Today, I was heading into town to get some new alternator brushes; while I was driving down the highway like I usually do. I accelerated hard in second gear and it pulled hard then all of a sudden the pulling stopped completely and it bogged out, then a very very very loud, single backfire went BANG! Scared I threw it into third gear and cautiously continued down the road.


I have a 1989 EFI 5.0L HO. Not sure what this could have been, it's like it completely starved for fuel then the huge backfire, fuel filter is pretty new.

 

Coil failure?
I remember as a kid doing that on purpose - turn the ignition off and coast for a bit, then turn it back on and "bang".

 

Engine never did completely stall though

 

When it fired back up that is when you heard the bang. It was all the unburned fuel in your exhaust system exploding.

 

So most likely something in the ignition went wrong. Thanks guys

 

Exactly !!