Jeep Grand Cherokee Forum banner
1 - 11 of 23 Posts

Drrm80

· Registered
Joined
·
18 Posts
Discussion starter · #1 ·
Well about 4 weeks ago i bought a 93 GC with a 4.0 in it for 200$ off a friend who just got another jeep. This jeep ran fine when he had it but hasnt been started since the summer. So i put some gas in it and it start right up for me. I then drove it home and it drove fine. Parked it in my yard and havent touched it since then. I goto start it today and nothing. just keeps cranking. I put a new battery in it, it looks like it has a new coil in it, i put a new rotor and cap in it today, new plug wires. Im gonna put plugs in it tommarow and a fuel filter. But i still dont know why it started then and wont start now, espcially since i havent touched it since then. I turn the Key on and i cant hear the humming....and i poked the valve on the fuel rail and no fuel came out. So im thinking my fuel pump is done. Im gonna see if the pumps getting power tommmarow then im gponna , put 12v manually to the pump and see if it goes on. Anything else i should check? 1 more question is i have a 1992 Cherokee with a 4.0 , can i put that fuel pump into my Grand Cherokee ? or its not the same?
 
Discussion starter · #8 ·
well i put gas in it, the only fuse i know of is the Fuel Pump relay and its still good....But the pump was working when i drove it to my house and i havent done anything since.....could there be something keepin the fuel pump off....maybe a alarm or somethin...my keyfob is messed up but i just use the door locks to shut it off. Fuel pumps are pretty pricey just trying to find an alternative problem first
 
Discussion starter · #11 ·
well heres the update, i get about 12.v to the coil and the coil had about 1.5 ohms of resistance on the connector side and about 11500 ohms from one side of the connector to the output. but the coil. i tested the Crankshaft Postion sensor and i get infinite ohms. I tested to see how much voltage i get to the pump at the conenctor and its 5.77 volts. i havent sent 12v to the pump yet to see if it works... but im still not getting a spark because i hooked a plug to the wire and held it near a ground and we got no sparkage.
 
Discussion starter · #16 ·
posting on another forum ive come to the concusion it might be a PCM or PCM fuse because No spark , fuel pump wont turn on....and the Check engine light DOESNT even blink once when i turn into the on postion or try to start it
 
1 - 11 of 23 Posts