While there is some noise you can hear the engine running , it's nothing intrusive. The specifications on the diesel are this: 215 horsepower at 3800 rpm, 376 lb-ft of torque at a low1600-2800 rpm, and a towing capacity rated at a maximum of 7,400 lbs. Basically this engine makes no sense unless you need the 5. It will prevent oil from getting into pressurized turbo plumbing, which can lead to couplers coming off under boost. Before we address concerns unique to the Jeep Grand Cherokee lets look at the swirl valve system.
Optioning up to the diesel from the base 3. Also gone is the loud rumbling engine; leaving almost no noise in its place. This compares to a similar engine option from the 3. And the diesel-powered Grand Cherokee drives very well. This is where the diesel makes the difference. With the exception of a small badge on the rear hatch, you'd never know this Jeep packed a huge diesel punch while sipping fuel like a tree hugging hybrid.
Unlike spring loaded gate valves, the heavy duty ball valve construction will withstand any engine vibration. Repairing this concern is very timing consuming and fiddly. We even gave the tailpipe a sniff while the Grand Cherokee idled in the parking lot of our office, and there was no soot or the awful eau de diesel that one might smell if you tried the same stunt with an older diesel vehicle. An in depth visual inspection found that the air intake hose was coming apart, as they all do, and was allowing oil to leak onto the swirl valve motor below. Our car looks thoroughly modern, but its linage to the first generation from over fifteen years ago is also instantly recognizable. Usually it's the other way around.
Rock-crawlers demand easy throttle tip in so as not to inadvertently leap over boulders and obstacles, and that long accelerator travel and a high-effort return spring on the accelerator heighten the impression of mass. This mileage beats every other engine offered in the Grand Cherokee line including the 3. The car has also grown ten inches longer and about four inches wider over the three generations. Over time harmful oil will build up inside the turbocharger, intake manifold, intercooler and piping. About the author: Rex Roy is a Detroit-based automotive enthusiast, journalist and author. While the above statistics help build a case for driving a diesel-powered Grand Cherokee, old perceptions die hard. Built to withstand extreme temperatures and harsh environmental factors such as salt, water, oil, chemicals.
The swirl valves are located inside the intake manifold and are operated by a motor which is located between the two manifolds and under the turbo intake pipe. The inherent economy of these lean-running machines--and the intriguing solutions engineers are developing to deal with the emissions woes that lean-running compression ignition brings--captivate me. That issue is failure of the swirl valve motor. Even in the Laredo, it comes bundled with so much gear, that the price premium over a 4. Our Grand Cherokee idles like its in church. I also find it strange that the stump-pulling diesel gets drastically shorter transmission gearing than its peakier gasoline V-8 stablemate. This unit is drenched in motor oil leaked out of the air intake hose.
Perhaps they'll get that sorted out for 2009. On-road the extra torque means the car finds its power fast and makes up for the horsepower difference between the diesel and gas engines. While the engines in all models experience similar problems there is one issue with the Jeep that occurs more frequently than the Mercedes vehicles. The hose usually suffers from failure around the red seal and leaks oil. Finally I took a long look at the pricing, which improved this year when Jeep extended availability to the Laredo series. Full 50-state certification for this engine is coming in 2009 with the introduction of Bluetech exhaust gas treatment technology. The gear changes from the 5-speed automatic are smooth, and once on the highway, the transmission rarely needs to downshift because the engine produces so much torque.
What remains from the old diesel image is the toughness. The diesel is what makes the difference. A typical hose clip can be purchased at any hardware store and will keep the level in the closed and locked position at all times. The engine is so refined that you'll find this same V-6 under the hoods of Mercedes-Benz E-Class sedans and R-Class crossovers. Engine Camshaft Position Sensors are used by the engine control module to synchronize the pulsing of sequential fuel injectors so they match the firing order of the engine. The Controller is engineered from high-quality materials for long-lasting durability. With just the push of a lever, you can easily change your engine oil without the mess! This theoretically delivers a cruising range of over 450 miles from its 22-gallon tank, a number we confirmed in our week's test of the vehicle.
Jeep makes sure the bodywork has good approach and departure angles for traversing hills. . Dorman's sensor electronics are sealed to resist fluid damage and corrosion. The age of the diesel is dawning on the United States, and because of vehicles like this Grand Cherokee, we should run out and enjoy each new day. We didn't have an opportunity to drive the diesel off road, but its torque characteristics seem like they would marry perfectly with rock hopping and trail riding. Upon completion of repairs the Jeep Grand Cherokee ran powerfully and the check engine lamp remained off.
Conclusion We had fun with this Grand Cherokee because we got to throw plenty of things at it including mud, sand, gravel and passengers. The case is not true with the new generation of diesels. I also grew up driving oil-burners. Black instrument inserts and faux wood trim round out the entire package. The first thing you notice is its power off the line—it feels unstoppable. Includes: Black Oil Catch Can 4 O-Ring Clamps Mounting Bracket and Hardware Hoses and Hardware Magnetic PlugTech Specs: Diameter - 3.
In extreme conditions such as off-road, logging and agricultural applications corn fields, brush areas. Our thinking is that the Mercedes-Benz engine electronics aren't compatible with the system existing in the current Grand Cherokees. In fact, the engine is so good that it owns a spot on the respected Ward's list of Ten Best Engines for 2008. Output is a right respectable 215 horsepower and 376 lb-ft--enough to match the tow ratings of the brawny 5. The old saying applies to the 2008 Jeep Grand Cherokee diesel, and here's how: The Grand Cherokee last received a full makeover in 2005. Poor acceleration was also present. A Mishimoto Oil Catch Can will solve all these problems and give you the added security knowing that your performance parts are safe from harmful oil.