Tip & How-To about Ford Ranger

Ford Ranger inertia pump and switch

Your vehicle has an inertia switch, which is located on the tow board to the right of the transmission pump. Usually the fuel pump does not shut off except in the case of an accident but you can check it anyway. Being fuel injected, your fuel pump is probably in the gas tank and if there is no power to the wires coming out of the tank, you probably have a bad fuel pump

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There is no current passing through on the gas fuel pump. Any ideas on what the problem is or how i can fix it?


Hello! Has the vehicle been in a recent fender bender? If so the Inertia Fuel Shut-off Switch may be tripped...It is located on the toe board to the right of the transmission hump in the passenger foot well...See diagram...if this isn't the fault let me know...There are several sensors that could keep the fuel pump relay from pulling, including a bad relay itself...



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Guru.......Saailer

Aug 28, 2011 | 1999 Ford Explorer

1 Answer

Car will turn over but won't start. Through the


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.

Jul 17, 2011 | 1995 Ford Explorer

1 Answer

where is the fuel pump relay button located


If you're talking about the Inertia switch, the following may help: Inertia Switch GENERAL INFORMATION This switch shuts off the fuel pump in the event of a collision. Once the switch has been tripped, it must be reset manually in order to start the engine. The inertia switch is located on the toe-board, to the right of the transmission hump, in the passenger-side footwell.

Sep 18, 2010 | 1996 Ford Explorer

2 Answers

Unable to locate the inertia pump on 98 ford ranger


Your vehicle has an inertia switch, which is located on the tow board to the right of the transmission pump. Usually the fuel pump does not shut off except in the case of an accident but you can check it anyway. Being fuel injected, your fuel pump is probably in the gas tank and if there is no power to the wires coming out of the tank, you probably have a bad fuel pump

Apr 17, 2010 | 1987 Ford Ranger

2 Answers

my truck won t start tow guy mentioned of a kill switch in vehicle i also read about in manual almost seems as if no gas is passing


vehicles are equipped with a fuel pump circuit breaker,or 'crash switch' that shuts off fuel pump in case of an 'incident'. consult owners manual for exact location & procedure.usually a button is pressed to reset.

Oct 15, 2009 | 2007 Isuzu i-290 Extended Cab

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