MATT1

can any one help ! 9/04 grand Cherokee 4.0 daughter pulled into driveway shut truck off. Next day,she tried to start.Cranked but would not start.I sprayed starting fluid in throttle body.It seemed like it wanted to start so I changed the fuel filter. Still cranked but no start. Took line off fuel rail plenty of fuel press. and elect. F.P. is turning on

dave1123

Next is spark. Is it present? Is there power to the injectors? It may be security related or try swapping the ASD relay with a headlamp relay. I'm assuming it's electrical because it was running fine before shutdown.

Welcome to CF. We'll help all we can, however this is an opinion forum. Not all responses may be factual or correct. I'm 68 years young and have been working on my own cars since I was 16. However, my Jeep experience is only about 5 years. One thing. When you find out your problem, please post it. It may help others.

MATT1

Thanks dave 1123, love your quote! Very true.can i check the injectors with a basic test light?

dave1123

They make an LED test light that plugs in and flashes every time that injector is energized. It's very quick and I don't know if a meter will register quick enough. You may catch it with a test light.

I just checked my repair manual. You should have battery voltage with the key on. The PCM controls the grounding of the injector for fuel control. If you have a stethoscope or a piece of hose, you can hear the injector clicking as the engine is cranked. I doubt the PCM went bad, check the fuses. You might want to swap the ASD relay with a headlamp relay to see if that's the cause. The ASD relay is the Auto Shut-Down relay found in the master fuse/relay box under the hood.