Warm start

[Box4two]

My car always starts and idles perfect when cold, or even hot start within 10-15 mins. of turning it off, but if it sits 1-2 hrs, it starts but idles rough for about 30 seconds, then clears up and off we go.
Today after sitting for about an hour it did the same thing, so I thought I would help it along by blipping the throttle to help it, which didn't help, plus my CEL started flashing,
I stopped touching the throttle, it cleared up in about 15 seconds, and the light went off!
Any thoughts on this?

[Jamesp]

Read your codes, you likely have one pending. Flashing CEL = do not run.

[Box4two]

Originally Posted by Jamesp

Read your codes, you likely have one pending. Flashing CEL = do not run.

Even though the light went off?

[NewArt]

You need to read the codes and list them here.

[Box4two]

Just scanned the codes, getting P0300, P0304 and P0305,
But no cel light at the moment and running fine.

[Box4two]

I searched the forum and it all seems to point at misfire, possibly due to coil packs.
Again today its running perfect, but since I don't have past service history, I've decided to order and replace all coil packs, plugs and tubes regardless.

[qwerty]

Could it be related to the secondary air injection?

[NewArt]

Unlikely the SAI but it could be a vacuum leak.

[mikeman]

flashing usually indicates a misfire.. codes make sense.