Misfire

[Bigiron02]

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?

 

[Easter Bunny]

Have you checked the spark plugs?

 

[Awafrican]

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.

 

[Bigiron02]

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

 

[iguardflorida]

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

 

[L337TurboZ]

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.

 

[iguardflorida]

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?

 

[Awafrican]

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