Misfire

So I was driving my car and it idles fine but misfires and leans out under load it threw a code for a cylinder 2 and 3 misfire as well as a random/multiple cylinder misfire. Any ideas?

 

Have you checked the spark plugs?

 

first step as Bunny said is always inspect your spark plugs ensure gap is 0.026-0.028", check for leaks in your intake system (maf to throttle body), clean maf sensor and while it's out check the o-ring on it.

 

Okay, I’ll try this tonight

 

I just went through this with my MAP sensor. If you get bogus boost readings on your AP then there's the clue.

 

Also check your ambient air temperature sensor in the bumper for water intrusion or corrosion.

I went through some heavy rain once and my boost readings were off. I disconnected the ambient sensor and the readings went to normal. I think They share the same 5v reference.

 

never seen that sensor before by the way, where can I find it?