Jeep Cherokee 1989 — technical service bulletin
Bulletin RCL/556 · NHTSA communication 39015 · issued Dec 1, 1994
Technical service bulletin
communication type
Engine and Engine Cooling
component
1989
model years
3
vehicle entries
Official summary
It has been determined that certain emission related components of the 1989 jeep equipped with the 2.5l engine, may be susceptible to failure. Failure of these components may cause the vehicle to be in violation of california emissions standards. Hydrocarbons, carbon monoxide and oxides of nitrogen could be above the allowable limits, which were established to protect public health from the dangers of air pollution. To correct this problem, dealers will replace the oxygen sensor, crankcase ventilation hose and if equipped, the transfer case vacuum hose and fuel tank vent boot. In addition, the
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.