At Mitsubishi Gilles Panizzi recovered to eighth but team-mate Kristian Sohlberg retired from fifth on stage 19 with no drive.
"We still don't know the exact cause of the problem, but up until then things had been going very well," reflected Sohlberg. "The car had been running well and reliably and I was really, really happy with everything. Now I am so, so disappointed."
In the Production Car WRC Gianluigi Galli leads for Mitsubishi, with Daniel Sola second, only 8.1 seconds adrift. Both will be keen to ensure they win the 'class' tomorrow.
In total 56 of the original 69 starters left parc ferme this morning for the second leg, just over 30 were eventually classified at the end of the day's final test.
The final leg tomorrow [Sunday] is the shortest of the rally.
After leaving Villa Carlos Paz at 07.57, competitors repeat the three tests in the Punilla Valley used this afternoon. Then they head high into the Traslasierra mountains, among the lunar-like landscape, to tackle the famous Giulio Césare and El Cóndor tests. Rocky and rough, these two stages will provide the toughest of endings for the surviving competitors. They tackle five stages comprising 84.96km of competition before the finish at Cordoba's soccer stadium.