Ford Motor Co. said it has idled for a week the plant where it makes most of its best-selling Ford F-150 pickups.

A shortage of parts for 3.7-liter V-6 engines and the new 3.5-liter EcoBoost V-6 engines caused the shutdown at the Dearborn, Mich., truck plant, said Ford spokesman Todd Nissen.

The engines are made at a Ford plant in Cleveland.

The 3,000 workers at the Dearborn plant have been temporarily laid off and will get unemployment benefits. Ford kicks in some more money so the workers will get about 95 percent of their take-home pay.

The plant shut on Monday and will reopen on Jan. 31.

Nissen said the parts involved are not faulty.

The issue is a sign that parts suppliers are adjusting production to meet higher demand after lowering capacities during the drop in auto sales since 2008.

It is the second hiccup in production for the F-150 since the 2011 models began shipping to dealers early last month. Lack of parts caused a short shipping delay  in December.

Ford did not reveal the number of trucks involved in either shutdown.

Nissen said auto dealers will have a steady supply of F-150s.

The Ford F-Series has been the most popular vehicle sold in the United States for 34 years straight.

Ford sold 528,349 full-sized pickup trucks last year, up 27.7 percent from 2009.

About two-thirds of Ford’s F-Series pickups are made in Dearborn and the rest at a plant near Kansas City, Mo.