Glow Plug Relay Replacement - 7.3 Powerstroke

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► Motorcraft DY861 Glow Plug Relay : amzn.to/2HJboNR
► Digital Voltmeter : amzn.to/2EQM5rx
► Test light : amzn.to/3FYUbh6
► Craftsman tools I use : amzn.to/3T5t34p
The Glow Plug Relay is a common failure point on the 7.3 Powerstroke diesel engine. My 2002 Ford F250 has suffered a GPR failure and in this video, I will show you how to test it AND replace it! The Glow Plug Relay is critical to starting a diesel engine during cold weather, as it sends power to your glow plugs in order to heat up the engine cylinders.
Check out my other Ford F250 7.3 Powerstroke videos below!
► Upgrade Your Tow Mirrors : ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ieRJQ2tzn88.html
► S&B cold air intake : ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-X2OnyeRXVN0.html
► MBRP 4" Exhaust : ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-IzkZUxBhtkE.html
► 7.3 Oil Change : ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-65g_LOKHp0Y.html
► Mishimoto Transmission Cooler Upgrade : ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-959HoaMbjuc.html
► 7.3 Fuel Filter Change : ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-_SCUt9MqL5I.html
► F250 Stereo Upgrade : ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-WfWpWhJ80K4.html
► F250 Heater Core Bypass : ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-kkEqz5P0M5c.html
► Trailer Brake Controller : ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-5UHx_FK6IeM.html
► Legendary 7.3L Powerstroke diesel : ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-aLcdKsXR8sQ.html
Subscribe to my channel for weekly videos of my Time Attack BMW e36, racing videos, car modifications, Ford Powerstroke upgrades, and more!
► Follow me!
Instagram: thebtrjustin
Website: btrgarage.com
Facebook: TheBTRGarage
00:00 Introduction
01:10 Glow Plug Relay location
01:38 How does the GPR work?
02:59 Testing the Glow Plug Relay
05:29 Disconnect batteries
05:40 Remove nuts on Glow Plug Relay
06:12 Busted terminal on the GPR!
07:11 Taking out GPR
08:13 Installing new Glow Plug Relay
09:48 Testing new GPR
11:12 Test start of the truck with new GPR
11:47 Conclusion
BTR Garage is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.

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29 май 2019

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Комментарии : 156

@icallbs4613 3 года назад

Just replaced mine, 99 f350 with a whopping 66,232 miles. Bought it bran new in 2000, it's entire life has been in my steel building unless it's time to go camping lol

@tysonkennedy2252 2 года назад

Reference your name

@richerwatai9625 2 года назад

Good job. Right on!!!!!

@BigBobBlazer 3 года назад

I have never seen a 7.3 engine bay that clean and free of oil everywhere lol. Kuddos. Thanks for the video, well done.

@TheBTRGarage 3 года назад

Thank you! It's not quite that clean anymore these days :D

@chrisrussell8903 3 года назад

I wish so bad that I would have watched this before paying a garage to do it for me. That was so simple. Great video!

@brianwalters8302 9 месяцев назад

Great video. Im still on my original GPR. 23 YEARS OLD. Had truck since new. 100,000 miles.

@TheBTRGarage 9 месяцев назад

Nice, that one sounds like it is holding up good 👍

@robinbecker7945 4 года назад

Great videos Justin.. Great lighting, good clear camera views (IN FOCUS) and you explain the procedures excellent.

@TheBTRGarage 4 года назад

Thanks!

@nicholasdeluca3580 Год назад

REALLY great video. I realize that this is a simple fix, and thank you for not making us "non mechanics" feel stupid for ... NOT being mechanics ! To many video creators exaggerate and inflate their greatness. I appreciate that you speak clearly without a bag of marbles in your mouth. I subscribed and look forward to more of your videos. Thank you. Nick

@TheBTRGarage Год назад

Thank you for the feedback, I do appreciate it! I try to make my videos easy for anyone to understand, regardless of mechanical background, so that is great to hear it is working and helping :)

@jacobhillanbrand7988 3 года назад

Excellent description. My truck isn't starting and I just purchased 2 new batteries. I'm gonna check my relay next. Thanks for the info.

@TheBTRGarage 3 года назад

You're welcome! Glad the video could help.

