Question about 2003 Ford Expedition

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PCM RELAY GETS HOT THEN BLOWS

JUST CLICKS BY FUSE BOX

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6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: where is the door lock relay located on a 1999

  • Aux Relay Box #4 is in the rear driver's side removable panel with the tire jack.
  • This Relay box holds the Door Lock / Unlock relays (ice cube type). It also holds the Driver Door Unlock Relay and the ACC Lights Relay (rectangular relays).
  • Posted on Oct 17, 2010

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    SOURCE: battery good power to the starter 2000 ford

    #1 Try starting the car in Neutral, if no start replace the Park and Neutral safty switch. #2 Check for a faulty starter solenoid. #3 Check for a faulty stsrter motor. #4 Check for a faulty ignition switch. #5 Check for faulty starter Relays.#6 Check the Transmission Range sensor it could be out of adjustment or defective. #7 On 1998 and later models, the power relay is in the power distribution box in the engine compartment. Refer to your owners manual for more information on relay location. Good Luck From Ernie @ RedDeer, Alberta, Canada.

    Posted on Jan 11, 2011

    • 946 Answers

    SOURCE: 2001 Ford taurus #22 fuse (A/C clutch relay PCM

    Remember that when you THINK the AC's off,it's really not.Almost all cars have the AC compressor actuate every time you set the dial to `defrost' or `mix' positions.
    On a TAURUS there are only two positions(maybe three)which DON'T kick the AC on.On some cars,that's the 11 o'clock and 2 o'clock positions on the selector.

    SO...........the odds are that the compressor magnetic clutch or wiring to it has shorted.Because you really have power going there even when you think you don't. (:^) don-ohio

    Posted on Oct 30, 2011

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    1 Answer

    My pcm fuse blows every time i turn on the switch but if a remove my fuel pump relay switch the pcm fuse does not blow 03 alvalanche


    fuel pump is bad,your relay will be also from trying to start pump.there is an outside chance your relay is bad,easier to change that first

    Mar 28, 2014 | 1998 Chevrolet S-10 Pickup

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    Fuel pump not getting signal from PCM


    First make sure all grounds are good. There is a ground going from the pcm to the engine. Many chevy engines had a pcm ground connected to the thermostat bolt. Not sure about the Saturn. A common problem is that someone replaces the thermostat, and forgets to reattach the ground, or to tighten the ground securely. If the car was worked on recently, I would suspect a loose ground.

    Jan 28, 2014 | Saturn Cars & Trucks

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    No spark to plugs 1999 ford f150 4.6l


    https://s21.postimg.org/wwpncpluf/pcm_power_relay.jpg

    Click on the link.
    Voltage for fuse 18 comes from, pcm power relay.
    Terminal 30, load side of relay is fuse protected and hot all the time. If you unplug that relay and use jumper wire between terminal 30 and 87, fuse 18 should go hot. That should mean, the control side of relay has a problem, The control side needs voltage and ground.

    Jul 24, 2017 | 1999 Ford F150 Regular Cab

    1 Answer

    Pcm relay gets hot and fails


    You may have a faulty electric fuel pump.

    Oct 10, 2012 | 2003 Lincoln Navigator

    1 Answer

    PCM fuse keeps blowing


    It's possible you ran the battery down, trying to start? Have to make sure battery has a full charge and battery connections all good. If battery is down, have to use a charger and get it charged, we can't test anything if battery is down.
    I did look at power distribution wiring diagram for your vehicle, I found pcmB fuse--20 amp. Two fuse legs goes to pcm, the other goes to load side of fuel pump relay. If I had to guess, I'd say the fuel pump has a problem. If the wiring before the fuel pump relay or the pcm was the problem, then the fuse would blow as soon as soon as you plug it in. The fuse circuit shows to be hot all the time. Just my opinion. There might be other issues, but, I can't track it from where I am.

    Aug 06, 2017 | 2005 GMC Yukon XL

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    I have a 1999 Alero 3.4 V6 the cooling fans won't run. I checked the fans they both work if I unplug the harness for the temp sensor,the relays and fuses are fine,I replaced the coolant temp sensor and...


    CHECK MODE RELAY IF BOTH RELAYS GOOD YOU CAN CHECK RELAY BY REMOVING IT FROM FUSE BOX HOOK RELAY TERMINAL 85 TO BATTERY POSITIVE AND GROUND TERMINAL 86 IF CLICKS RELAY GOOD. IF RELAY GETTING POWER GOOD AND THE 30 AMP COOLING FAN FUSE OKAY.EITHER THERE IS A SHORT IN COOLING FAN WIRING OR THE PCM HAS FAILED.THE PCM HAS LOST OR COMMAND RUN CIRCUIT IN PCM SHORTED OUT DUE TO PCM FAILURE.LET DEALERSHIP OR GARAGE USE DIAGNOSTIC EQUIPMENT TO ACTIVATE THE PCM SEE IF IT HAS FAILED.DONT SPEND MONEY ON NEW PCM COULD BE SHORT IN THE WIRING CIRCUIT

    Sep 06, 2011 | 1999 Oldsmobile Alero

    1 Answer

    Not getting fire to the fuel pump shut-off switch.


    Hi, first check fuses 28 and 34 in the box under the hood. If the fuses are good, use a 12 volt test light or voltmeter to see if there is battery voltage at fuse 34. If there is voltage at the fuse, the problem is likely the fuel pump relay in the interior fuse box, but could be the ground signal/wire from the PCM. If there is no voltage at the fuse, check the socket of the PCM power relay. Pull the relay out, connect your test light clip to chassis ground, and probe the terminals in the relay socket. There should be one hot terminal with the key off and 2 hot terminals with the key on. If not, the PCM diode may be bad. Please let me know the outcome of your tests or if you have any questions, and thanks for using FixYa.

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    Jun 28, 2011 | 2004 Ford Expedition

    3 Answers

    My fan wont work.when the engine is hot.


    First check the fuse in the engine compartment relay box. If not the fuse, you will need a 12 volt test light (or voltmeter) to troubleshoot, as there are several possible reasons. With the engine hot and running, pull the connector off the fan and use your test light to see if there is voltage in the connector. If there is voltage, replace the motor. In no voltage, move on to the relay. pull the relay out of the socket (in the same box as the fuse). If it clicks when you pull it out, your wiring to the fan is bad. If it doesn't click, try switching it with a similar relay. If a different relay clicks when put in the fan relay socket, your fan should now be coming on. If neither relay clicks, interrogate the relay socket with your test light. Put your clip on a chassis ground point and probe the terminals into the relay socket. If 2 of the sockets light up the light, the system is trying to throw the relay. If not, the likely problem is the PCM or the coolant temp sensor, which is read by the PCM. Hopefully you don't get to this point, as I assume your temp gage is working. Let me know if you have questions.

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    Oct 27, 2010 | 2003 Pontiac Sunfire

    1 Answer

    Will not start and checked fuel pump no power to fuel pump i also have blown fuse for ecmb that blows as soon as i replace it


    ECM B fuse supplies a constant 12v hot at all times to the VCM/PCM and to the fuel pump relay. The fuse is blowing telling you that there is a short to ground somewhere. Try this, take the fuel pump relay out and put a new fuse in. If it doesn't blow put the relay back in and if it blows then try a new relay. The relay may be shorted to ground internaly. Other wise you'll have to trace the wires to the VCM and the pump relay to look for a chafed wire that's contacting metal. The wire coming from the ECM B fuse is orange and has a splice in it going to the pump relay and the VCM/PCM.
    Hope this helps.....Andrew

    Mar 28, 2010 | 1999 Chevrolet S-10 Pickup

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