UPDATE 1-Chrysler to report flat U.S. Feb sales-source

* Chrysler Feb sales up a few hundred units -source

* Car sales up 38 pct, Ram truck sales down -source

* Chrysler sold 84,050 vehicles in February 2009

DETROIT, March 2 (Reuters) - Chrysler is expected to report flat U.S. sales for February from a year earlier, as improved car sales offset lower truck sales, a source close to the company told Reuters on Tuesday.

The No.3 U.S. automaker sold "a few hundred" more vehicles in February than a year earlier when U.S. sales totaled 84,050 units, the source said, asking not to be identified because the results have yet to be announced by Chrysler.

The results would mark the first time since December 2007 that Chrysler's U.S. monthly sales did not decline from the same month the previous year.

Chrysler representatives declined to comment before the company announces sales results later on Tuesday.

Car sales rose 38 percent in February from a year ago and three of its brands -- Chrysler, Jeep and Dodge -- saw sales growth, the source said.

Sales for its Ram truck brand declined in February, the source said. (Reporting by Soyoung Kim; editing by Gunna Dickson)