Strange noise on startup

[deercrusher]

After I start my car - immediately (1-2) seconds after it's started I hear a strange LOUD fart noise from under the hood. Sounds like it's coming from the driver side of the engine. Like it's holding it's hand under it's armpit and letting one rip. Noise only lasts a second and only does it on a cold start. Car runs fine and does nothing else strange. It however does currently throw codes 551 and 332. Thanks for your advice in advance.

 

[deercrusher]

Think I figured it out

well now my car won't start. It just clicks. So that noise must have been the starter solenoid going bad. I've never heard a noise like that before with a starter going - it sounded like a little miniature air horn under the hood. ONly happened on cold starts and only for like 1 second and just after it was started. Maybe that was the solenoid moving back too slowly and the noise was grinding against the flexplate? My family member mechanics have reassured me that is what the noise was. I guess anythings possible.