Question about 1988 Ford Ranger

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Where is the fuel injection relay on 2.9L

Fuel pump working, new fuel filter, and new ignition module
but will not start

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  • reyelmo23 Sep 16, 2008

    mine too getting spark cause we put eather in it then it starts. Brand new fuel pressure regulator. Its getting suffiecient gas to the regulator cause we checked it with a guage, so its just not getting from the regulator to the injectors.

  • Anonymous Oct 02, 2008

    i have an ignition problem not getting any spark i change just about every every electronicignition component and the problem still exist could it be my ecm (computer)

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Under the hood or under the dash in a br2

Posted on Oct 11, 2008

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SOURCE: my s10 will turn over, but wont squirt gas through injecter

Does it crank? Do you have any codes? Check engine light? Do you have spark? No spark check coil, and connections, also it would be nice to know what year it is. Get codes read. No crank check battery and starter. No codes or lights check crank position sensor, make sure your pcm is good after replacing your ignition mod you could have blown it if you did do it right. (engine computer) Check cam sensor if applies. Crank and cam could prevent it from starting and I know one I think cam controls pcm's fuel delivery on gm's

Posted on Dec 30, 2008

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3 Answers

Does an ignition control module have anything to do with fuel pump functioning?


1987 rangers use a device called a TFI module to control ign. timing , this merely triggers a std. coil to fire the center port of distributor cap , this device only controls the coil to fire but does send a pulse for timing back to ecu this sets the base pulse for fuel injection , but its also affected by manifold Air flow and exhaust O2 amounts (closed loop) , but engine should run in base mode (open loop) fuel timing (but not well) , fuel pump relay is enabled to run via ECU output , Now your year ranger had a tech bulletin out on fuel pumps , seems they had a problem getting them to work after a fuel filter was replaced , something about a false backpressure , no if you have no/low fuel pressure then id look at fuel pump power 1st then fuel pump itself assuming you've already tried a new filter of course

Jun 14, 2015 | 1987 Ford Ranger

1 Answer

4.3 v6 vortex 2002, the truck will not turn over, there is spark at the plug, and fuel and pressure at the valve on top of the engine. When I turn the key is starts but don't turn on. Just replaced fuel...


Most fuel injection systems use a ignition bypass circuit to energize the fuel pump when starting the engine. However, when the engine starts and the ignition key is returned to the "On" position, a Fuel Pump Relay keeps the fuel pump working. The relay may be defective.

Dec 27, 2014 | Cars & Trucks

1 Answer

Does the 2000 320d bmw have a cam sensor ?


No:5 is cam sensorEngine difficult to start - engine warm

Component check sequence

Electrical connections - engine/batteryAir in fuel systemFuel non-return valveFuel level in tank lowCondition of fuel/fuel filter/fuel pipesAir filter/intake system - blockageEngine mechanical conditionFuel injection pump timingAccess diagnostic trouble codesLow pressure fuel delivery pump(s) - some modelsLow pressure fuel delivery pump relay(s) - some modelsEngine coolant temperature (ECT) sensorFuel quantity adjusterInjectorsFuel injection timing solenoidInjection pump position sensorFuel injection pumpEngine management system - connections/wiringEngine control module (ECM) programmingFuel injection pump control moduleEngine control module (ECM)
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Feb 05, 2013 | Cars & Trucks

1 Answer

Fuel system troubleshooting


I was going to suggest checking for spark but I guess you found it. The computer checks for a reference pulse from the ignition module before allowing the fuel system to start or continue injecting fuel into the cylinders.

Jul 10, 2012 | 1992 Chevrolet K1500

1 Answer

Dies while driving and will not start it cranks I have a new computer.new relays.new ignition module. new battery. new fuel pump. new plugs and wires.


CHECK THE FUEL PUMP RELAY CHECK FOR FUEL PREASURE AND RESTRICTIONS,CHECK FOR A CALAPS AIR FILTER AND OR FUEL FILTER

Sep 02, 2011 | 1989 Ford Ranger

2 Answers

My 93 cougar like sputters when running. no power, and idles real hard. what could this be?


