Repeat offender SCV!!

[gbu]

Has anyone had to replace the SCV more than once? Idle is starting to play up again which I thought had been fixed. O2 sensor? MAF?

 

[Old.Tony]

Don't replace it, try cleaning it.

If that works, then I'd say either the fuel filter isn't perfect, or your fuel supplier may have issues.

O2 sensor should trigger a code if it's completely faulty. If it's misreading O2 levels it will make minor adjustments to the fuel but more than likely will cause DPF issues.

MAFS is always a candidate for issues, especially if it's behind a non-paper filter. Easy to clean, just be careful with it!

 

[ST-R]

Mine had similar idle issues. I ran Chemtech diesel cleaner.. fixed it completely.. try a cleaner first.

Regards

Greg

 

[gbu]

I usually run Fuel Doctor through it. Got it in at Nissan this morning for a service, see if they have any ideas. Then I can try the MAF and cleaning the SCV. Getting tired of this navara.