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glow plug relay

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Old Jun 12, 2004 | 09:00 PM
  #1  
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charlie calcote
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From: boyce LA
glow plug relay

Hello,

Can anyone tell me which relay (front or back) is the glow plug relay on a 2002 f350 Powerstroke.

Thanks,
Charlie
 
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Old Jun 12, 2004 | 10:20 PM
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From: Denton,TX
HERE is a pic.
 
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Old Jun 13, 2004 | 04:02 PM
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From: boyce LA
I have looked at this picture about a dozen times and still can't figure out if it's the front relay or the one behind it.

Thanks again,
Charlie
 
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Old Jun 13, 2004 | 04:06 PM
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It's the one with two large terminals, and two small ones. They're arranged in a large, small, large, small configuration.
I hope this helps.
 
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Old Jun 13, 2004 | 05:38 PM
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The letter "G" in "Glow Plug Relay" is directly above one of the connectors for the relay.
 
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Old Jun 13, 2004 | 08:43 PM
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I know what the relay looks like, but there are 2 that are just alike. Is it the front or the back. I don't mean to be dumb, but different folks have told me different things.

Sorry,
Charlie
 
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Old Jun 13, 2004 | 09:53 PM
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Should be the one to the front if I remember correctly. I worked on one for a friend who has a used car dealership a while back and had to replace it. The one toward the firewall is for the intake air heater, if you follow the wires you will see where it goes.

I believe the glow plug relay is taller than the intake air heater relay - they are different and there is a difference in price. If yours are identical someone may have replaced the glow plug relay with an intake heater relay to save a few $$.

Hope this helps out -- Dave / Believer45
 
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Old Jun 13, 2004 | 10:01 PM
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Thanks Dave / believer45
 
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Old Jun 13, 2004 | 10:04 PM
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Thumbs up

If you open the cover that says powerstroke on it and look straight down you will see the lid for the fuel filter, the glow plug relay will be at the 7:00 postion. You will need to remove the cover to change it.
 
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Old Jun 14, 2004 | 01:30 AM
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I can't recall if it was in 99 or 2000 Ford added a second relay to power an intake air heater located in an aluminum intake tube centered on top of the engine very near the firewall. The two relays look similar except the one for the glow plugs is about half again as tall, I would think because of the additional power required to operate eight glow plugs as opposed to one intake heater element. I do not know how Ford used the intake heater, if it was a preheat for starting or to heat intake air when it was cold out after the engine was running. The 94-97 had only one relay to operate the glow plugs and no intake heater element. I don't know if all 99 and up were equipped with the intake heater or if it was an option or part of an option package. Anyway, all this is to let you know what I found on a 2000 I was working on for a friend.

Dave / Believer45
 
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Old Jun 14, 2004 | 07:46 AM
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I think the intake heaters were standard.
 
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Old Jun 14, 2004 | 01:50 PM
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Originally Posted by 78fordman
I think the intake heaters were standard.

I do too but was/am not sure.


Anyway, there it is.

Dave / Believer45
 
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Old Jun 15, 2004 | 08:33 PM
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From: boyce LA
Thanks guys
 
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