@myleshansel7950 5 лет назад

Same exact thing happened to me, GPR went bad and when taking it apart the glow plug side post snapped off. Great video keep em coming

@UberKrispy 4 года назад

11:33 that's the sound we ALL like !!

@ryanmanthe4766 4 года назад

This right here is a great video. You were very detailed and explained everything so well. This will definitely help me out with my 02 7.3! Thank you so much.

@andrewturner7424 2 года назад

Does the relay sit on rubber boots or flush on metal

@markpuckett4880 10 месяцев назад

Sits on bare metal no rubber as the relay is grounded by the bottom metal plate making good solid contact with the engine. Nothing should be in between the relay and the block or the relay won’t be grounded and therefore will not conduct electrical current. Stay safe and unhook those negative cables from the batteries.

@Benfoxmra95 4 года назад

Everyone should note below what was missed in this video as other potential failures: what was missed was a scenario where the signal wires to the glow plug relay may not be working. If the relay does not get key on power to the red wire (one of the two smaller terminals on the relay) then this will not activate the relay. Or If the other smaller terminal wire is not grounded by the glow plug controller, the relay will not work either. The glow plug controller will ground the smaller wire when it wants to activate power to the glow plug relay to send power to the glow plugs. A break in the wire will cause the relay to be inop or a bad glow plug controller may not be signalling the relay to engergize. Just because there is no power OUTPUT on the large terminal when key is switched on does not necessarily mean its for sure the relay.

@TheBTRGarage 4 года назад

Thanks for filling in the blanks! Good info 👍

@iRockGamingHD 10 месяцев назад

Where is the controller on an engine like this? Mine has this relay but i dont spot the controller anywhere

@andrewmiller37 4 года назад

Well informed video man, and really helped me to get my truck going. Thank you.

@TheBTRGarage 4 года назад

Glad it helped!

@fredflinstone4450 3 года назад

thanks very much, helped me out, 2002 7.3 now starts in north idaho!

@TheBTRGarage 3 года назад

Awesome!

@austinyeoman8237 Год назад

good video man , having some starting issues with my 7.3 gonna use your video library to help fix the problem. Thank you

@TheBTRGarage Год назад

Hopefully the videos are helpful!

@austinyeoman8237 Год назад

@@TheBTRGarage For sure, I just replaced the relay and the truck fired right up. I definitely appreciate the direction.

@robinbecker7945 4 года назад

By the way, I have a 2001 7.3 f350 with 400,000 miles and going strong.

@teichholtz 2 года назад

Good video, you get points for not spending three minutes show us your dog or talking about the weather. My power lead terminal broke exactly as yours did. These relays do not hold up well,

@TheBTRGarage 2 года назад

Thanks!

@jasonmiller6371 6 месяцев назад

Very helpful video, I have a 2001 that's had trouble starting when its colder, the glow plugs were replaced only 2 years old, but I will test the voltage on the relay out and see if it solves problem. Thanks!

@TheBTRGarage 6 месяцев назад

Glad to help!

@oldmanandabus 2 года назад

I got a code on my buss for low voltage on both banks so I figured this had to be it and sure enough, dead as a door nail. Thanks for instruction.

@TheBTRGarage 2 года назад

Ooh nice that you got a code. I never had any indication other than rough/no starts. Glad to help!

@willrisher6049 3 года назад

Thank you for yet another helpful video, already put on my s&b and MBRP 4 in straight pipe

@TheBTRGarage 3 года назад

Awesome! Those are great upgrades, look at a tuner next!

@27ScoutSniperSully Год назад

Thx for the vid. Very descriptive and easy to follow. Now I can fix my truck. ‘02 ford 7.3

@Mrfilmmakerman 4 года назад

Thanks for the extremely detailed video man! Replaced my relay and she started right up!

@JustinLaps 4 года назад

Awesome, glad the video helped out!

@DogDaze66 2 года назад

Keep your video’s going, very very informative! Thank you.

@TheBTRGarage 2 года назад

Thank you! I ha e a couple more truck videos coming soon 😁

@cruzmascorro537 5 лет назад

Good video on 7.3 stuff!

@livingyourbestlife711 3 года назад

this was a great share. Thank you for sharing your knowledge. Love my 1999 7.3L PS.

@TheBTRGarage 3 года назад

Glad you enjoyed it!

@1JanssenH 4 года назад

Great video, my relay came out just like yours- broken bolt and all. I was not surprised or anything, just prepared, thanks for the tutorial!

