How to test glow plug controller....
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New User
Joined: Nov 2002
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From: Woodstock USA
How to test glow plug controller....
My F-350 has always had problems keeping glow plugs working right, im always going through glow plugs, i have even had one completely melted the tip right off of it.... WHY??? all they do is run like a light right?? they ground through the threads, and get positive power fed to them, all it does is heat up.. Am I correct?? How do you test the glow plug controller to see if thats working right? Is it holding them on too long? I am so confused please help...?
Posting Guru
Joined: Feb 2001
Posts: 1,465
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From: Indianapolis
How to test glow plug controller....
Get an ammeter that clips over the battery cable and clip it onto the heavy cable that comes off the glow plug realy. The glow plugs draw about 40 amps each (times 8 is 320 amps). while you are watching the meter, have someone turn the key on and read the meter. If the relay is not working, the amperage draw will be negligible. (The relay may still "click" on but that doesn't mean it is delivering power to the glow plug system.)
Laughing Gas
Joined: Jun 1999
Posts: 903
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From: Banning CA
How to test glow plug controller....
Well depending on what year your truck is you may not hear a click, since the trucks 86 and prior use a different type of controller. You may have a bad controler but improper fuel delivery can also damage glow plugs. Let us know a little more info
Dave
Dave
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Joined: Nov 2002
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From: Woodstock USA
How to test glow plug controller....
Ok, the 2 front passenger right and the left front passenger glow plug keep dying on me, within days i dont understand what is going on
i put brand new ones in , and a day later they blow out, ive gone thru a bunch now , and it is really cold out here right now, i cant afford to keep replacing these, the injection pump is brand new, the engine has 25 000 miles on it, i dont get it please help!!!
i put brand new ones in , and a day later they blow out, ive gone thru a bunch now , and it is really cold out here right now, i cant afford to keep replacing these, the injection pump is brand new, the engine has 25 000 miles on it, i dont get it please help!!!
Senior User
Joined: Dec 2002
Posts: 109
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How to test glow plug controller....
what brand type of glow plugs,are you useing ,i get my at motor truck service,which is international motor dealership, they sell bosch ,what is standard on diesel engine, they are beru[made in germany] i paid 9.45 each/ I also call my local dealership ford, they had autolite for 23.49 each, I hear some guys have problems with they burn out to fast. I also want to learn how to test glow plug controller,
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