misfires when hot

[mystiquesvt]

I can run the car all day and it will be fine. As soon as I try to turn it back on it severly misfires and struggles to stay running. If I let the car cool down for about 4 hrs. and turn it back on, it runs and acts fine. Coil pack has been replaced. Timing? Transistor?

 

[bostonhatcher]

What does your wideband say when you turn it back on and it misfires?

Also, how long does it misfire for?

 

[mystiquesvt]

IT will misfire for forever if I don't ture it off and let it cool for about 4 to 3 hours
Sounds like a WRX. No A/F gauge right now.

 

[mystiquesvt]

Yes, only when i turn it back on after letting it get up to temp