engine rpms fluctuates at startup for few seconds

[ree]

Freaky. Mine started doing this 5 days ago. It only does it after sitting hot for a while. It'll do it for about 20-30 seconds and stop. Or a blip on the throttle will make it go away too.

Since a new tank of gas it's been happening less and less, so I suspect that I had some funky gas. I stopped at a discount station I've never been to on the previous tank.

But I say x2 on the MAF and the throttle body. It's easy to do. I had a similar problem on my last vehicle and cleaning these made it go away. Crazy thing is that there's something like 60 things in the SI manuals that are listed as possible causes for this issue. You might as well try the easy ones first.

[OrangeCrush]

Took the air intake box off and cleaned the throttle body. I also sprayed the mass flow intake. I'll find out tomorrow how it behaves. I went for a short test ride today and it seemed fine.

If it doesn't help, I'll pull some codes tomorrow.

Thanks for the help.

Mark

[PARAGON]

Originally Posted by PhilD

I just cleaned my throtrle body with some de-carb. Watch out for the fan, t hurts!

You didn't use the straw, did cha