Huddersfield reject Akpo Sodje grabbed a goal either side of half-time to twice haul Port Vale back from behind.
The Terriers would have won this game comfortably but for bad misses at key times by Luke Beckett and Gary Taylor-Fletcher.
Striker Sodje, who has seven goals in four matches, had a trial at Huddersfield in 2004-2005, but despite being prolific in the reserves, never impressed then boss Peter Jackson.
Beckett gave the home side the perfect start when he collected Martin McIntosh's long ball, brought it down and finished into the bottom corner with just four minutes gone.
Danny Schofield created what should have been a second eight minutes later, but somehow Beckett prodded wide when unmarked at the far post.
Sodje and 22-goal strike partner Leon Constantine had too much pace for the Huddersfield defence and Sodje showed his speed and finishing ability when he raced through to slot home ten minutes before the break.
Huddersfield could have gone in front again shortly afterwards when the Town players claimed David Mirfin's header from a corner had crossed the line.
As many fans were still retaking their seats for the second half Huddersfield scored again.
Just 15 seconds after the restart young striker John McAliskey, making his first start of the season, produced a moment of magic.
Out of nothing he unleashed an unstoppable shot from fully 25 yards leaving keeper Joe Anyon with no chance.
Taylor-Fletcher should have wrapped it up three minutes later when McAliskey allowed him to pick his spot.
Taylor-Fletcher took his time but saw his shot come back off the inside of the left-hand post and spin to safety.
The Huddersfield defence was caught out when Malvin Kamara crossed to leave Sodje a straight-forward free header for the equaliser.