Short answer. Yes. If your managing partner was named in the articles of partnership, they may carry out ordinary acts of administration even if the other partners object, as long as they are not acting in bad faith. Their authority is not automatically canceled by disagreement among the other partners.
What the law says
The partner who has been appointed manager in the articles of partnership may execute all acts of administration despite the opposition of his partners, unless he should act in bad faith
Civil Code, Article 1800 — Powers of a Managing Partner. Read the full provision →
Why the objection alone does not stop him
When a partner is named manager directly in the articles of partnership, that appointment is treated as part of the partnership contract itself, not a favor the other partners can withdraw on a whim. The law lets him keep executing ordinary acts of administration even while the others object, because the partnership needs someone who can actually run day-to-day affairs without every decision being frozen by disagreement. The objection has to be more than discomfort with his judgment call — it matters only if it points to bad faith.
The one thing that changes everything: bad faith
The protection is not unconditional. The same article that shields the managing partner from ordinary opposition strips that shield away "unless he should act in bad faith." Acting in bad faith means using the management position to benefit himself, harm the partnership, or push through a transaction he knows is not in the partnership's interest. Once bad faith is genuinely in the picture, the objecting partners are on firmer ground to resist or challenge the act.
Revoking the appointment is a separate, harder question
Objecting to a specific act is not the same as removing him as manager. Where the management was written into the articles of partnership, the law requires the vote of the partners representing the controlling interest to revoke that power, and even then only for just or lawful cause. A minority of partners who simply disagree with him cannot force him out on their own; they need enough combined interest to meet that threshold, plus a real cause the law would recognize.
A different rule if he was appointed later
The article draws a line between a manager named in the original articles of partnership and one appointed afterward, separately from that founding document. A power granted after the partnership was already constituted may be revoked at any time, without needing to show bad faith or gather a controlling-interest vote. If your managing partner's authority came from a later agreement rather than the original articles, the partners have considerably more room to pull that authority back.