No power to fuel pump but power to float sensor
#1
11-29-2009, 07:44 PM
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No power to fuel pump but power to float sensor
I have a 94 dodge ram 5.9 liter v8 2500 and the other day i was running low on gas when my truck just turned off. i figured i pushed my gas limit too much. so i put in gas as i have done before and still would not start but did turn over. replaced the fuel pump with a new one which i didnt need to to do. then after rechecking my relay fuses i realized that i did not have power to the pin 86 terminal when i turned on the ignition switch. then next thing i think is to replace the computer control module. any recommendations?
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11-29-2009, 09:07 PM
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11-29-2009, 09:28 PM
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11-30-2009, 05:52 PM
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According to the Haynes wiring diagram, the ASD and Fuel Pump relays are both fed by the same circuit. Check fuse #9 10Amp. to see if it is good. If you have voltage at pin 86 on the ASD then you have a wiring problem going to the fuel pump relay pin 86.
The wire color shown is light green/black. The PCM computer controls the ground thru pin 85 on each relay. It grounds that part to turn on the relay.
The wire color shown is light green/black. The PCM computer controls the ground thru pin 85 on each relay. It grounds that part to turn on the relay.
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06-14-2010, 12:34 AM
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