Please check to see if you have any leaks at the injector. You may also have a different leak somewhere else. Then check for any other codes that you might have. You should start from here then see if you have anyother trouble. Be sur you have fixed the injector first, before you contine looking for any other engine trouble. prosess of elimination.
The damage to the Cherokee began in 1492, and continues to this day.
Diagnostic code 43 in the 1997 Jeep Grand Cherokee refers to an issue with the distributor. This often causes the Jeep to stall at operating temperature.
O2 sensor or wiring
catalytic converter circuit
http://www.jedi.com/obiwan/jeep/dtc.html
Diagnostic Readout Box. It is Chrysler'r scan tool.
Map sensor voltage low.
under the dash right hand side.
With a scan tool, or unhooking the battery.
After repair, you use a scan tool or you unhook battery.
The 2000 Jeep Cherokee OBD 2 port is on rear of lower left edge of dash
55 is end of message. If that is the only code you have, then there isn't a problem