Spark Plug - ECU learning

[tubbedz]

I'm going to attempt to change my spark glugs this weekend. In the process the throttle body needs to be removed. Because it is a "drive by wire" throttle body will I need to perform the following: 1)ECU Reset 2) Acc Pedal Release Position Learning 3)Throttle Valve Closed Position Learning

The last time I removed the throttle body for cleaning, a CEL popped up......took it to the dealer.....they had to Relearn the idle RPM...and reflash the ECU and upgrade the software.

If I have to go through this again......I might as well have the dealer install the spark plugs. Any one try this?????

[tollboothwilley]

This is not difficult to do.

I just changed spark plugs on my friends 350z, didnt need to remove the TB.

Took just over an hour.

here are the reset procedures: timing is critical. Use a stopwatch. I use a video on my phone for the timing.http://www.technosquareinc.com/350reset.htm

[tubbedz]

This is not difficult to do.

I just changed spark plugs on my friends 350z, didnt need to remove the TB.

Took just over an hour.

here are the reset procedures: timing is critical. Use a stopwatch. I use a video on my phone for the timing.http://www.technosquareinc.com/350reset.htm

On a Murano it is difficult!! The top collector manifold, the bottom collector manifold, and the throttle body does need to be removed as these three items reside over the three coils on the Right bank of the engine. There is no space. Furthermore, the right bank of the engine is next to the firewall, which in turn you also need to remove the plastic cowl area above the collectors. Before removing the plastic cowl you also need to remove the wipers.

On a 350z and a G35 the engine is situated differently. The collector does not sit directly above the Right bank and over the coils.

So....does anyone with know if I will need to perform ECU learning???

[tubbedz]

Also there is a TSB for 2004-2005 Murano's that if the battery is unhooked for over an hour, the ECU will need to "relearn" again.

[tubbedz]

OK....I got my hands on a Nissan Murano Repair Manual and I read it thoroughly. Since so many people responded to the Post?????

1)In the manual it states that anytime the throttle body Electric Throttle Control Actuator is unplugged you need to perform the "Throttle Valve Closed Position Learning" procedure.

2)If the Throttle Body control actuator is replaced, you need to perform the "Idle Air Volume Learning" procedure and the "Throttle Valve Closed Position Learning".

So that means don't unplug it unless you have too.

Also, I'm not sure that if the battery is disconected these prodecures may also need to be performed.(I need to read the manual some more).I'm also assuming that any other Nissan vehicle equipped with the VQ35DE "drive by wire" throttle body must do this also.

Boy....Nissan makes it so difficult to maintain......