If the fuel looks cloudy, either the interior lining of the fuel tank is dissolving into the fuel or a residue left from the failed fuel pump is contaminating the fuel. To test the system, Identifix staff recommends you a take a fuel sample in a clean, clear jar. This is a common occurrence to the 1993-’98 Jeep Grand Cherokees with the 4.0L and 5.2L engines, as well as 1998 models powered with the 5.9L engine. Technicians using Identifix have identified a repeated failure of a new fuel pump that’s due to either a film on the interior of the fuel tank that contaminates the fuel, or from a residue left in the fuel tank from a previously failed fuel pump. In this article, we’ll address some fuel system complaints that have plagued these vehicles. While it is acceptable for Jeep differentials to make some noise, it’s not wise to ignore noises that are more than moderate or if your customer tells you that noise is noticeably getting louder as they rack up the miles.Īnother common issue that puts Jeeps in repair shops is fuel pump related. Grand Cherokees are prone to having some common mechanical problems, and many of you have probably serviced complaints of noisy differentials. In 2005, a 3.7L V6 engine replaced the earlier I6 powerplants, and 5.7 V8 Hemis were made available under the hood, as well as a more powerful 4.7L PowerTech. The second-generation of the Grand Cherokees (1999-2004), still had the 4.0L I6, but the V8 Magnum engine was replaced with a 4.7L PowerTech V8. Over the years, the vehicle saw some changes to both the body and the V8 engine. In fact, the Grand Cherokee 5.2L V8 made both the Car and Driver magazine’s “Ten Best” list, as well as Motor Trend magazine’s “Truck of the Year” for 1993.
Most of the early models (1993-1998) were powered by either an in-line 4.0L six-cylinder engine, or the larger 5.2L and 5.9L V8 Magnum engines.
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