If your vehicle is not wanting to turn off when you turn the key off, it is most likely your ignition switch. The ignition switch is basically not touching the correct spots to communicate with the engine that it needs to shut down.
Does it turn over? Does it have fuel, spark and compression?
If the security system on a 1991 Jeep Cherokee will not allow the jeep to start and the key will not turn in the lock, disconnect the battery for a few minutes. Try the key in the lock with the battery disconnected. If it works the first time, reconnect the battery and the system should be reset. If the key does not work in the lock, reconnect the battery and reprogram the key fob.
If the jeep takes a while of turning over to start or if it just won't start at all check to see if it is pumping fuel out. Also turn the key to the on position and see if you can hear the pump kick in.
You need to have sex with it before you start getting personal.....
Check to see if your electric radiator fan is working. With the engine running, turn on your a/c, the electric fan should start up. If it does not, when the engine gets hot during idle, the fan must start up or the engine overheats. You will need to replace the fan.
99 jeep Cherokee Laredo stay running after turn off the ignition switch?
Check the fuel pump to see if it is running.
The most common reason for the XJ Cherokee to turn over and not start running is a faulty Crankshaft Position Sensor (CPS) on the transmission bell housing. Search the Internet or some of the Jeep specific forums, there are instructions for testing the CPS.
Will turn over but will not start
turn on the running lights and pull out on the multi switch.
its your fuel pump
What is it doing? ddus it turn over but just wont start?
sounds like you have a shorted wire somewhere in the circuit. If your jeep has a trailer harness or has rust at the rear of the jeep, look for wires that may be grounding out. Could be easy or a nightmare but this is a good place to start.
Does it turn over? Does it have fuel, spark and compression?
Low of coolant or overheating.
Bad crank position sensor
The AC compressor turns off while the fan keeps running to circulate air and maintain ventilation in the room. This helps prevent the room from becoming stuffy or stagnant, even when the cooling function is not actively running.