Question about 1998 Ford Explorer

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No fuel replaced fuel pump relays, checked safteyswitch

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Have someone listen in filler hole turn key on. Should buzz about 10 secounds. If not fuel pump not coming on.

Posted on Jul 27, 2009

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No power to euel pump olds intrepid


Check for battery voltage at the pump relay if none replace fuse, if ok check relay to pump voltage . if none replace pump relay. if ok check voltage at fuel pump , if none replace cable , if ok replace fuel pump.

May 02, 2017 | Cars & Trucks

1 Answer

Fuel pump removale


Hi there,

Note: as your vehicle is 2009, it may still be covered under Manufacturer's Warranty. If still covered, you should have them replace at no charge.

Firstly, unless you have read your codes from your vehicle's computer and confirmed your fuel pump is actually faulty (ie Code P0203), you should should check your diagnostics first - as other electrical components could contribute to the fuel pump not working.

Start by inspecting the following circuit components:


FUEL PUMP RELAY INSPECTION


1. REMOVE RELAY BOX COVER
2. REMOVE FUEL PUMP RELAY (Marked: F/PUMP)


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3. INSPECT FUEL PUMP RELAY CONTINUITY


(a) Using an ohmmeter, check that there is a continuity between terminal 1 and 2. If there is "NO" continuity, replace the relay.


(b) Check that there is no continuity between terminals 3 and 5. If there "IS" continuity, replace the relay.


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4. INSPECT FUEL PUMP RELAY OPERATION


(a) Apply the battery positive voltage across terminals 1 and 2.


(b) Using an ohmmeter, check that there is a continuity between terminals 3 and 5.
If there is "NO" continuity, replace the relay.

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5. REINSTALL FUEL PUMP RELAY
6. REINSTALL RELAY BOX COVER


FUEL PUMP RESISTOR

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INSPECTION


1. REMOVE FUEL PUMP RESISTOR
2. INSPECT FUEL PUMP RESISTOR

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Using an ohmmeter, measure the resistance between the terminals.


Resistance: 0.70 - 0.76 W at 20°C (68°F). If the resistance is not as specified, replace the resistor.

3. REINSTALL FUEL PUMP RESISTOR

If all the above components prove satisfactory, then proceed with fuel pump removal.

Access to the fuel pump & sender unit is via a service hole. The service hole is located under the No.1 Rear Seat (through the floor), so you will need to lift the rear seat & carpet, then remove the service cover.


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Cheers,



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Jun 11, 2011 | 2009 Toyota Land Cruiser

2 Answers

1995 dakota fuel pump relay. If the relay is bad,


If fuel pump relay is bad yes it will still get spark.
Sonds like you do have a fuel pump, or fuel pump relay problem, most likely the pump.

Oct 11, 2010 | 1995 Dodge Dakota

2 Answers

How do i check the fuel pump relay and the fuel pump to see which is the bad part on a 99 Yukon 4x4, 4 door model?


The fuel pump relay should have a schematic on it so you can check it with an ohm meter for a short. If it checks ok and when you turn the key on, you do not hear the pump then replace the pump

Apr 28, 2010 | 1999 GMC Yukon

1 Answer

1997 Ford F150 Electric Fuel Pump will npt pump


Did you check the fuel inertia switch in the passenger side kick panel ?

The fuel pump is powered :
the fuse to the fuel pump relay.
The fuel pump relay to the fuel inertia switch
The fuel inertia switch to the fuel pump itself.

At the fuel inertia switch in the kick panel, power from the relay is the Dark Green w/ Yellow stripe wire and the pink w/ black stripe wire is the power. from the fuel inertia switch to the fuel pump.

If you jumper the fuel pump relay, you should hear it run. If not pull the fuel pump relay, and check the pins in the relay socket, pin 30 should be the power from the fuse.

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If you have power at pin #30, jumper the relay socket as shown with the red line above, and check the dark green w/ yellow stripe wire at the fuel inertia switch for power.
Press the button on the top of the fuel inertia switch, and check for power leaving the fuel inertia switch on the pink w/ black stripe wire.

This is tests good, check for power at the fuel pump, same pink w/ black stripe wire.
Fuel inertia switch info is in the owners manual, If you did not get an owners manual with your truck ( purchased used ), you can download one from Ford :
https://www.fleet.ford.com/maintenance/owners_manuals/default.asp

Jan 03, 2010 | 1997 Ford F150 Regular Cab

1 Answer

1993 lumina 3.1 engine. shuts down while driving,sometimes bucks at 50 m.p.h. checked plug at fuel pump harness and one pin had about 5 volts other 3 dead.swapped fuel pump relay and same thing.jumped...


the computer is what sends the signal to the fuel pump relay. Check the harness plug at the fuel pump again they tend to get loose. there is an updated replacement plug for this. also make sure the terminals on the fuel pump relay are clean and not corroded.

Nov 02, 2009 | 1993 Chevrolet Lumina

1 Answer

1997 Gmc yukon fuel relay switch continues to burn out. Replaced fuel pump twice and also took it the dealer but no solutions. Truck runs fine for sometimes weeks but the problem continues.


I would have to check the fuel pump with a scope to look at the pattern and check the amps it is drawing . the grounds need to be checked and the pcm checked and reflashed. on the fuel system that would affect the fuel pump and relay to where it would burn it out is grounds , pcm , fuel pump , fuel pump relay. so you should convince them to replace the fuel pump and fuel pump relay under warranty and replace the pcm . and get a diagram and check all grounds. If the pcm is damaged and the current has been affected and instead of say a 5 volt or 2 volt signal it now has a 13.5 volt signal or if a ground is out then the temp of the relay will keep rising non energized a relay is about 99 energized it is around 140 you can check to see how hot that relay is getting. and if i remember correctly you want the pcm drivers checked.

Jun 17, 2009 | 2001 GMC Yukon XL

2 Answers

94 dodge grand caravan no fuel in fuel rail


Dear Ron, you have replaced fuel pump and fuel filter. You have checked the fuel pump relay. Still no fuel in rail. Try bypassing fuel relay with jumper from batt to fuel pump. If o/k then check computer for ground to relay. This system uses a relay that is operated by the computer that supplies a ground for the relay to operate. The wire color is green,16 gage. If the ground is not available then "no fuel" Check this with a test light. Key on and crank apply test light to ground wire and other end of light to ground. You should hear relay click and get fuel. If this checks out you will need to replace computer or get creative with rewiring the relay so it works without computer input. Good luck Moe

Apr 24, 2009 | 1994 Dodge Grand Caravan

2 Answers

Mazda truck will crank but won't start up. tried jumping it but it didn't work


sounds like you have a fuel pump issue. first check the fuel pump relay. it's in the junction box under the hood. replace the fuel pump relay with the a/c clutch relay or heater relay and try starting the vehicle if the vehicle starts it was the relay if it doesn't check to see if there is power going to the fuel pump if there is your fuel pump needs replacing if there isn't then check the wire harness for a break in the wire. please rate

Oct 01, 2008 | 1992 Mazda 323

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