Engine Performance Problems Due to Residue on Throttle Bodies on Jeep Cherokee

The throttle body may accumulate an oily, black residue in the bore and on the throttle plate causing hard starting or possibly stalling when coming to a stop. The throttle body should be cleaned during regular maintenance but do not spray cleaners directly on or at the throttle position sensor (TPS) as this can damage the sensor.

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Average mileage: 136,500 (120,000–153,000)
12 model years affected: 1990, 1991, 1992, 1993, more1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
14 people reported this problem
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2000 Jeep Cherokee 120,000 mi,
in cold weather, mainly, choke cleaner is needed to let the engine idle correctly without stalling.