Revs dropping at idle

[THE-350Z-NUT]

Hi, I was wondering if anyone had experienced the revs dropping when sat at idle once the engine is up to temperature? Is this a common fault? Any light shed on this would be great as my warranty is running out and I'm pulling my hair out . Many thanks

[Lexx]

 

A cold engine idles at a higher rpm.

Once the engine has warmed through, the idle will lower.

 

It's not a fault.

[Neilp]

What do you means revs dropping?

 

They should settle with a/c off at 750ish I'm sure.

 

Remeber when stationary she's breathing lots of very hot air and doesn't like it one bit.

[Lexx]

What do you means revs dropping?

 

They should settle with a/c off at 750ish I'm sure.

 

Remeber when stationary she's breathing lots of very hot air and doesn't like it one bit.

 

That's what I thought too Neil.

 

Think it's about 950 when cold on initial start-up. Then drops to 750.

[cmck13]

What do you means revs dropping?

 

They should settle with a/c off at 750ish I'm sure.

 

Remeber when stationary she's breathing lots of very hot air and doesn't like it one bit.

 

That's what I thought too Neil.

 

Think it's about 950 when cold on initial start-up. Then drops to 750.

 

Both correct +1

[THE-350Z-NUT]

The revs drop for a few seconds kinda sounds like the engine is struggling and the engine management light comes on when it feels like it, the fault code reads engine running lean?

[M13KYF]

may require a new MAF sensor, or it may need cleaning, crc sensor cleaner is recommended for the maf