Question about 1992 Ford F250

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Not getting power to the glow plugs - 1992 Ford F250

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Check the glowplug relay on the firewall driver side tward the center

Posted on Dec 30, 2010

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Hiace starting problems


Is the battery in a good condition, it a diesel engine? If so the glow plugs would be the first point of call. Check for power at the glow plug main wire feed, if you have power there then a wiring fault can be ruled out. If not check your glow plug relay and associated wiring. If you have power, I think from memory its only 11 volts, remove the power balance rod that runs across the top of your glow plugs. Then remove the glow plugs and connect them across a battery hold the threaded body of the glow plugs and the negitive terminal and use a piece of wire to connect the small fine threaded end to the positive terminal on the battery. The glow plug should glow a hot bright red within a few seconds of being connected. If it doesnt it is faulty. 1 faulty glow plug puts strain on the other glow plugs. Id replace all 4 if any are faulty. I hope this helps.
tyl

Mar 18, 2014 | Toyota Cars & Trucks

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Diesel has trouble starting


hi, if you have any problems starting any type of diesel engine then this is a very good indication that one or more of the glow plugs need replacing, to get you home you can try turning the ignition on and then wait for the glow plug light to go off then instead of trying to start the engine turn it off then back on again, doing this usually gets it started just to get you home but this wont allways work.

Its best you replace glow plugs sooner rather than later as it could leave you stuck without a vehicle.

To change the glow plugs follow these quick instructions.
1. Look where the injectors go into the cylinder head then just under these you will see a smaller plug that will have a fixed wire this wire will be running from glow plug to glow plug this wire is held onto the glow plug by an 8m nut undo this nut on top of all the glow plugs, once undone you will notice that one of the glow plugs has two wires the other wire is the wire that carries the power to all the glow plugs so just remember witch glow plug this goes to.
2. now once you have removed the connecting power wire remember witch way it runs so as to get it back on the right way round it doesnt matter to much but might be a bit tight if you put it on the wrong way round.
3. Now how to undo and remove the glow plugs: To remove you will need a deep 10m socket place this over the top of the glow plug push down to ensure tight fit then undo this glow plug will then pull out (make sure their is no muck around the glow plug that can fall inside the cylinder so just check)
once you have it out its best you replace all the glow plugs as once one goes you will find that the others wont be to far behind.
4. Fitting new glow plugs. When your fitting the new glow plugs put them into their hole and gently screw in by hand to make sure you dont cross thread the thread as this can be a nightmare to put right. tighten the glow plugs in as much as you can by hand then nip them up using 10m socket and extension bar now dont over tighten them as this will damage the thread just tighten up till just after they stop then you should find they are ok.
Refit the wire loom on top of all the glow plugs remembering to fit the main power wire to the first plug make sure you tighten the nuts up properly on top holding the wire in place.
Once you have done this you are now ready to start your vehicle you should now find it starts with no problems.

If you still have problems starting you need to now start looking at things like the diesel filter or even the diesel pump, ill explain about these in my next post ok

on Dec 01, 2009 | Ford F-350 Cars & Trucks

1 Answer

Wiring diagrams


Check for power at glow plug, connect meter to earth and wire feed to plug, should get a 12v feed, if you get a feed the plug is duff. You can remove the plug and test for an Ohm's resistance, no resistance it's broken! If you have a power supply then it is possible the glow plug relay is not working. Follow the cable from the glow plugs, this is generally a thick 30/60 amp cable, the relay is larger than other relays and not in the fuse box, possibly on the bulkhead or inner wing because of the power it has to transfer. DO NOT DIRECT POWER FEED THE GLOW PLUGS, You can burn them out!

Dec 28, 2013 | Cars & Trucks

1 Answer

The glow plugs only get power to them on-off on-off on-off on-off, twice per second if the engine is not absolutely cold (overnight). If I switch off ignition and then turn back on the glow plugs come on...


Faulty Glow Plug switch may be the answer but I am not that up to date regarding that vehicle but makes sense to myself. Best Wishes, Malcolm Campbell.

Jun 20, 2017 | Vauxhall Cars & Trucks

1 Answer

Glow plug light in cab do not light up and engin do not start


check the relay for the g-plugs as it is not supplying power to the glo-plugs. Check that there is power getting to the relay to energise it to get power to the plugs.. Probably a fuse is blown

Nov 22, 2013 | Tata Cars & Trucks

1 Answer

1998 jetta TDI glow plug dash light comes on for only one second


HAVE YOU CHECKED WHETHER THE FAULT IS ON THE GLOW PLUGS RELAY?

Nov 08, 2012 | Volkswagen Jetta Cars & Trucks

1 Answer

Glow plug maybe out on 2005 f350 king ranch


2 ways to check 1) have key out of ignition, remove glow plug power rail, get ohm meter on top of glow plug where rail bolts on & base of plug where you bolt it in. check all plugs & should be similar. 2) remove plugs & hook jumper leads to battry, connect - jump lead to base of plug where it screws into the block, touch tip of plug where power rail bolts on with the + jumper lead but do not touch the heating element of the plug extremely hot extremely quick. hold power on for 5 - 7 sec until glow bright red. repeat with all plugs (faulty ones will take longer to glow or not glow at all)

Jul 14, 2012 | 2005 Ford F 350 Super Duty

1 Answer

Getting a P1391 error code on my 01 Caravan, Changed PCM Sensors, wires, plugs, EGR, Whats Next? Please


P1391 Glow Plug Circuit Low Input (Bank #1)
  • DTC P1391 or P1393 will set when the monitor indicates that all four glow plugs are not being powered on that bank. An open in the glow plug circuits, glow plug relay, glow plugs or monitoring circuit could be the possible causes.

    Both DTCs P1391 and P1393 together will set when the monitor indicates that all eight glow plugs are not being powered. An open in all glow plug circuits, the glow plug relay, glow plugs, fusible links or all three monitoring circuits could be the possible causes.
  • Possible causes:
    • glow plug relay
    • glow plug shunt
    • open in glow plug circuit(s) or monitoring circuit(s)
    • glow plugs
    • PCM
__________________

May 19, 2011 | Dodge Grand Caravan Cars & Trucks

1 Answer

The glow plug light is constantly on the dash on my peugeot


check the glow pulg relay, this may be bad, i would start there first,once the car is started theres no need for glow plugs they are used to start the car and thats it,when the light is on test to see if the glow plugs are getting power if so check the wiring and relay,this is not good for the glow plugs to be powered up so long, that rely must be cooked.

Jun 16, 2010 | Cars & Trucks

2 Answers

Glo plugs don't heatup on first or cold start.


Test for power with test light at glow plug ,If you have power ,Replace glow plugs...If no power check cold start solenoid or glow plug timer switch... More info at parts store, library ,or come back here let us know what you find .the more you can tell us the better we can help you ,hope this help let us know....Thank You..

Mar 21, 2010 | 1997 Nissan Pickup

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