Question about 2002 Ford Expedition
I have replaced the fuel pump relay a week ago. Now it's doing the same thing it did before I replaced the relay. It cranks fine but won't start. Someone suggested checking the fuel pump fuse
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
No noise from fuel pump when you turn over the car .First thing get voltage at fuel pump relay checked, is there 12 volt to the relay.If no, then problem is again the relay.---------
To reconfirm the problem, try other test, that is remove the relay and by pass the relay terminals with a jumper wire .Then with 12 volt external battery give power to fuel pump connector and see, if the fuel pump starts, then its clear that fuel pump relay is faulty.----------- Also other problem can be fuel pump inertia switch.If the inertia switch is faulty then also fuel pump will not start.--------
The fuel pump relay on a 1995 Ford Explorer is in the power distribution
box, in the engine compartment, driver's side near the firewall.----------
The fuel pump inertia switch is in the right front passenger area
it is below the dash but above the carpet in the right hand corner.--------
Its a push button type inertia switch.
Fuel Pump Activation
When ignition switch is turned to START position, PCM operates fuel pump relay to provide fuel for starting engine. PCM senses engine speed and shuts off fuel pump by opening ground circuit to fuel pump relay when engine stops or engine speed drops to less than 120 RPM. When ignition switch is in ON position, EEC power relay is energized (contacts closed). Power is provided to fuel pump relay and timer in PCM. Fuel pump receives power through fuel pump relay contacts.
Inertia Fuel Shutoff (IFS) Switch
All models use an electrical interrupt switch in fuel system. During a collision or vehicle rollover, electrical contacts within inertia switch open, shutting off fuel supply to electric fuel pump. Fuel supply is interrupted even when engine is running.
A reset button is located on switch assembly. If electrical circuit trips, vehicle will not restart until switch is reset. Fuel system should be inspected before resetting switch.
IFS switch is located under instrument panel, near right side of transmission hump. ----------- If the fuel pump relay, the inertia switch and fuel pump all checked ok, and fuel pump is working with direct 12 volt source to fuel pump.Then problem relates to computer.The computer (power control module, PCM) is faulty and has to be replaced.--------- This will help.Thanks.Helpmech.
Posted on Jul 17, 2011
Testimonial: "Thanks. That was the best answer yet.I didn't want to hear that the PCM might need to be replaced but the car has served it's purpose through the year"
.Never use starting fluid you can ruin the engine fast.check all wiring to coils. get a spark tester pull a plug and turn it over watch for spark.
Posted on Sep 25, 2009
Tips for a great answer:
Mar 24, 2016 | Ford Cars & Trucks
Dec 28, 2013 | 2006 Ford Expedition
Jul 17, 2013 | Cars & Trucks
Mar 08, 2013 | 2000 GMC Jimmy
Feb 13, 2013 | Cars & Trucks
Feb 03, 2013 | 2004 Ford Expedition
Jul 27, 2012 | 1998 Acura RL
The fuel pump shut-off switch is
located in the passenger's foot well,
by the kick panel.
Jul 19, 2011 | 2001 Ford Expedition
Jun 23, 2011 | 1999 Ford Expedition
114 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: