Question about 1993 Ford F250

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1993 ford f250 7.3 diesel glow plugs not working. what to do?

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Check the fuse first then check the wire harness and connection working your way back from the glow plug to the fuse box. Good luck and hope this helps. If everything is good then replace the glow plugs. 

Posted on Jul 03, 2009

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What is the problem ? I have a 1993 ford f 250 7.3 liter diesel. New Glow Plugs. Glow plug light comes on and goes out very quick , engine cranks excessively , before starting


I think you nailed it with the amount of time you glow plug light. It should stay on until you engage or it should be timed to stay on longer.

Feb 25, 2015 | 1993 Ford F250

Tip

Checking glow plugs for Ford and Chevy diesel engines


If you need to check glow plugs on a Ford or Chevy Diesel engine, run a hot wire from your battery. un plug the glow plug wire and strike the hot wire to the end of the glow plug. If you get a spark the glow plug is good. you should do this to each one, but one at a time then replace the glow plug wire as you go.

on Mar 03, 2009 | 2001 Ford Explorer Sport

1 Answer

1993 ford f250 7.3 liter diesel starting problems


It is worth ensuring the glow plugs are actually receiving current by attaching a test lamp during the starting process. Heater plug timer relays can cause problems.

A good cranking speed is necessary for good cold starting and also good injector spray patterns and break-off pressures. Bad spray patterns and low pressures, slow cranking and fuel drain-back are common problems.
Low compression pressures can also be a problem. If the other stuff has been checked and found to be ok it is worth having them tested.

Feb 25, 2015 | 1993 Ford F250

1 Answer

89 Ford E350 Diesel - two problems 1) no power to instrument cluster, 2) diesel will not fire off without starter fluid...but the glow plug solenoid does click and wait light goes off


You should never use starter fluid when the glow plugs are hooked up. It can cause severe engine damage. You probably need to replace all the glow plugs and the glow plug controller.

Jul 06, 2014 | 1989 Ford F 350

1 Answer

Starting issue, I have a 1993 ford f250 7.3l pre powerstroke. I started the motor and it stalled out like there was a short, now when i turn the key my glow plugs do not fire and wait to start doesnt show...


On some Models the glow plug Relay does not have an integrated Power Relay. This means there is a second Relay before the glow plug Relay that feeds it power.

You should check the wires running to the glow plug Relay for power with the key ON. Check some other wires off of the Ignition switch to make sure your 20 year old Ignition switch is good.

There are some sites which show vehicle wiring. Autozone has a free section after Registering your vehicle but it takes a little sorting through the Help section. There should be a fuse to protect the above Relays.

Make sure you find the Diesel-equipped wiring circuit. Diesel ignitions are different from gas units.

Dec 27, 2013 | Ford F250 Cars & Trucks

1 Answer

1993 Chey Van 30 6.2 Diesel Van. Looking Fuse block for glo plug fuse


There is no fuse. The glow plugs work on relays. If you are having trouble with the glow plug system then Haynes has an excellent manual for the Chevy 6.2. It is part # 10330, Haynes Techbook, Diesel Engine Repair Manual. It cost about $20.

Aug 29, 2013 | 1993 Chevrolet C3500

2 Answers

I have an 1993 Ford F250 turbo diesel truck that won't start. I've been told, that the glow plugs are not warming up. Where are the glow plugs and is there anything I can do to warm them up or fix? Do they...


Are you waiting after turning ignition key on before actually moving key to start position? My diesel I turn key to 1st position;bells and lights;if engine is cold an amber light that looks like a lamp filiment comes on...wait until that light goes out before engaging the starter.

Oct 18, 2010 | 1993 Ford F350

2 Answers

7.3 l diesel wont start


Bad glow plugs and/or glow plug controller. Common issue with these vehciles. Some also have harness failures. Replace all glow plugs as a set not individually.

Mar 29, 2009 | 1991 Ford F250

2 Answers

Ford Diesel glow plug relay goes out every year since 1993


The relay should cost about $35-45. A common Ford Starter relay can be used in place of the official glow plug relay. All that is required is a relay with terminals that have 5/16 or 3/8 terminals and can carry about 150-200 amps. When all 8 glow plugs turn on, it draws about 150 amps is all. There are two relays for the 7.3 diesel. One energizes the glow plugs and the other energizes a heating element in the air intake. That one is used to help eliminate white smoke while warming up and is turned on and off by the engine computer. It is usually only called for when the temperature is 20 degrees F or lower.
Otherwise only the glow plug relay works.

Dec 30, 2008 | 2001 Ford F350 Super Duty SuperCab

3 Answers

1993 f250 diesel engine won't start


it could if it was diesel, but if it is gas engine check the coil

Aug 04, 2008 | 1993 Ford F250

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