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Fuel pump will not operate on 2000 contour se . fuel pump was bench tested and installed . have circuit continuity from relay to pump. replaced crankshaft sensor. i'm at a lose as to where to go from here. thanks for your help!

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  • 24 Answers

Could be a bad relay or fuse

Posted on Oct 18, 2013

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Posted on Jan 02, 2017

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SOURCE: 2002 Kia Sportage will not start.

p0560 is system voltage problem. open or short between the battery positive and the ecm.CHECK ALL FUSES. dosnt matter what they are labeled under dash and under hood replace any that are bad and retry to start. no start then check voltage to ecm grounds to. i dont have a wireing diagram to give you but for a small fee or free the dealer can make you a copy.make sure all the wires that go to battery terminals are not corroded and are making good contact [verified with volt meter]. if after all checks ok then replace ecm. as a side note i havent had to change one ever.

Posted on Apr 11, 2010

Testimonial: "Thank you for the help. We will continue to check all fuses and wires."

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Have a 1990 Chevy Silverado pickup 350 Put a new fuel pump fuel filter screen fuel pump relay Fuse electronic control module cap rotor new injectors. Injectors won't spray but they have power. Fuel pump...


Disconnect the wire connection to the fuel pump, turn it on and test for 12V (or whatever your car battery voltage is) at the leads coming from the battery. If 12V is present the problem is the fuel pump. Test the continuity of the pump circuit at the same time (no power on for this test). set VOM to resistance attach to both leads going to pump. If reads 0.00 continuity is OK. If no reading pump circuit is open, pump motor is bad. I have had them bad right out of the box. Good lesson to learn whenever possible, ALWAYS bench test new parts before installing.

Aug 10, 2014 | Cars & Trucks

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1995 ford contour cranks but won't start, change fuel filter, fuel pump, and spark plugs. Not getting any spark.


Have you ever heard of testing before replacing parts ? Fuel pressure an flow tesing , testing the electrical circuit for the fuel pump , amp draw testing , voltage drop testing etc... Thier are no magical fixes in auto repair . No spark ! check B+ voltage an ground circuits for the ignition system , Ignition System Designs Operation and Testing an SD Premium video

Jun 18, 2017 | 1995 Ford Contour

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2000 mercury grand marquis 4.6 fuel


Voltage drop test the electrical circuit , do know how to do automotive electrical testing . Lose connection , resistance in the circuit , lose ground Mastering Voltage Drop Testing with Pete Meier and Jerry Truglia Testing Electric Fuel Pump Problems with Voltage Drop Test

Feb 27, 2017 | 2000 Mercury Grand Marquis

1 Answer

2000 mercurt grand marquis


Not guessing as to what the problem is , testing for voltage drop problems with a volt meter . posted a video on youtube yesterday . If your still looking for guesses forget it , no one on here could say for sure without testing the circuit an hooking up a scan tool to see if PCM is energizing the relay . Do yourself a favor an take it to a qualified repair shop . Fuel Pump Electrical Circuits Description and Operation If you can't learn how to test from this guy , better take to a repair shop .

Mar 01, 2017 | Ford Cars & Trucks

3 Answers

I have a 02 grand caravan, there is fuse call asd that keeps on blowing.


Well in a short term, you have a short circuit somewhere. Here is a detailed toturial for you. Please rate this post, thank you.

Automatic Shutdown (ASD) sense - PCM Input

The ASD sense circuit informs the PCM when the ASD relay energizes. A 12 volt signal at this input indicated to the PCM that the ASD has been activated. This input is used only to sense that the ASD relay is energized.
When energized, the ASD relay supplies battery voltage to the fuel injectors, ignition coils, and the heating element in each oxygen sensor. If the PCM does not receive 12 volts from this input after grounding the ASD reley, it sets a Diagnostic Trouble Code (DTC).

