Londoners Palace came into the encounter on the back of a rousing 3-0 win over Southampton.
A last-gasp Fraizer Campbell header brought Crystal Palace a point in a see-saw 3-3 draw at fellow Premier League strugglers Hull on Saturday.
Londoners Palace came into the encounter on the back of a rousing 3-0 win over Southampton which snapped a six-match Premier League losing streak.
But they were on the brink of a damaging loss which would have left them on the brink of the bottom five before Campbell nodded home from a Wilfried Zaha cross to keep them three points above the bottom three.
The dropped points left Hull firmly in the drop zone just a point clear of tailenders Sunderland as they missed out on a win bonus which would have seen them go above out of sorts Leicester.
Mike Phelan's hosts took a 27th-minute lead from the penalty spot from Robert Snodgrass after he was fouled by Scott Dann in the box.
Palace fought back and levelled three minutes after the break after Snodgrass himself conceded a spot-kick converted by Christian Benteke, twice on target in the win over Southampton.
Palace welcomed back midfielder Yohan Cabaye from suspension and the Frenchman was pulling the strings in midfield as the visitors stepped things up, Zaha shooting them ahead on 70 minutes following a corner.
But the lead lasted barely 90 seconds as Adama Diomande drove home for 2-2 after Harry Maguire fed him.
With 12 minutes remaining Hull were back in front as Snodgrass provided an assist for Jake Livermore.
But late Palace pressure born of desperation saw Campbell, a former Hull loanee who helped the Tigers into the top flight seven seasons ago, come to the rescue as Zaha jinked his way through before sending over a tantalising cross which the one-cap England striker buried.
The comeback eased the pressure on Palace manager Alan Pardew, who was taking charge of his 300th Premier League game.
Three years ago Pardew, then at Newcastle, was sanctioned after pushing his head into the face of Hull's David Meyler.
On this occasion he left the venue with more to cheer as Palace avoided a repeat of their demoralising 5-4 loss at fellow relegation candidates Swansea last month when they led going into injury time.
The South Londoners went into that game with the worst form across 2016 in the whole of the English league structure, having garnered just 0.71 average points per game.