2000 Jeep Grand Cherokee Limited Sport Utility 4-door 4.7l on 2040-cars

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FCA's Pentastar V6 gets more power, efficiency for 2016

Already a vital member of FCA's powertrain lineup, the 3.6-liter Pentastar V6 is receiving major efficiency improvements for 2016. Thanks to a massive amount of new tech attached to the mill, fuel economy is up six percent, and torque below 3,000 rpm jumps nearly 15 percent. The updates arrive first in the 2016 Jeep Grand Cherokee, but they should proliferate to other models eventually. At least in the Grand Cherokee, the tweaks push power up five horsepower to 295 ponies. FCA's engineers went through the Pentastar from top to bottom to eke out as much efficiency as possible. For example, there's now a two-speed variable-valve lift system that can run in low- or high-lift modes. This upgrade is responsible for 2.7-percent better economy, the company claims. A new intake manifold with longer runners and updated variable-valve times also helps boost the torque output. Further improvements come from pushing the compression ratio to 11.3:1, from 10.2:1 before. Perhaps most impressive is that despite all of the innovations, the latest Pentastar actually weighs four pounds less than the current version. Beyond the Pentastar improvements, all of the FCA US gasoline engines, except for the Viper's 8.4-liter V10, will be E15-compatible for 2016. The company says that it wants to be ready for the higher ethanol content fuel's greater use in the near future.

Chrysler defies NHTSA, says it won't recall 2.7M Jeep Grand Cherokee, Liberty models

Facing a possible recall totaling around 2.7 million of its most popular SUVs, Chrysler remains insistent that the 1993-2004 Jeep Grand Cherokee and 2002-2007 Jeep Liberty are safe vehicles. This comes on the heels of a recall request from the National Highway Traffic Safety Administration for these two models due to fuel tanks mounted behind the rear axle, which could possibly be ruptured during severe rear-end collisions, leading to an increased risk of fire. In response to the allegations, Chrysler says that it does not agree with NHTSA nor does it plan on recalling either vehicle.
Chrysler said both SUVs "met and exceeded" the requirements for fuel-system integrity, and cooperated fully with NHTSA since the investigation was opened in 2010. While 15 deaths and 46 injuries have been reported from fires caused by rear-end collisions on these models, Chrysler is claiming that the vast majority of incidents cited by NHTSA were "high-energy crashes," including one where a stopped Grand Cherokee was rear-ended by a tractor trailer going 65 miles per hour.
The automaker wraps up by saying "NHTSA seems to be holding Chrysler Group to a new standard for fuel tank integrity that does not exist now and did not exist when the Jeep vehicles were manufactured." Scroll down for Chrysler's official response to NHTSA, but we're pretty sure this isn't the last we've heard on this issue.

Prosecutors indict three FCA employees in alleged emissions-cheating case

Federal prosecutors indicted three Fiat Chrysler Automobiles (FCA, now Stellantis) employees as part of an investigation into alleged emissions cheating. Charges unsealed on April 20, 2021, accuse the defendants of helping rig the emissions control system fitted to the 3.0-liter turbodiesel V6 used in some models during the 2010s. Prosecutors claim Emanuele Palma, Sergio Pasini, and Gianluca Sabbioni played a determining role in developing a defeat device that allowed the V6 to obtain certification from the Environmental Protection Agency (EPA) while polluting too much in normal driving conditions. Jeep and Ram began making the engine available in the Grand Cherokee and the 1500, respectively, in 2014, but the charges state plans to game the EPA started in 2011. Palma, Pasini, and Sabbioni knowingly mislead federal regulators, the charges claim; they called it "cycle beating," according to The Detroit News. While the three men were part of FCA's research and development department, they started the project while working for an Italian supplier named VM Motori, which FCA purchased in 2013. Pasini and Sabbioni are each charged with one count of conspiracy to defraud the United States and to violate the Clean Air Act, one count of conspiracy to commit wire fraud, and six counts of violating the Clean Air Act. They could spend several years behind bars if they're found guilty. Both are currently in their home country of Italy. Palma's legal troubles are more serious. He was charged with several counts in September 2019, though four wire fraud charges were dropped in November 2020. He lives in Bloomfield Hills, a city located on the far outskirts of Detroit. Prosecutors claim motorists spent over $4 billion on over 100,000 trucks and SUVs fitted with the non-compliant engine between January 2013 and September 2017. FCA has already agreed to pay $800 million to resolve civil claims from the Justice Department, state officials and customers, though it significantly has not admitted guilt. It stressed that "it did not engage in any deliberate scheme to install defeat devices to cheat emissions tests."