You need to lift the wires off the posts to isolate them and then read their potential with key on. The reading should be less than 0. You will be reading the voltage through the winding. Contact me on my DieselOrings. Cold the resistance of each glow plug is nearly zero. You can carefully check the resistance cold of each plug and determine which one are defective.
Its main purpose was to minimize white smoke on start up and chances are it doesn't even work anymore so ignore it. I now use the modification for all my customers with 7. We know everyones viewpoint; will be different from one another. Yes it does look like a starter relay on the 2002 model years. About the Author Based in central Missouri, Rachel Steffan has been writing since 2005. Remove the air intake and all the other stuff which gets beween you and the valve covers. Steffan holds a Bachelor of Science in agriculture from Truman State University.
I'll never have to worry about that relay again! Very common and a good start for a hard start when cold diagnosis. An affordable aftermarket alternative to high priced dealer repair parts. Wiring color code or symbols, wiring harness, radio and audio wiring, circuit diagram, light switch wiring diagram. The change is easy and its one less item for future problesm regards, ggrimes2 yahoo. The glowplugs are mounted underneith the valve covers on the 1999 7. We also have collections such as wiring diagrams, fuse boxes, engine diagrams, circuit diagrams, engine problems, engine schematics, parts diagrams, replacement parts, electrical diagrams, repair manuals, transmission diagrams etc. A glow plug control module is a requirement of California emissions regulations.
Your email address will not be published. It should have less than 0. At the end of this site there is likewise a Ford 7 3 Glow Plug Relay picture gallery, if the image over is inadequate for you. Do not replace the harness. Finally, perform a voltage drop test to check for excessive resistance inside the relay. The results of the aggregation are uploaded on this web site.
The change is easy and its one less item for future problesm regards, ggrimes2 yahoo. There is 1 plug for each of the 8 cylinders and each plug will have … a single wire connected to the top of it. Jan 09, 2010 if its gas no glow plug. This Information about 7 3l glow plug wiring diagram has been uploaded by Brenda Botha in this category section. It is located just to the passenger side of the fuel filter on my F250 2000 7. I now use the modification for all my customers with 7. The cylinder order on the 6.
Glow Plug Control Module — Ford Truck Enthusiasts Forums, size: 800 x 600 px, source: cimg1. Glow Plug Relay Wiring — Diesel Forum — Thedieselstop, size: 800 x 600 px, source: www. It has an extensive diagnostic and repair section for glow plugs in your truck, either 6. Otherwise it is working fine and you may have a glow plug problem. I replaced mine after a winter of very hard starting. Both the relay and the control module are on the passenger side engine valve cover behind the fuel filter housing, with brown and yellow wires attached.
If you attach one test lead to each of the two large terminals, the test light should come on when you turn the key in the ignition. Go to the Ford Forums and see what they have done. The wiring harness will have one branch come from the rear of the engine and two that seem to enter the valve covers. If you have a 7. You can also find other images like diagram wiring diagram, diagram parts diagram, diagram replacement parts, diagram electrical diagram, diagram repair manuals, diagram engine diagram, diagram engine scheme diagram, diagram wiring harness diagram, diagram fuse box diagram, diagram vacuum diagram, diagram timing belt diagram, diagram timing chain diagram, diagram brakes diagram, diagram transmission diagram, and diagram engine problems.
We wish to make an internet site useful for lots of people. The connectors and wire terminals are available from Ford as a kit or individually. The two large terminals are the contacts to energize the glow plugs. They are sometimes marked just for the sake of keeping things the same. I replaced mine after a winter of very hard starting. Still need the fuse panel circuit? If you want you can purchase a manual for 5.
With key on you will see battery on both with one lead to ground. I've repaired many Fords where the problem was not the glow plugs but a fried glow plug relay. If your voltage measurement there is less than. It comes from the starter relay that is mounted on the inside of the passenger side fender by the hood strut. If there is any difference at all, you have a battery ground problem. If any are open guess what you have lots of work ahead of you. Relax, if the image is not enough to help you, you can type what you are looking for on the search form.