Chrysler is extending the fuel-tank warranties on 153,817 2006 Chrysler 300, Dodge Charger and Magnum vehicles after complaints of engine stalling at low speeds.

NHTSA announced it has ended its probe into the 2006 Chrysler 300, Dodge Charger and Magnum vehicles equipped with 5.7-liter and 6.1-liter Hemi V8 engines.

Chrysler and its supplier, Stant, have solved the problem and extended the warranty period on 19-gallon fuel tanks to lifetime coverage.

WASHINGTON — Chrysler is extending the fuel-tank warranties on 153,817 2006 Chrysler 300, Dodge Charger and Magnum vehicles after complaints of engine stalling at low speeds, according to the National Highway Traffic Safety Administration.

NHTSA announced it has ended its probe into the 2006 Chrysler 300, Dodge Charger and Magnum vehicles equipped with 5.7-liter and 6.1-liter Hemi V8 engines.

The vehicles were being investigated for fuel vapor recovery system failure following refueling.

NHTSA said there were 299 reports from consumers indicating that the fuel system allowed an overfill condition after refueling and that the engines may stall when the vehicle is stopped or traveling at low speeds.

The problem was traced to the multifunction control valve fuel shutoff float in the 19-gallon tanks. The float can swell into a stuck open position, allowing an overfill condition.

Chrysler and its supplier, Stant, developed new fuel soak test requirements to address the condition and extended the warranty period, according to a Friday posting by NHTSA. The agency oversees vehicle recalls in the U.S.

"The condition that is causing the majority of stalling incidents in the subject vehicles occurs at a stop or low speed and allows the vehicle to be restarted immediately," said NHTSA in its summary of the closed investigation. "The condition represents a low risk to motor vehicle safety and is adequately addressed by Chrysler's extended warranty."

Edmunds says: If you own one of the aforementioned Chrysler vehicles and encounter this condition, be aware that the fuel tanks are now covered by an extended warranty.