing is extremely critical. If it is NOT DONE within the specify time, the ECU will not reset and the Check Engine Light (CEL) will continue to remain ON. A stop watch or an analog clock with a second’s needle will be useful. Operations Procedures 1. Confirm that accelerator pedal is fully released, turn ignition switch “ON” and wait 3 seconds. 2. Repeat the following steps (2a and 2b) procedures quickly five times within 5 seconds. 2a. Fully depress the accelerator pedal (HARD). 2b. Fully release the accelerator pedal. 3. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 10 seconds until the CEL starts blinking. 4. Fully release the accelerator pedal (while the CEL is still blinking) 5. Wait about 10 second. 6. Fully depress the accelerator pedal and keep it for more than 10 seconds. 7. Fully release the accelerator pedal (The CEL light will continue to blink). 8. Turn ignition switch to “OFF” position and now you can start the car. The CEL light should be gone. If the CEL light continues to remain ON, repeat the above steps. Timing is EXTREMELY critical to resetting the ECU.

Accelerator Pedal Release Position Learning Operation Procedure 1. Make sure that the accelerator pedal is fully released. 2. Turn ignition switch “ON” and wait at least 2 seconds. 3. Turn ignition switch “OFF” wait at least 10 seconds. 4. Turn ignition switch “ON” and wait at least 2 seconds. 5. Turn ignition switch “OFF” wait at least 10 seconds. Throttle Valve Closed Position Learning Operation Procedures 1. Make sure that accelerator pedal is fully released. 2. Turn ignition switch is “ON”. 3. Turn ignition switch is “OFF” wait at least 10 seconds. Make sure that the throttle valve moves during above 10 seconds by confirming the operating sound.

Idle Air Volume Learning (Throttle Position Learning) It is better to count the time accurately with a clock. Operation Procedures 1. Perform “Accelerator Pedal Released Position Learning”. 2. Perform “Throttle Valve Closed Position Learning”. 3. Start engine and warm it up to normal operating temperature. 4. Turn ignition switch “OFF” and wait at least 10 seconds. 5. Conform that accelerator pedal is fully released, turn ignition switch “ON” and wait 3 seconds. 6. Repeat the following (steps 7a, 7b) procedures quickly five times within 5 seconds. 7a. Fully depress the accelerator pedal (HARD) 7b. Fully release the accelerator pedal. 8. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 20 seconds until the Check Engine Light (CEL) stops blinking and turned ON. 9. Fully release the accelerator pedal within 3 seconds after the CEL is ON. 10. Start engine and let it idle. 11. Wait 20 seconds. 12. Rev up the engine two or three times and make sure the idle speed and ignition timing are within the specifications.


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