The latest recall comes amid several efforts by Chrysler to improve its quality and reputation among consumers. It brings the total number of vehicles recalled by Chrysler in the past four months to about 3.3 million -- far more than the company will sell in the United States this year.
Customers will receive a letter in early May explaining that they can take their Jeeps to a local dealer to have a protective shield placed in the engine, said Angela Spencer Ford, a Chrysler spokeswoman.
"This is a preventative measure. If (customers) see a large collection of debris accumulating, they might want to take it in before then," she added.
Chrysler said the recall affects 182,044 Jeep Wranglers, 293,968 Jeep Cherokees and 639,310 Jeep Grand Cherokees.
The latest recall follows a February recall for 1.6 million Jeep Grand Cherokees to fix what hundreds of owners said was a tendency for the vehicles to roll backward when their transmissions appear to be set in "park."