shaking on startup

[hotdimmes]

Today, I started my car this morning at around 7am. I'm usually parked in a parking garage in the morning but I was outside this time. The weather has changed from being really cold to nice and warm. I have a k&n ru3530. Just wanted to describe all the variables.

So I start the car, and it immediately starts vibrating harshly. The whole car. The idle eventually drops, I rev a few times and it went away. What the heck happened??

 

[AliasJerk]

sounds a lot like a misfire...

weather also does have an adverse effect on cars but I know thats a distant and unclear explanation. I would say just pay attention to it and if it does it again then you probably should start worrying about it.

Is ther ea CEL on? Did anything else happen at the same time?

 

[hotdimmes]

Everything in the car was vibrating unusually. No CEL. First time it's ever happened. I was just curious about it.

 

[todras]

Sounds like a dirty IAC.

 

[hotdimmes]

Your mom's a dirty IAC.

I'll look into it if it ever happens again. It was just really weird.

 

[Matt2kSVT]

Mine has always done that occasionally. Seems to be mostly in colder weather though. It just runs like that for about 10 secs and then all is good. And the exhaust smells a little funny when this happens also.

 

[ancientsanskrit]

Yep, had this problem on several occassions:

1.) Dirty IAC
2.) If you've done the TB fix, the hole may need to be a bit larger. I had the smaller dimension bored in when I was stock. After a few mods, my idle seemed very rough. Bored it larger and now it works like butter.
3.) Misfire. Had a fouled out sp.

Good luck!