Jeep Wont start, No Fuel, Pump not working. Help. - JeepForum.com
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Unread 03-22-2009, 03:30 PM   #1
bringbackphish
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1990 YJ Wrangler 
 
Join Date: Dec 2008
Location: amityville, ny
Posts: 74
Jeep Wont start, No Fuel, Pump not working. Help.

Ok, my gas guage has been off since i got the jeep. Recently when parked slightly at an angle the jeep doesnt start. Today the jeep stalled when coming to a stop. Now it is not getting any gas, the fuel pump doesnt sound like it is on. Is there a relay that I need to check, Fuses.? Any ideas? Do i need a whole new fuel pump assembly. Thanks, Rob

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Unread 03-22-2009, 04:28 PM   #2
24vtd
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2010 JK Wrangler 
 
Join Date: Mar 2009
Location: indiana
Posts: 31
there is a relay by the battery tray i would start there i just replaced my electric fuel pump today
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Unread 03-22-2009, 04:38 PM   #3
Classicboss1
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1989 YJ Wrangler 
 
Join Date: Jul 2008
Location: Ithaca, New York
Posts: 133
Check the ground wire from the fuel pump to the frame, too much rust or corrosion and it will stop the fuel pump from turning on, I learned the hard way. I would hit a bump or stop fast and I would be stranded, I found out that the ground going to the frame was bad( after I bought a new fuel pump) Replaced the ground wire and all is well. Hope this helps. Good Luck.
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Unread 03-22-2009, 05:10 PM   #4
bringbackphish
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1990 YJ Wrangler 
 
Join Date: Dec 2008
Location: amityville, ny
Posts: 74
Just went out and took another look. The Relays next to the battery tray are not clicking to give the orange wire the 12 volts to power the fuel pump, the pump works when it is given 12 volts, all grounds are good. The relay works in the top position to distrubt the 12 v, but in the bottom set it does not give the 12 v to all the wires. Will a new really just fix it? Does anyone know what the top relay set is for. Thanks
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Unread 09-30-2009, 05:40 PM   #5
Radiohead1231
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1990 YJ Wrangler 
 
Join Date: May 2009
Location: Philadelphia
Posts: 45
take the relay off and give pole 85 a ground and pole 86 12V. if it clicks then the relay is fine and the relay is just not being triggered. poles 85 and 86 switch on your relay....the top pole 87 is whats going to be sent through the bottom pole which is 30 when 85, and 86 are energized. You could also just pop out a relay that you know works like for your headlights or something and plug it in to see if it clicks over. Also im not positive but i know there is a wire on the fuel pump that is only on for couple seconds before the car is on and then when you start the car it stays on i believe. So u may need to someone to check the relays for you while u turn on the key the first few seconds.
If that makes any sense.
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Unread 09-30-2009, 08:15 PM   #6
RebuildRookie
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1988 YJ Wrangler 
 
Join Date: Jun 2009
Location: Central Mississippi
Posts: 852
also check your fusible links on the starter relay solenoid on the firewall. I had one of those blow and the jeep would turn over but not crank. Because of no fuel because of no power to the relays.

If you go with a new relay both the ASD and fuel pump relays r the same. And r around $6 apiece
The fusible link is around $3

I had a stealership look at it when that happened a long time ago and they replaced the fuel pump and it still wouldn't crank. I found the $3 fusible link blown after I towed it home and $300 to replace pump
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