@TheBTRGarage 4 года назад

Glad to hear the video could help!

@tombandy8228 8 месяцев назад

Very good and extremely helpful for my 7.3, Thank you

@TheBTRGarage 8 месяцев назад

You're welcome, glad it was helpful!

@wa2436 3 года назад

Thanks for the help! Clear and to the point!

@TheBTRGarage 3 года назад

Glad it helped! Thanks for watching!

@andrewmiller37 4 года назад

Keep doing the good stuff buddy. Cheers,

@TheBTRGarage 3 года назад

Thanks, will do!

@robfairfield17 4 года назад

I love the video, great job explaining it. Excellent job

@TheBTRGarage 4 года назад

Thank you!

@Shanemane13 Год назад

Awesome video, very well made and helpful

@TheBTRGarage Год назад

Thanks! Glad it helped!

@davidmafileo3249 3 года назад

Justin the constant power to my relay is only reading 9 volts.. the battery is reading 12. I put the truck into the on position and the other terminal had a 0 reading. This is a bad relay correct? Just double checking! Great video

@TheBTRGarage 3 года назад

That's what it sounds like.

@leavenotrace8890 9 месяцев назад

How are you buddy? I have a question for you... On one side of the relay (HOT)I get 12.6V but on the other side once I turn the key it only give me 10.6V why is that? Is 2V different. I have not checked the Glow plug yet! Thank you...

@advancedbuildingsolutions9170 Год назад

Thank you! Very helpful!

@TheBTRGarage Год назад

You're welcome, glad it was helpful!

@christopherrodriguez5442 2 года назад

Great video 🔥

@anthonyburkman2463 2 года назад

So what is the relay in front of your glow plug relay?…is a glow plug relay and glow plug control module the same thing?

@TheBTRGarage 2 года назад

That other relay is for the air intake heater.

@kemonary Год назад

Great video, did you have check engine on. Mine did with p0381. Do you think this is the problem? TIA

@TheBTRGarage Год назад

Thanks! I did not have a CEL when I had this problem, just the issues with starting the truck.

@bradleypatrick9253 2 года назад

Like the video explains very well

@danyoungren862 3 года назад

Was your check engine light on? Did you have any error codes (I currently have p0671, p0673, p0675, p0677)

@TheBTRGarage 3 года назад

No CEL and no codes.

@kemonary Год назад

My check engine is on with p0381 code. Did you get your fix? Please help

@danyoungren862 Год назад

@@kemonary most likely a short somewhere, or a loose wire

@s96551 2 года назад

Great video Justin - what did you end up using to replace the dried-out boot that cracked on the power line going into the relay (6:00 in the video)?

@TheBTRGarage 2 года назад

Thanks! I was not able to find anything to replace that little boot, unfortunately. I did put a small rubber cap over the bolt head, that's about it.

@balogunolurotimiidowu3553 3 года назад

Excellent thanks Justin

@TheBTRGarage 3 года назад

No problem, hopefully the video helped!

@ALT_RIGHT 2 года назад

Excellent

@AmericanOne9621 8 месяцев назад

Why loosen the ground wire to replace the GPR instead of the hot wire?

@daviddilley538 5 месяцев назад

Have a ‘99, with 450,000 mi… sometimes hard to start, especially in cooler weather… is the glow plug relay a gradual fail or all/or nothing? Have often had to cycle the glow plugs several times to get it to start and sometimes have to use ether(I know I know)….so what is more likely: the relay or the plugs, or both? Or operator error….?

@TheBTRGarage 5 месяцев назад

You can test the GPR using my process in the video, try that. Do you have a block heater? Try that as well in the cold and see if it helps. If it does, relay or glow plugs could be dying. Also, batteries could be losing cranking power if they're old. GPR is a relatively cheap part, so you could just replace it and see what happens too.

@1806StoneHouse 2 года назад

I just did this too 👍👍👍

@pwpolitical3768 4 года назад

Great video; thank you. Just to be sure, there is no polarity on that relay; the post with constant power could be either side/ copper post, correct? In other words, either way/ direction I install it will be correct? I purchased a Western Plow 4 post relay from Amazon( part #684-1221-212) because I have been told they are much more durable than the Motorcraft relays. Thanks!!