Automatic Shutdown Relay - PCM Output

The PCM operates the Automatic Shutdown (ASD) relay and fuel pump relay through one ground path. The PCM operates them by switching the ground path for the solenoid side of the realys on and off. Both realys turn on and off at the same time.
The ASD relay connects battery voltage to the fuel injectors and ignition coil. The fuel pump relay connects battery voltage to the fuel pump.
A buss bar in the power distribution center (PDC) supplies voltage to the solenoid side and contact side of the relay. The ASD relay power circuit contains a 20 amp fuse between the buss bar in the PDC and teh relay. The fuse also protects the power circuit for the fuel pump relay and pump. The fuse is located in teh PDC.
The PCM controls the relay by switching the ground path for the solenoid side of the relay on and off. The PCM turns the ground path off when the ignition switch is in the Off position. When the ignition switch is in the On or Crank position, the PCM monitors the crankshaft position sensor and the camshaft position sensor signals to determine engine speed and ignition timing (coil dwell). If the PCM does not receive the crankshaft position sensor and camshaft position when the ignition switch is in teh Run position, it will de-energize teh ASD relay.
The ASD relay and fuel pump relay are located in the PDC near the battery. The inside top of the PCD cover has a label showing relay and fuse location.

ASD and Fuel Pump Relays

The following description of operation and tests apply only to the Automatic Shutdown (ASD) and fuel pump relays. The terminals on the bottom of each relay are numbered.

'------------------'
' __85 ___________'
' __87A '87 '30 ___' Sorry for the crudeness of this. This is supposed to
' __86 ___________' be the relay terminals!
'------------------'

OPERATION
- Terminal number 30 is connected to battery voltage. For both the ASD and fuel pump relays, terminal 30 is connected to battery voltage at all times.
- The PCM grounds the coil side of the relay through terminal number 85.
- Terminal number 86 supplies voltage to the coil side of the relay.
- When the PCM de-energizes the ASD and fuel pump relays, terminal number 87A connects to terminal 30. This is the Off position. In the off position, voltage is not supplied to the rest of the circuit. Terminal 87A is the center terminal on the relay.
- When the PCM energizes the ASD and fuel pump relays, terminal 87 connects to terminal 30. This is the On position. Terminal 87 supplies voltage to the rest of the curcuit.

TESTING
The following procedure applies to the ASD and fuel pump relays.
(1) Remove relay from connector before testing.
(2) With the relay removed from the vehicle, use an ohmmeter to check the resistance between terminals 85 and 86. The resistance shoud be 75±5 ohms.
(3) Connect the ohmmeter between terminals 30 and 87A. The ohmmeter should show continuity between terminals 30 and 87A.
(4) Connect the ohmmeter between between terminals 87 and 30. The ohmmeter should not show continuity at this time.
(5) Connect one end of a jumper wire (16 guage or smaller) to relay terminal 85. Connect the other end of the jumper wire to the ground side of a 12 volt power source.
(6) Connect on end of another jumper wire (16 guage or smaller) to the power side of the 12 volt power source. Do not attach the other end of the jumper wire to the relay at this time.

WARNING: DO NOT ALLOW OHMMETER TO CONTACT TERMINALS 85 OR 86 DURING THIS TEST.

(7) Attach the other end of the jumper wire to relay terminal 86. This activates the relay. The ohmmeter should now show continuity between relay terminals 87 and 30. The ohmmeter should not show continuity between relay terminals 87A and 30.
(8) Disconnect jumper wires.
(9) Replace the relay if it did not pass the continuity and resistance tests. If the relay passed the tests, is operates properly. Check the remainder of the ASD and fuel pump curcuits.

__________________________________________________ _______________

I know you said you replaced the relay, and this is a test procedure for the relay, but I have bought bad parts in the past. The description before the test procedure at least gives you an idea of what components are wired through and controlled by the relay. One of those may be faulty. Email me if you want or need wiring diagrams and I should be able to scan them and email them to you.

I hope this helps.

