Runs perfect but after 20-30 miles will shut off when letting off of the gas. Will crank back up then will continue shut off while driving. Have replaced fuel sensor relay, plate behind distributor cap (plugs don't know the name), full tune up, battery, water pump, other sensors don't know the name of. Any help will be appreciated don't know what else to try.

 

Pop the dist cap, look at the coil (pickup coil) it could have a spot in the insulation causing that

 

Called to price it, $35 am going to try it tomorrow. Thank you very much