@TheBTRGarage 4 года назад

Sure no problem. I think you are correct with the direction/polarity. I just put mine back together the exact way I removed it with the same wires. I looked at that GPR as well but since this was the first one I've replaced I thought I'd go with OEM and see how it lasts.

@giegiofoncho 4 года назад

The best video ever .thanks god bless you

@TheBTRGarage 4 года назад

Most welcome 😊

@alzaidi7739 Год назад

Ok. One of the relay hold down nuts rusted and the bolt is spinning. Easiest way to get it out?

@smarternu 3 года назад

Common failure. Electrical resistance most often manifests as heat. Heat kills components like that relay. Ford often switches those with a negative connection so if you wire a manual glow switch run it from the negative leg.

@RoadKen53 2 года назад

Old one looks like an OEM relay. The post on mine is broken too.

@jaredmembreno8287 4 года назад

Same thing happen to my 7.3 2000 Went and got a new one in the truck came back change the relay and I don’t have 12 volts on the other side what else should I check ?

@MikeKerr-n9f 9 дней назад

What is the name of the other relay by the glow plug relay on the 1999 7.3diesel and what is it for

@TheBTRGarage 9 дней назад

@@MikeKerr-n9f that one is the air intake heater relay.

@stedebonnet1340 3 года назад

Just to confirm the relay was dead, shouldnt you have also checked for command power coming in to the relay via the small terminals? It could keep you from replacing a GPR that isnt dead.

@BigBobBlazer 3 года назад

Yeah his GPR needed to be replaced regardless.

@notajp 2 года назад

Always want to check power and ground on the control side as well. PCM grounds the coil, so one small terminal should have power all the time, the other should be grounded when the key is turned on. Should always verify before firing the parts cannon.

@radarnj8043 4 месяца назад

What is the other relay in front of the glow plug relay?

@jameseast9564 4 года назад

I’m changing my glow plug module soon and want to know whether or not I need to use a memory saver on my 15’ ram while the battery is disconnected.

@TheBTRGarage 4 года назад

Not sure on the Ram, my guess would be no.

@nigelrudlin9652 9 месяцев назад

My original GPR is taller and has anti vibration feet that are straight across from each other, not at a 45 Degree ...and I do no have that 2nd component you have. Any thoughts on that? I'm original owner with 483k

@TheBTRGarage 9 месяцев назад

What year is your truck? Could be variations of them between years.

@nigelrudlin9652 9 месяцев назад

2002, @@TheBTRGarage

@22TheJuggernaut 4 года назад

I just bought a new relay and it was alot taller like whatever that thing next to the relay is. It has different threading for the bigger bolts but the box says 12v relay... my truck starter but then it didnt for a couple cranks. I moved it around a little along with the other relay lookin thing and it moves alot like it's not bolted down, then and it started. I'm confused

@swtnlnly 4 года назад

Autozone $54, Oreilly's $54, Advanced Auto $24, NAPA $19.99

@peterm3964 3 года назад

Good job

@pressedearth9492 2 года назад

Thank you.

@TheBTRGarage 2 года назад

You're welcome!

@2007tacoma 4 года назад

Just opened the hood of my 2002 f250 7.3 and I do not have this relay. I have that front one you point out in the video but this one is not there. I'm not sure why my truck is different than yours?

@doo-zranch7795 4 года назад

ImAnOtter you probably have a glow plug control module. California emissions I believe. Google it for pics.

@FarrbeyonddriveN1 4 года назад

What about signal for relay on from ignition.. ?

@TheBTRGarage 4 года назад

Are you talking about the 2 smaller terminals on the GPR? Yes, I should have shown and tested that as well for a complete test. But, I didn't think about it at the time because my problem was immediately apparent.

@timidater4803 3 года назад

How did that hot shot sticktion stuff work?

@TheBTRGarage 3 года назад

Hard to tell exactly over the long term. The truck did feel like it ran smoother after that, cold start was not quite as tough.

@timidater4803 3 года назад

@@TheBTRGarage thanks!