I'm guessing fuel pump is going. Check for 40 PSI pressure with fuel pressure gauge. Check in engine comaprtment.
Section 10-01: Fuel Tank, Filters, Lines and Electric Fuel Pump 1995 Thunderbird, Cougar Workshop Manual
DESCRIPTION AND OPERATION Fuel Pump, Electric The electric fuel pump:
  • Is part of the fuel pump module.
  • Is located in an internal reservoir in the polyethylene fuel tank (9002) .
  • Is mounted with its inlet at the bottom of the reservoir.
  • Is designed to increase satisfactory pump operation during extreme vehicle maneuvers and steep climbs with low fuel levels.
  • The high-pressure fuel pump module on the 3.8L SFI and 4.6L-2V engines can supply 60 liters (15.9 gal) of fuel per hour at a working pressure of 269.0 kPa (39 psi).
  • The fuel pump module on the 3.8L SC SFI engine can supply 125 liters (29.0 gal) at the same rate and pressure.
  • The fuel pump module has an internal check valve to maintain pressure in the system after the engine is shut down.
  • The fuel pump module also has an internal release valve to provide protection from too much pressure if fuel flow becomes clogged in the fuel filter (9155) , the fuel line is damaged, or other factors.
  • Overpressure is limited to 850 kPa (123 psi) and reduced fuel flow will result if the pressure relief valve is activated.
  • The fuel pump module is protected at its inlet by a nylon fuel filter element (9365) which filters contaminants which could plug or damage fuel pump components.
  • The fuel filter element simultaneously allows passage of small quantities of water which may accumulate within the tank reservoir.
  • The electrical system has a fuel pump control relay in the powertrain control module (PCM) (12A650) which provides power to the fuel pump module through an inertia fuel shutoff switch (IFS switch) (9341) that is normally closed.
  • The electrical system provides power to the fuel pump module through two relays:
    • Fuel pump power relay.
    • PCM power relay.
The current path depends on operating conditions.
  • When the ignition switch (11572) is OFF, contacts of both relays are open.
  • When the ignition switch is first turned to RUN, the PCM power relay energizes and closes its contacts.
  • Power is sent to the fuel pump relay and a timing device in the powertrain control module .
  • The fuel pump module runs through the contacts of the fuel pump relay.
  • If ignition switch is not turned to START, the timing device in the powertrain control module will open ground Circuit 57 after about a second.
  • Opening the ground circuit deenergizes the fuel pump relay, which opens its contacts and de-energizes the fuel pump.
  • The circuitry provides pre-pressurization of the fuel system.
  • When the ignition switch is turned to START, the powertrain control module operates the fuel pump relay to provide fuel while cranking.
  • After the engine starts and the ignition switch is ON, power to the fuel pump module is again supplied through the fuel pump relay. The powertrain control module senses engine speed and shuts the fuel pump module OFF by opening the ground circuit to the fuel pump relay when the engine stops or is below 120 rpm.



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Oct 26, 2010 | 1993 Mercury Cougar

1 Answer

Replace egr valve still wont start


PROBLEM COULD BE FAULTY FUEL PUMP OR IGNITION MODULE.CHECK FUEL PRESSURE SHOULD BE 41 - 47 PSI. IF NO FUEL PRESSURE TO LOW REPLACE FUEL FILTER.STILL LOW FUEL PUMP FAULTY.IF FUEL PUMP DONT RUN CHECK FUSE AND RELAY.IF FUSE RELAY GOOD PUMP BAD.IF FUEL SYSTEM OKAY USE A SPARK TESTER TO CHECK FOR SPARK AT SPARK PLUGS IF NOT CHECK IGNITION MODULE FUSE IF OKAY IGNITION MODULE COULD BE BAD.USE A CODE SCANNER TO CHECK FOR FAULT CODE IN PCM AND IGNITION MODULE.THIS SAVE YOU FROM SPENDING TOO MUCH MONEY.

Sep 04, 2010 | 1993 Oldsmobile Cutlass Supreme

2 Answers

95 z28 cranks but wont start what do i look for


Items to check out: Battery and battery cables (Load test battery and make sure cables are clean and tight especially the B+ cable off the starter).
Listen to the cranking speed of the starter. Does it sound normal or slow? Depending on what you hear you may want to do a starter current draw test or have a shop do it for you.

If all of the above are a-ok then move onto fuel and ignition checks.
When you put the key into the ignition and turn it to on position do you hear the fuel pump buzz?
No buzzing sound ... you could have either a bad fuel
pump or relay. To test the relay use the shop manual .But you can use a jumper wire to jump the B+ terminal off the relay to the pump motor terminal off the relay and see if the pump runs. Before you do this make sure there is B+ off the relay B+ terminal. If the pump doesn't run, the pump is your problem. To verify the relay works there has got to be B+ going into the relay and coming out of it to juice up the pump. Use a voltmeter to verify this. Good luck

Unscrew a spark plug attach it to its wire and ground its electrode . Crank engine and look for spark. Or use a spark tester.
No spark! Now check plug wires and coil. How? Use shop manual for correct testing procedure .
If no spark is found coming from the coil then check B+ coming from battery to coil and ignition module. And check the ignition module. REMEMBER IF YOUR GETTING SPARK, THERE IS NO NEED TO TEST THE MODULE.
Lastly not likely , ignition switch should not be left out of the equation. Your gonna need the shop manual for that test procedure. Good luck

Apr 21, 2010 | 1995 Chevrolet Camaro

3 Answers

Fuel pump relay switch not working/ fuel pump emergency switch?


weak fuel pump,or cloged filter,or bad fuel pressure regulator!!!

Feb 24, 2010 | 1992 Mercury Cougar

1 Answer

1991 pontiac 2.5 tech 4 fuel pump relay wont energize


Look for a bad fuse or relay. If both check out, most likely an ECM problem

Mar 07, 2009 | 1991 Pontiac Grand Am

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