WASHINGTON  Without a single Republican vote, President Obama won House approval on Wednesday for an $819 billion economic recovery plan as Congressional Democrats sought to temper their own differences over the enormous package of tax cuts and spending.

As a piece of legislation, the two-year package is among the biggest in history, reflecting a broad view in Congress that urgent fiscal help is needed for an economy in crisis, at a time when the Federal Reserve has already cut interest rates almost to zero.

But the size and substance of the stimulus package remain in dispute, as House Republicans argued that it tilted heavily toward new spending instead of tax cuts.

All but 11 Democrats voted for the plan, and 177 Republicans voted against it. The 244-to-188 vote came a day after Mr. Obama traveled to Capitol Hill to seek Republican backing, if not for the package then on other issues to come.