Hi, I have a Sierra 2.0 Dohc EFI (catalyst)
When I start it cold it will go perfectly 30min, and then it dies and wont start again!
When the problem is there, there is no spark from the ignition coil.. (center kable)
Hmm! The I thought that it might be the little ignitionmodule located underneth the coil (I chanced it last year due to it failing)
But it chanced nothing.
I then tried changing the coil itself = chanced nothing
When it gets cold again, aprox 20min it start just fine/normal and runs ditto....20-30min and dies again.
When the fault appears I'v tried to put on a nother (cold) ignitionmodule with no chance what so ever.
I checked the signal from the TPS and other sensors, and they are fine

SO..WHAT is it that gets warm and fail??? Any help will be highly appreciated