Question about 1998 Ford Escort

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Turns over will not start

Fuel pump and computer were replace turns over but still will not start

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Check for spark

Posted on Mar 02, 2009

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No power to fuel pump on 92 olds silhoutte


The oil pressure sensor only keeps the pump running after the vehicle is started. If you turn key to on, the computer should signal to the fuel pump relay, turning the pump on for a couple of seconds to pressurize the fuel system. Then the computer signal stops. When the key is turned to start-cranking the engine- the computer again energizes the fuel pump relay, keeping the pump running until the engine starts.
If you have a voltmeter or test light, pull the relay out and check the relay terminals. One should be hot at all times-the power feed for the pump. The computer signal will be on the coil side of the relay-will have power for 2 or 3 seconds after key is turned to on. Or it will have a constant signal when the engine is cranking. If you can find both hot terminals at the relay, then start looking for a bad wire from relay to pump, or a bad ground for the pump, or a bad ground for the relay's coil side. Post back if unclear or other questions. When you pull the relay out, the diagram for it will be on the side of the relay-telling you which is the power feed and the terminal to the pump, and the coil side of relay, both the coil power side and the coil ground terminal.

Jan 16, 2014 | Oldsmobile Silhouette Cars & Trucks

1 Answer

Getting fuell to carb new fuel pump and filters will start whn fuel is poured in carb


if computer command truck with an ECM replace the engine's oil pressure sensor. It has 3 wires to it and one runs to the fuel pump to prime upon starting the engine. Once oil pressure is acheived the computer switches that senors wires circuit off and turns on the fuel pump relay to take over the fuel pumps operations till you shut the engine off

Aug 07, 2011 | GMC K1500 Cars & Trucks

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

7 months ago. I replaced fuel pump for my 98 chevy s 10. The other day. Went for a drive. Went to go start it after shutting it off. It wants to turn over. But know sound of fuel pump. An it wouldn't...


check the wiring and replace the pum with a good brand or from the dealer
1997 astro van the original fuel pump last 12 years the auto parts pump 11 months
there is a fuse and a relay also signal comes from the computer
good luck

Nov 23, 2010 | 1998 Chevrolet S-10 Pickup

1 Answer

1988 chevy will not run,fuel injecter will not spray fuel tried fuel pump all sensors and computer will run if you poor fuel in the throttle body.


turn the ignition to the on position without starting the engine. you should hear the fuel pump running for 5 seconds inside the fuel tank. if not heard replace the engines oil switch. that starts the pumps circuit when the key is turned on. after the engine builds up its normal oil pressure the computer shuts that oil switches circuit off and turns on the fuel pump relay

May 15, 2010 | 1988 Chevrolet S-10

1 Answer

The car stalled going down the road-fuel filter replaced 6000mi ago -the car turn over won't start


can you hear the fuel pump when you turn the ignition key to start position??( you should hear it start then stop after few sec.) If not, this could be the fuel pump or the fuel pump relay the pump fuse,some bad contact in the wiring of the fuel pump or the worst case the computer.but if you do,unplug your main fuel line to the injector turn the switch to start position again to see if you have some fuel coming out.if not this could be the fuel filter or the fuel pressure switch! hope this will help you...lipak!..

May 05, 2010 | 1998 Ford Escort

2 Answers

Car will not start


you getting sparks; check the basic from fuse and relay. Its seems like you not getting any fuel by having to give it fuel, check the fuel pump see if it working, you can remove it and connect straight to 12v and do a jump. If the fuel pump is good then it will be the crank sensor, crank sensor turn on the fuel pump as long the engine continue turning over. what crank sensor does it sense the crank/flywheel turning and it send single to the computer than computer send power to the fuel pump. sensor tend to go bad over time and heat exposure; the sensor it fairly cheap to replace.

Oct 24, 2009 | 1996 Jeep Grand Cherokee

1 Answer

I have to turn the ignition on and off several times before the car starts. Recently replaced water pump after car overheated. Could coolant have caused the issue?


Replace fuel filter if it has not been done in a while. Also check fuel pump pressure with a gauge and compare with spec. When key is turned "on" the computer turns on fuel pump via relay. If the computer does not see rpm signal (engine start) within approx. 2 seconds it turns the fuel pump back off. Cycling the key often helps to build up fuel pressure sufficient to start when filter is plugged or pump pressure is weak.

Jun 29, 2009 | 1999 Ford Expedition

1 Answer

1996 GMC K1500 Pickup Starting Problem


i would try a fuel filter first. the fuel gauge going crazy is most likely the sender they go bad and eventually stop working. the bummer is you have to replace the fuel module. these aftermarket are about 200 bucks. the module comes with the pump and sender which is the next part you want to look at. gm has some issues with the harness to the fuel pump externaly. it actualy will melt and start to lose conection. i would check this by visualy inspecting the plug on top of the tank. unplug it and take a look. if it is at all disscolored replace the pump (module). the new pump comes with a replacement harness (make sure its in the box)hope this helps and good luck

Feb 03, 2009 | 1998 GMC Sierra

1 Answer

Fuel pump relay & fuel pump


when you turn the key on the pump should run to purge the system . so now you have fuel pressure for starting. this stage lasts about 10 seconds then the fuel pump doesnt turn on again till the computer see's oil pressure then turns the pump on. if the inertia switch has been activated it wont send the first amount of fuel.

Jul 26, 2008 | 1996 Ford F150 Regular Cab

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