i have a 5.8 efi headers just rebuilt the engine first i ever rebuilt i just got it goin runs nice untill the engine get around it operation temp it dies but if i rev it up to around 1500 rmps it will keep running but as soon as i let off it dies what could this be due to hope u smart people can help me being new with efi


Thank Darren

 

Do a search on here for "checking computer codes" or keywords like that.

You need to check what computer codes you're getting as they will indicate the protential problem area.