whats up guys im having a problem with my jetta its an 87 and it keeps dieing after i drive for a while. it is draining the battery i can charge it and it will run for a while then starts spitting and sputtering under a load and then dies. i have had the battery checked and its good, i have had the alternator checked and it is also good i recently replaced the voltage regulator that is behind the dash and it is still doing the same thing.

Please give me any suggestions if anyone has any a idea as to what it may be.

Thanks in advance guys