Electrical problem
1999 Jeep Cherokee 6 cyl Four Wheel Drive Automatic 151000 miles
----------------------------------------------------------------
I have a 99 Cherokee Sport, truck turns but won't start. No power to Fuel pump, Distributer, Guages not working.Raido, internal and external lights work.All fuses and relays good.engine grounds are clean and attached. I am at a loss for problem.Have unpluged all sensors and switches I could find, and reseated them, traced wiring to find grounds and shorts, none found.

Try swapping the ASD (auto shut down) relay for the a/c relay and see if it will start. Have you used a test light to verify power to the fuel pump and ASD relays?

Swaped them last night no go will use test lite

Power to relay
no power to pump or distributer

Should have more than 1 power in relay socket, 1 ground and the other is trigger from PCM

Only one hot socket in relay plug

Hi corky99,

If relay socket has only 1 power source, check ignition power output to relay.

Hi, How would I go about doing that?

Hi corky99,

I am not very sure of the circuit layout so what I am going to describe might not be the actual circuit but it would give you an idea what to look for.

Relay socket has 4 points, 1 should be battery power, 1 to fuel pump and, another should be to PCM and the last 1 from the ignition switch.

Turn ignition switch on and test if you have power supply to 2 points instead of 1.

Still only one socket is powered. I did replace the ignition switch last year.