The second I-League team from Meghalaya fired two goals in the first half to put themselves in a dominant position while the visitors reduced the margin before the break at the J N stadium.
The opener came from David Ngaite in the second minute of the match. Ngaite converted a free kick on the right flank with his head.
Ngaite doubled the lead in the 27th minute when he was unmarked inside the box while Lalnunpuia made his way past two defenders.
The trio kept Salgaocar keeper Karanjit Singh busy at the back even as Lalnunpuia's powerful shot from a 30 yard in the 31st minute of the match went straight into his hands.
More From This Section
Cloud Gnakpa header from a short corner in the 39th minute earned the visitors their solitary goal in the first half to give the visiting team a much-needed push.
Returning after the lemon break, Salgaocar changed their tactics and kept on sending long range drops at the box to test Rangdajied keeper Shambu Mistry.
Substitute Gilbert Oliveira's shot in the 90th minute finally paid off for the visitors as his powerful right footer sent the home custodian into the air while missing a save to level the score 2-2.
After today's match, the host levelled their points with former I-League champion Churchill Brothers with three points each after 8 and 7 matches respectively.
Both are in the relegation zone with each putting in five goals while Rangdajied conceding 17 goals and Churchill Brothers 10.