Glow plugs not coming on - Ford Powerstroke Diesel Forum
 
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post #1 of 6 Old 09-11-2018, 06:13 PM Thread Starter
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Glow plugs not coming on

I have a 96 7.3 powerstroke and I just replaced all the glow plugs, the glow plug relay, the uvc harnesses, and the valve cover gaskets. But it still won't start if it gets into the 50s or lower without being plugged in. I tested the relay and its only sending power to the glow plugs for a split second and then shutting off just like it was doing before I replaced everything. Is there something I missed that has to do with the glow plugs. I also jumped the relay with a screw driver once to make sure the new glow plugs worked and it fired right off.
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post #2 of 6 Old 09-11-2018, 08:07 PM
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I would check it with a scanner and see what your EOT reading is. Thats Engine Oil Temperature sensor on the back of the HPOP above IPR. You can check the wiring or replace it but i'd have it scanned first to see what it is reading.
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post #3 of 6 Old 09-11-2018, 08:08 PM
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Oh and welcome to the site!
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post #4 of 6 Old 09-12-2018, 05:32 PM Thread Starter
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Quote:
Originally Posted by White95f250 View Post
I would check it with a scanner and see what your EOT reading is. Thats Engine Oil Temperature sensor on the back of the HPOP above IPR. You can check the wiring or replace it but i'd have it scanned first to see what it is reading.
thanks man I don't have a scanner but aside from the glow plugs not staying on I've also noticed the RPMs will start to fluctuate in either extreme cold or a really hot day which from what I read could also be a failing EOT so I might just replace it
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post #5 of 6 Old 09-12-2018, 05:42 PM
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Wouldn't hurt to try it. Not too bad to do and not too expensive
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post #6 of 6 Old 09-12-2018, 06:27 PM

 
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Depending on how motivated you are to try and fix the issue to make it work like stock or not, you can always wire in a momentary push-button to your dash like the older 70's Ford trucks that had the push button ignition.

[SIZE="3"]For all your ford powerstroke needs. If you dont see what you are looking for on the website, please use the contact page and shoot us a message or
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Part numbers will help alot too if they are not on our site.
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