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'92 Isusu/Rodeo 4x4 3.1LV6: fuel pump fuse blown
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Land
Novice
Apr 6, 2015, 3:13 PM
Post #1 of 13
(1332 views)
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'92 Isusu/Rodeo 4x4 3.1LV6: fuel pump fuse blown
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Driving when engine suddenly died, found fuse in panel under hood blown. Fuse is marked (fuel pump). Replaced fuse, blew again as soon as ignition turned on. Checked wiring for any obvious damage. Found none. Replaced fuse again with same result. This model has both an in tank fuel pump and one located midframe. Suspect fuel pump, but am unsure as to which one this fuse is connected. Any advice on this matter appreciated. Thank you. Land.
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Hammer Time
Ultimate Carjunky
/ Moderator
Apr 6, 2015, 3:31 PM
Post #2 of 13
(1327 views)
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Re: '92 Isusu/Rodeo 4x4 3.1LV6: fuel pump fuse blown
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Unplug them one at a time and see if the fuse blows.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Land
Novice
Apr 6, 2015, 8:17 PM
Post #3 of 13
(1316 views)
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Re: '92 Isusu/Rodeo 4x4 3.1LV6: fuel pump fuse blown
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Exactly what I'm in process of doing. Fuse blew with the midframe pump unpluged. Removing rt/rear tire now in order to access connection for in tank pump. Let you know results here shortly. Fuse blew with both pumps unpluged. Just to confirm I diisconnected correct plug, there are two sets of two wires one which goes to upper rt/frt of fuel tank. Other set (one I disconnected) goes to cntr/frt top of tank.
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Hammer Time
Ultimate Carjunky
/ Moderator
Apr 7, 2015, 2:07 AM
Post #4 of 13
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Re: '92 Isusu/Rodeo 4x4 3.1LV6: fuel pump fuse blown
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I'm not sure where you are getting the 2 fuel pump idea. I'm only seeing one in the wiring diagram. It's fed with a light blue wire that turn to red at a connector right before the pump
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
(This post was edited by Hammer Time on Apr 7, 2015, 2:08 AM)
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Land
Novice
Apr 7, 2015, 1:23 PM
Post #5 of 13
(1285 views)
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Re: '92 Isusu/Rodeo 4x4 3.1LV6: fuel pump fuse blown
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Wound up with both pumps unpluged and still blowing the fuse. I see that there is a relay for each fuel pump, could defective relay cause this fuse to blow? Other than that I guess its time to start chaseing wires.
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Land
Novice
Apr 7, 2015, 1:30 PM
Post #6 of 13
(1282 views)
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Re: '92 Isusu/Rodeo 4x4 3.1LV6: fuel pump fuse blown
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There is definatly only one..
(This post was edited by Land on Apr 7, 2015, 1:47 PM)
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Hammer Time
Ultimate Carjunky
/ Moderator
Apr 7, 2015, 2:04 PM
Post #7 of 13
(1273 views)
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Re: '92 Isusu/Rodeo 4x4 3.1LV6: fuel pump fuse blown
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The next step would be to pull the relay
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Land
Novice
Apr 7, 2015, 3:00 PM
Post #8 of 13
(1268 views)
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Re: '92 Isusu/Rodeo 4x4 3.1LV6: fuel pump fuse blown
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Pulled relay #2, fuse blew. Pulled relay#1, fuse did not blow.
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Hammer Time
Ultimate Carjunky
/ Moderator
Apr 7, 2015, 3:11 PM
Post #9 of 13
(1263 views)
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Re: '92 Isusu/Rodeo 4x4 3.1LV6: fuel pump fuse blown
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Try swapping the relay with another one like it from the horn or something unimportant. If swapping it doesn't correct the problem, then you have a short in the wire between the relay and the pump.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
(This post was edited by Hammer Time on Apr 7, 2015, 3:13 PM)
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Land
Novice
Apr 7, 2015, 3:28 PM
Post #10 of 13
(1257 views)
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Re: '92 Isusu/Rodeo 4x4 3.1LV6: fuel pump fuse blown
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Okay. Thank you for your patience sir, so at this point my problem is either this relay or in wiring going to pump correct? Swaping in a different relay cured the problem, fuse did not blow. Used one from heater, question; 30mi into town, will the heater relay get me to town, where I can get the correct relay?
(This post was edited by Land on Apr 7, 2015, 3:36 PM)
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Hammer Time
Ultimate Carjunky
/ Moderator
Apr 7, 2015, 3:48 PM
Post #11 of 13
(1252 views)
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Re: '92 Isusu/Rodeo 4x4 3.1LV6: fuel pump fuse blown
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If it works once, it will continue to work.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Land
Novice
Apr 7, 2015, 4:05 PM
Post #12 of 13
(1247 views)
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Re: '92 Isusu/Rodeo 4x4 3.1LV6: fuel pump fuse blown
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Okay. Once again, Thank you for your help! You guys are awesome.
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Hammer Time
Ultimate Carjunky
/ Moderator
Apr 7, 2015, 4:10 PM
Post #13 of 13
(1246 views)
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Re: '92 Isusu/Rodeo 4x4 3.1LV6: fuel pump fuse blown
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OK, I'm going to close this now as solved. If you need it opened back up just contact me or any Mod by Private message.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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