Glow Plug Amps - Ford Powerstroke Diesel Forum
User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 8 Old 12-26-2008, 07:28 AM Thread Starter
Compression Ignition Addict
 
Join Date: Oct 2007
Location: Illinois
Posts: 156
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Glow Plug Amps

I did a check on my glow plugs to see if they were working and here is the results. I used a clamp on meter and initially it went to 198 amps and then started falling off by about 10 to 15 amps until it reached 110 approx. To me it looks like its working but I couldn't find any info about whether they are supposed to decrease that fast. It makes sense to me that when heating up resistance decreases. It got about 5 below last nite and when I went to start it it was about 7 and it cranked like crazy and finally popped off. I didn't want to plug it in since I just put new interestates in and wanted to test themn good. Just thought I would see if this seems right. Thanks

2002 F-250 4x4 cc A/T
4" Magna Flow Exhaust
PHP Chip-Stock, 40, 60, 80, 100, Whisper
BF Goodrich 33s
ZooDad
Autometer Trans,
Pyro,Boost on the pillar

zeuss is offline  
Sponsored Links
Advertisement
 
post #2 of 8 Old 12-26-2008, 09:06 AM
Powerstroke Junkie


 
NCHornet's Avatar
 
Join Date: Aug 2006
Location: Mayberry, NC
Posts: 8,308
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 49 Times in 11 Posts
Feedback Score: 0 reviews
That isn't how to check your GP's, all that will show you is the GPR is working. Follow the procedure in the below link.


Troubleshooting GPR & GP's

NCH
Proud Father of USAF Airman


2000 F350 DRW,CC,LB, 4X4, Western Hauler Pkg.
Ford AIS/ BTM, FTVB
My CCV MOD, Coolant filter
06 Grill, 05 lights,6.0 trans cooler
Cyro/Hawks, JVC Touchscreen HU, JL C5's, Infinity 800watt amp,
DP tunes, 60 tow/80 e/120 race, on a SCT2 tuner
P3 controller, Brite Box Turbo Lifesaver
KMC Wheels x 4

http://s132.photobucket.com/user/NCH...=recent&page=1

Friends Don't Let Friends Drive Trucks With Generic Tunes
NCHornet is offline  
post #3 of 8 Old 12-26-2008, 10:05 AM Thread Starter
Compression Ignition Addict
 
Join Date: Oct 2007
Location: Illinois
Posts: 156
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I have read that article and it is very informative. I had read where each plug should pull about 25 amps and since I had access to a clamp on I thought it easier to check that way. I was just concerned about the drop in amps. But it sounds like a better way to go is to ohm them out so that is what I will do.

2002 F-250 4x4 cc A/T
4" Magna Flow Exhaust
PHP Chip-Stock, 40, 60, 80, 100, Whisper
BF Goodrich 33s
ZooDad
Autometer Trans,
Pyro,Boost on the pillar

zeuss is offline  
post #4 of 8 Old 12-26-2008, 10:20 AM
Compression Ignition Addict
 
cblackb's Avatar
 
Join Date: Jun 2006
Location: Columbus, OH
Posts: 459
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Well, actually if you put the amp meter on the out-going wire off the relay (the big one that feeds the actual glow-plugs) then yes that is a feasable way of checking the glow plug system operation. It obviously won't check each glow plug. Each glow plug should pull 15 to 20 amps which is approximately 0.5 to 1 ohm of resistance for each one which is the "good" range if you check them with an ohm-meter under the valve cover in the wiring harness plug. So a properly working system in theory should draw 120 to 160 amps total (not the initial spike). If it's getting lower than 120 you may have 1 or 2 plugs that are getting a high-resistance open and more than 160 amps and some of them are starting to short out. This is a good quick test just to see if the system is working but to truely sort out glow plug issues you're gonna have to go a little deeper.

2000 F-250 XLT PSD Auto Super Cab SB 4x4
Magnaflow 4" straight-piped into duals
Eclipse Sport Trucks Body and Interior Conversion
Tinted Glass
Zoodad Mod
Diablosport Chip (don't know HP)
Foil Delete Mod
DIY/6637 Intake Mod
Oilguard Bypass Oil Filtration System
CCV Mod
HPX Mod
Mag-Hytec Everything
BTS Valve Body
Cobra 29 LTD CB Radio
IAH Delete
cblackb is offline  
post #5 of 8 Old 12-26-2008, 03:56 PM
Powerstroke Junkie


 
NCHornet's Avatar
 
Join Date: Aug 2006
Location: Mayberry, NC
Posts: 8,308
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 49 Times in 11 Posts
Feedback Score: 0 reviews
Without being able to separate each individual GP wire it means nothing, except you have power going through the GPR, which is what I already stated. Takes 10 min to pull the harness and ohm out each plug, this way you are checking each one separately.
Good Luck,

NCH

NCH
Proud Father of USAF Airman


2000 F350 DRW,CC,LB, 4X4, Western Hauler Pkg.
Ford AIS/ BTM, FTVB
My CCV MOD, Coolant filter
06 Grill, 05 lights,6.0 trans cooler
Cyro/Hawks, JVC Touchscreen HU, JL C5's, Infinity 800watt amp,
DP tunes, 60 tow/80 e/120 race, on a SCT2 tuner
P3 controller, Brite Box Turbo Lifesaver
KMC Wheels x 4

http://s132.photobucket.com/user/NCH...=recent&page=1

Friends Don't Let Friends Drive Trucks With Generic Tunes
NCHornet is offline  
post #6 of 8 Old 12-26-2008, 04:12 PM Thread Starter
Compression Ignition Addict
 
Join Date: Oct 2007
Location: Illinois
Posts: 156
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I'll try and pull harness this weekend. All I have here is a analog meter, so hopefully I can get a good enough reading, or will get a digital. Will let you guys know what I find.

2002 F-250 4x4 cc A/T
4" Magna Flow Exhaust
PHP Chip-Stock, 40, 60, 80, 100, Whisper
BF Goodrich 33s
ZooDad
Autometer Trans,
Pyro,Boost on the pillar

zeuss is offline  
post #7 of 8 Old 01-29-2009, 06:07 PM
Powerstroke.org Rookie
 
Join Date: Jan 2009
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
If you have power going thru the gpr the only place it can go is to the glow plugs the amp test does test the glow plugs
andysride is offline  
post #8 of 8 Old 01-29-2009, 06:17 PM Thread Starter
Compression Ignition Addict
 
Join Date: Oct 2007
Location: Illinois
Posts: 156
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Yes it does test the plugs. But as they warm up the amps drops off. As my case I seen an initial 199 peak and then it dropped to 110 over several seconds. The only true way to see if the plugs are up to par is the resistance test. I do think the amp test will give you a quick baseline if major problem exist though.

2002 F-250 4x4 cc A/T
4" Magna Flow Exhaust
PHP Chip-Stock, 40, 60, 80, 100, Whisper
BF Goodrich 33s
ZooDad
Autometer Trans,
Pyro,Boost on the pillar

zeuss is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome