glow plug relay
Hotshot
Joined: Jan 2002
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From: La La Land
See Post#11 in this thread:
https://www.ford-trucks.com/forums/4...-to-start.html
It's one of the two on top of the motor, just behind the "Powerstroke" cover.
The one that has the terminals with the wires that look like the photo's.
Pop
https://www.ford-trucks.com/forums/4...-to-start.html
It's one of the two on top of the motor, just behind the "Powerstroke" cover.
The one that has the terminals with the wires that look like the photo's.
Pop
Postmaster
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Check out the master of write-ups in these here neck of the woods http://guzzle.rbmicro.com/index.html on this site you'll find the GPR write-up.
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ah i c. well how do i monitor it to see if it working? it was running the other day. it was warm. i had the truck i shut it off. an tryed to see if there was any voltage at the relay. there wasnt.. but when the truck is warm the relay shouldnt be on to activate the glow plugs correct?
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Laughing Gas
Joined: Jan 2006
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From: Gig Em, Tx
one way to tell is by putting a voltmeter across a battery. The glow plugs will pull the voltage to around 11 volts with engine off and glow plug circuit on.
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Smokin
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Originally Posted by jt559
ah i c. well how do i monitor it to see if it working? it was running the other day. it was warm. i had the truck i shut it off. an tryed to see if there was any voltage at the relay. there wasnt.. but when the truck is warm the relay shouldnt be on to activate the glow plugs correct?
Relays activate when you turn your key to the "on" position. The relay will remain on for up to two minutes, providing power to your eight glow plugs. Your relay will not be on when the truck is warm when you are driving.
The relay has two posts. One is constant power, and one has power only when your key is in the on position. It will be obvious which is the constant. If you have a meter, you can check the power to the large posts on the relay. One will have constant current, and one will not have current. Have someone turn the key to the on position and check the current going through the second post. If you suddenly get current, your relay is working. If not it's fried.
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Should The relay be open when the "Wait To Start" light goes off? Or will the glow plugs be on for a little bit after the truck starts?
If you turn the key to the second position, and the light goes out, but you don't start it will the glow plugs continue to glow?
Kyle
If you turn the key to the second position, and the light goes out, but you don't start it will the glow plugs continue to glow?
Kyle
Post Fiend
Joined: Jun 2006
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From: Central, Al
The glow plugs are not tied to the WTS light. They are energized at key on is oil temp is below 167*F (I believe) and depending on air temp and BARO pressure remain energized up to 120 seconds
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