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Gas pump will not turn on. Have a partial wiring diagram, but does not show the pump.

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Does a 1999 Isuzu has a reset fuel button? Where would it be located if it does?

It doesn't have one . 1999 Isuzu , what model ! Check the PCM/ECM main relay . In fuse box . Check don't just replace it . Videos on youtube showing how to test relays an control an load side of relay. Also check ,test fuel pump electrical circuit . Again videos on youtube showing how . Also watch basic automotive electrical testing video's , how to read a wiring diagram , an how to use a DVOM - digital volt ohm meter . If you want to fix your car learn how to do it . Free wiring diagrams at . Also check for ignition spark , if there is no spark the PCM/ECM will not turn on the fuel pump . PCM/ECM needs an input from the crankshaft position sensor to energize the fuel pump relay .

Oct 25, 2016 | Isuzu Cars & Trucks

1 Answer

No gauges

Click on the link
This is a partial, should be enough to show voltage and ground.

May 31, 2017 | 1994 Ford Explorer Limited

1 Answer

Yea im not getting power in the 2,3,4,5,6 position in the underdash fuse box and im also getting no power in the 2 relays witch i think or in the hi beam and low beam place in the engine car not getting...

The only power in the inertia switch is when the fuel pump wire has power-and only when the pump is demanded to run-during the initial pressurizing of fuel lines (for about 2 seconds) when key is turned to ON, during cranking, and during running of the engine.
Power to the fuse block will come from the power distribution box-the fuse/relay block-under the hood. Check all your maxi fuses. One of them will supply power to the fuses, or if not them, then there will be a fusible link just off the battery that distributes power to various circuits, including the fuse box. But first check the maxi fuses. Same for the relays: the power feed for them will also be a power distributor- a maxi fuse or fusible link.
If a wiring diagram would help you, register for free at, listing make, model, year, and engine size. Car specific wiring diagrams and repair procedures are then available to you. Look under repair guides, may have to look around for wiring diagrams, sometimes under chassis electrical,
sometimes a stand alone entry, but it's there. Also a component location guide-it may show where or what those two relays are. The wiring diagram may show, should show, how power gets directed to the fuse box. Good luck.

Sep 24, 2013 | 2001 Ford Taurus

1 Answer

Have a 2000 toyota tundra; when taking off gas tank, tank fell and pulled color wires from 5 pin connector on fuel pump. help to rewire. the connector is number 1, 2, 3, 5,4 but the wires are different...

A $20 service manual should include wiring diagrams which will show you color codes. When you buy a manual, make sure it has diagrams. murf427

Aug 30, 2012 | 2000 Toyota Tundra

3 Answers

Car turns all the way off while driving, including headlights, starts right back up, but drives like it has bad gas, (surges), but that's not the problem

Your right, bad gas may not be the problem, but have you checked and changed the fuel filter and possibly the fuel pump? Typically if your fuel filter is going out, the cars' computer will default out and tell the engine to shut down.

Oct 11, 2011 | 1988 Toyota Cressida

1 Answer

I have a 2001 Chevy Blazer, I have a full gas tank that's leaking fuel. I want to pump out the gas by using the fuel pump. Where can I hook up a positive feed that's easily accessable to turn on...

The easiest (and least invasive) way to do that would be to remove the fuel pump relay and jumper the connections to make the fuel pump run. One connector at the fuel pump relay should be hot at all times (without the key on). Jumper this connector to the connector that goes to the fuel pump. The connector that goes to the fuel pump will be the connector that is opposite DIAGONALLY from the wire that is hot at all times.

The fuel pump relay is located in the underhood fuse block mounted on the left fender apron. The diagram inside the fuse box lid will show you which one it is.

Aug 11, 2011 | 2001 Chevrolet Blazer

1 Answer

The fuse to the fuel pump keeps blowing where can i find a wiring diagram for this

unsure of where the fuse box is, but maybe the pump is trying too hard to pump fuel thru a partially plugged filter and is getting overloaded. has the filter been changed?

Mar 08, 2011 | 1999 Mercury Cougar

2 Answers

Have 88 f 150, turn the key and the pump in the gas tank has no noise. there are some pulled wires by the transfer case, broke by frame, that don't color code to anything. need a color code diagram of wire...

the nain fuel pump power on mos fords was PINK or RED. But 1st check would be the anti-rollover switch (Usually up near the kickpanel). If that has tripped, pressing the reset button will restore power to the pump.

Sep 11, 2009 | 1988 Ford F 150

1 Answer

96 grand cherokee fuel gauge shows empty but scanner shows 49%

sounds like a bad sending unit in the gas tank. While there you may as well replace the fuel pump too.

Jan 22, 2009 | 1996 Jeep Grand Cherokee

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