@baltazar514 2 года назад

same thing happened to mine. how did you fix it? I'm struggling to get the nut loose

@TheBTRGarage 2 года назад

One of the GPR terminal nuts? You can use some PB Blaster to help break it loose : amzn.to/3O1MQiR

@baltazar514 2 года назад

@@TheBTRGarage thanks! I'll see if I can buy some from the auto parts store

@TheBTRGarage 2 года назад

@@baltazar514 Yea they should have it, or Home Depot, Lowe's as well. Might not be PB Blaster specifically but some kind of penetrating oil 👍

@baltazar514 2 года назад

@@TheBTRGarage even soaking it for a few days doesn't seem to help. Idk if it's somehow melted together, but I think my only option is doing some electrical wiring now

@TheBTRGarage 2 года назад

Oof that sucks. I know that stuff can get really hot when shorted out, my GPR was melted in places too. Good luck!

@fernandoavila6998 2 года назад

Good video

@TheBTRGarage 2 года назад

Thanks!

@danpixley2254 4 года назад

tested it like you did. have 12v at the battery terminal nothing on the glowplug side with key on. replaced relay with motorcraft relay. still get the same thing. doesnt ever get power to the glow plug leads

@TheBTRGarage 4 года назад

Ouch, sounds like you have a wiring issue. Might have to trace them back starting at the GPR leads and see if you find anything.

@mrgraphics5066 4 года назад

My solenoid smoked is it bad I do have power going to it and no power when key is off and power going to both when key is on

@arturorangel1710 4 года назад

Owesome video👍

@179joshua 5 лет назад

Why don't you check the signal wire to make shore it's coming in from ignition

@alexeisenhardt9299 10 месяцев назад

Thank you sir

@TheBTRGarage 10 месяцев назад

Welcome! Hope it was helpful.

@mrgraphics5066 4 года назад

Am I supposed to have power to all 4 terminals on glow plug solenoid

@pintaco4299 4 года назад

No. One small is ground the other small is the trigger. One large is constant the other large is only powered when the trigger is getting power.

@migueltorres7694 3 года назад

tks video

@soolgalaxy3560 4 года назад

Tengo una Ford f250 y no la puedo Aser prender crema que son los precalentadores porque ase como que va ensender pero no ase la última función

@fordnut4914 4 года назад

Will the light still act like it's working properly if it turns on can the relay still be bad.?

@JustinLaps 4 года назад

Yes, that is what mine was doing and kind of how I figured it was bad. I'd let the wait to start light run it's cycle then wait even longer. Still nothing would work. Testing it like I showed is the best way to find out if the GPR is good or bad.

@fordnut4914 4 года назад

@@JustinLaps ok ty for the reply.

@teichholtz 2 года назад

I just read in another diagnostic manual that the WTS light will come on with each key turn regardless if the PCM turns on the glow plugs. This seems nuts to me.

@h2ohfowl408 3 года назад

Is it the same for a 97 7.3?

@LemonySnicket-EUC 2 года назад

Yes

@Theuberscooter 11 месяцев назад

What is the other Relay?

@TheBTRGarage 11 месяцев назад

It's the air intake heater relay.

@dimos15 5 лет назад

what happend to your bmw?

@TheBTRGarage 5 лет назад

I still have it, videos on that coming soon. It's a bit different now 😁

@joshstaggs7754 3 года назад

What is the relay for in front of the gpr that you said isn't it ?

@TheBTRGarage 3 года назад

I believe that is the air intake heater relay. Do a search for "7.3 AIH relay" and should provide some info.

@RockDude84 4 года назад

Wish you opened your eyes more

@ericrkell4073 3 года назад

I don't think this guy knows how a glow plug relay even works at all because that did not explain how it works and also did this guy know that your diesel ignites from the heat of the compression

@TheBTRGarage 3 года назад

This guy does know these things. This shows you how to test and replace a GPR, pretty accurately. You are welcome to provide any corrections or recommendations....

@ericrkell4073 3 года назад

@@TheBTRGarage call just figured you would have mentioned that the PCM after checking the temperature of the oil the PCM sends a ground to the little wire there on the glow plug solenoid and that's what actuates it since it already has a constant heart then you put the key forward another little wire hot and then the PCM grounds the other little wire is how that

@teichholtz 2 года назад

@@ericrkell4073 I see where you are coming from with regard to PCM controlling the GPR, but the gist of this video was replacing the relay. Yes, for completeness the author could have added in that the way the GPR gets activated is 12 volts applied switched on by the PCM to the smaller terminal (the one closest to the firewall). The PCM checks the engine oil temp and barometric pressure and decides if the glow plugs are needed. If they are 12 volts is applied and the relay fires and the glow plugs get power.