Please rate this post, thank you

Apr 07, 2011 | Dodge Grand Caravan Cars & Trucks

1 Answer

I have a 1988 ford f150 with a 5.0 not getting power to eather fuel pump. replaced relay. bench tested both pumps an they test good. truck will fire and run with starting fluid then dies like it will...


replace the oil sending switch on the motor. upon starting the engine this switch has a 3rd wire connected to the fuel pump
when oil pressure is running at its normarl psi the computer will shut that circuit off and then turn on the fuel pump relay

Aug 08, 2010 | 1988 Ford F 150

1 Answer

Fuel pump clicks i have replaced the fuel pump/filter/relay


you need to be aware of the most important rule just because its new it does not mean its good . fuel pumps hum they dont click you need to remove it and bench test it its most likely stuck . i always bench test them before i install them . hope this helps .

Jul 31, 2010 | 2002 Pontiac Grand Am

1 Answer

Fuel Pump Runs Continuously - Not Relay


It could be some water in a wiring harness plug causing the relay to stay on constantly, or a short to earth in the switching side of the fuel pump circuit, but really it needs a auto electrician to have a look over it to find out why the relay is staying powered on all the time. When you plug in the relay can you feel it click on straight away? Or does the pump run regardless of whether the relay is plugged in or not? If the latter is true, check for damage to the wiring loom from the relay to the pump. Other than that, its probably auto sparky time.

Hope this helps,
Mark.

Nov 02, 2008 | 1997 Ford Contour

2 Answers

How to change a fuel pump in a 2000 chevy blazer


Good Day,

I am assuming that you have the 4.3L V6.

The fuel pump is always a pain on trucks becasue you have to remove the tank to gain access. The pump is bolted in on the top side of the tank. I hope it doesn't have a full tank of gas as it needs to be drained(re-use when job is complete). Not to mention pulling a tank that's full of gas very heavy.
See this link for an overview:

http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c152800a13e9

http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c152800a145a

Here's how you test the fuel pump relay, and fuel pump:

  1. Turn the ignition OFF.
  2. Remove the relay.
  3. Locate the two terminals on the relay, which are connected to the coil windings. Check the relay coil for continuity. Connect the common meter lead to terminal 85 and positive meter lead to terminal 86. There should be continuity. If not, replace the relay.
Fuel Pump
  1. Turn the ignition key OFF for ten seconds.
  2. Turn the ignition key to the ON position but do not start the engine.
  3. You should here the fuel pump operate for two seconds (a light electrical humming sound).
  4. Apply a 12 volt fused jumper wire to the fuel pump prime (test) connector. This should be located in the driver's side of the engine compartment. The fuel pump should operate.
  5. If the fuel pump does operate, remove and test the relay. If the relay is defective, replace the relay and repeat the test.
  6. If the relay is operating properly, connect a grounded test light to the fuel pump relay control wire (green with white stripe) at the relay. Turn the ignition switch to the ON position. The test light should illuminate for two seconds and go out. If the test light does not illuminate, check the relay control wire for continuity and repair as necessary, then repeat the test.
  7. Connect a grounded test light to the feed wire (orange) at the relay and turn the ignition key ON. The test light should illuminate. If the light does not illuminate, test feed wire for continuity and the fuse in the underhood fuse relay center. Repair as necessary and repeat the test.
  8. If the fuel pump is still not functioning, connect a fused jumper wire between the feed (orange) wire and the fuel pump motor (gray) wire at the relay. The pump should operate.
  9. If the pump does not operate, check the fuel pump motor wire for continuity and repair as necessary.
  10. If the pump will still not operate, replace the pump.
  11. If the pump does operate, start the vehicle and remove the relay. The vehicle should continue to run. If the vehicle stalls, check the fuel pump/oil pressure switch and its wiring. Repair as necessary and repeat the test.
Also see figure 4 which is digram 3 from this link, this is the schematic on the fuel pump, the fuel pump's hot wire is tan with a white stripe, if you can test the voltage of this wire you can confirm it is not an electrical problem.

http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c1528008f3ce

Also be sure to releive the fuel pressure before servicing

http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c152800a1468


  1. Disconnect the negative battery cable.
  2. Loosen the fuel filler cap to relieve fuel tank pressure.
  3. Connect fuel pressure gauge J-34730-1A or its equivalent to the pressure connection. Wrap a shop towel around the fitting while connecting the gauge to prevent spillage.
  4. Install the bleed hose into an approved container and open the valve to bleed the system. The system is now safe for servicing.
  5. Drain any fuel remaining in the gauge into an approved container.
Let me know if any of this is jibberish to you and I can clarify further.

