1992 JEEP WAGONEER

The Office of Defects Investigation (ODI) has received 80 consumer complaints alleging an engine stall and loss of motive power on model year (MY) 2022 RAM 1500 pickup trucks and 2022 Jeep Wagoneer SUV vehicles. The particular engines in the subject vehicles are equipped with the Fiat Chrysler Autom... otive Group LLC (FCA) 5.7L Hemi eTorque system. The eTorque system is a mild hybrid system that lets the vehicle partially power itself. It accomplishes this by converting the captured energy from the braking system into electricity for the battery pack, which is then used to power a variety of electrical components. ETorque engines replace the alternator with a 48-volt battery-powered belt drive and a motor generator. The motor generator provides extra torque to the crankshaft during gear changes. Simultaneously, the motor generator uses the 48-volt battery pack to increase torque. Many of the complaints state that the vehicle's engine would shut off, often while travelling at slow speed, the vehicle would shift into park and apply the emergency brake. The vehicles were sometimes able to be restarted. In addition, complaints state that the malfunction warning light with the battery fault symbol appeared on the dash.  Many complaints state that a low voltage condition fault is present, sometimes not being able to restart the vehicle. On April 13, 2023, FCA announced recall 23V-265 describing a defect in certain 2021 Ram 1500 vehicles equipped with 5.7L eTorque engines.  The recall described a defect in the powertrain control module software can cause an incorrect fuel mixture condition in the engine, and result in an engine stall. In February of 2024, ODI provided the complaints on the 2022 Ram 1500 and Wagoneer vehicles to FCA. After reviewing the complaints, FCA stated that “the loss of motive power was likely not caused by an over rich fuel condition (as outlined in recall 23V-265), but rather some other cause (e.g., an electrical concern that causes the engine to shut down).” A Preliminary Evaluation has been opened to assess the scope, frequency, root cause(s) and consequences of these loss/stall of motive power incidents.  Additionally, ODI may expand the scope of the subject population during the investigation, if needed. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.Read more

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ANALYSIS OF INFORMATION FROM MANUFACTURER:THE MULTI-POINT INJECTIONSYSTEM (MPI) USED ON THE SUBJECT VEHICLES HAS HAD WIRING HARNESS FAILUREAND FAILURE OF THE CRANK POSITION SENSOR (CPS).BOTH FAILURES HAVE A HIGHFREQUENCY AND ARE THE SUBJECT OF JEEP TASK FORCES.NUMEROUS MODIFICATIONSTO BOTH ITEMS HAV... E BEEN MADE.ANALYSIS:THE STALLING PROBLEM IS SEMI-INTERMITTENT, THAT IS WIRINGHARNESS FAILURE IS MOST LIKELY TO OCCUR UNDER THOSE CONDITIONS WHERE THEHARNESS IS DISTURBED (CORNERING AND ROUGH ROAD).CPS FAILURE CAN OCCUR ANYTIME, BUT FAILURE APPEARS TO BE ACCENTUATED BY HIGH UNDERHOOD TEMPERATURES(EXHAUST MANIFOLD LEAKS, ETC.) AND DISTORTION OF THE CPS HOUSING FROMEXHAUST HEAT DAMAGE OR THERMAL FLEXING.BOTH CONDITIONS RESULT IN NOSIGNAL.STATUS:RECOMMEND OPENING EA AND SENDING A MORE REFINED IR.===Read more

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