Good Luck again, and feel free to ask anymore questions.

Jul 03, 2008 | 2000 Chevrolet Blazer

1 Answer

Engine size


Okay,
I love the 4.3L I have a tricked out 2000 S10 with that motor and its awesome(a few aftermarket bolt ons and those motors really scream!), I have also had an 89 Jimmy and 96 S10 with that motor so your in luck as I I know it inside and out.

The fuel pump is always a pain on trucks becasue you have to remove the tank to gain access. The pump is bolted in on the top side of the tank. I hope it doesn't have a full tank of gas as it needs to be drained(re-use when job is complete). Not to mention pulling a tank that's full of gas very heavy.
See this link for an overview:

http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c1528008f213

Here's how you test the fuel pump relay, and fuel pump:

  1. Turn the ignition OFF.
  2. Remove the relay.
  3. Locate the two terminals on the relay, which are connected to the coil windings. Check the relay coil for continuity. Connect the common meter lead to terminal 85 and positive meter lead to terminal 86. There should be continuity. If not, replace the relay.
Fuel Pump
  1. Turn the ignition key OFF for ten seconds.
  2. Turn the ignition key to the ON position but do not start the engine.
  3. You should here the fuel pump operate for two seconds (a light electrical humming sound).
  4. Apply a 12 volt fused jumper wire to the fuel pump prime (test) connector. This should be located in the driver's side of the engine compartment. The fuel pump should operate.
  5. If the fuel pump does operate, remove and test the relay. If the relay is defective, replace the relay and repeat the test.
  6. If the relay is operating properly, connect a grounded test light to the fuel pump relay control wire (green with white stripe) at the relay. Turn the ignition switch to the ON position. The test light should illuminate for two seconds and go out. If the test light does not illuminate, check the relay control wire for continuity and repair as necessary, then repeat the test.
  7. Connect a grounded test light to the feed wire (orange) at the relay and turn the ignition key ON. The test light should illuminate. If the light does not illuminate, test feed wire for continuity and the fuse in the underhood fuse relay center. Repair as necessary and repeat the test.
  8. If the fuel pump is still not functioning, connect a fused jumper wire between the feed (orange) wire and the fuel pump motor (gray) wire at the relay. The pump should operate.
  9. If the pump does not operate, check the fuel pump motor wire for continuity and repair as necessary.
  10. If the pump will still not operate, replace the pump.
  11. If the pump does operate, start the vehicle and remove the relay. The vehicle should continue to run. If the vehicle stalls, check the fuel pump/oil pressure switch and its wiring. Repair as necessary and repeat the test.
Also see figure 4 which is digram 3 from this link, this is the schematic on the fuel pump, the fuel pump's hot wire is tan with a white stripe, if you can test the voltage of this wire you can confirm it is not an electrical problem.

http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c1528008f3ce

Also be sure to releive the fuel pressure before servicing

  1. Disconnect the negative battery cable.
  2. Loosen the fuel filler cap to relieve fuel tank pressure.
  3. Connect fuel pressure gauge J-34730-1A or its equivalent to the pressure connection. Wrap a shop towel around the fitting while connecting the gauge to prevent spillage.
  4. Install the bleed hose into an approved container and open the valve to bleed the system. The system is now safe for servicing.
  5. Drain any fuel remaining in the gauge into an approved container.
Let me know if any of this is jibberish to you and I can clarify further.

Good Luck again, and feel free to ask anymore questions.

Jul 02, 2008 | 1997 Chevrolet K1500

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