Notices
Pre-Power Stroke Diesel (7.3L IDI & 6.9L) Diesel Topics Only

charging guage issue

Thread Tools
 
Search this Thread
 
Old Nov 2, 2009 | 06:33 PM
  #1  
fixitman1310's Avatar
fixitman1310
Thread Starter
|
Senior User
Joined: Oct 2009
Posts: 193
Likes: 0
charging guage issue

hey guys. i need help with my charging guage. when i start the engine
the glow plug relay cycles on and off as normal. my charge guage goes
up and down when the relay cycles on and off. the guage returns to
14 volts after glow plug relay is done cycling. i replaced the battery
cables and starter relay. what else could cause this thanks alot
 
Reply
Old Nov 2, 2009 | 06:46 PM
  #2  
dyoungen's Avatar
dyoungen
Posting Guru
Joined: Aug 2006
Posts: 1,049
Likes: 0
From: Perry Georgia
Sounds normal to me. Glo plugs pull a lot from the system when they are on.
 
Reply
Old Nov 3, 2009 | 09:06 PM
  #3  
Dave Sponaugle's Avatar
Dave Sponaugle
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 16
From: Nutter Fort, WV
Club FTE Silver Member

If the glow plugs are within spec ohm wise, .5 to 1 ohm, they draw between 192 and 96 amps respectfully when heating.
 
Reply
Old Nov 3, 2009 | 09:58 PM
  #4  
FORDF250HDXLT's Avatar
FORDF250HDXLT
Fleet Owner
Joined: Jul 2006
Posts: 20,388
Likes: 849
From: Mi'kma'ki
yeah,and Dave just explained that cycle to me the other day.
after the WTS light goes out,there is a short time where you hear the relay clicking,well what this is,is keeping your gp's warm,waiting for you to start the engine.thus the reason durring this time,for the volt meter to bounce up/down cus its sending that high juice to your gp's.
so really,to help keep your cranking power/battery life,it then appears logical to start the engine right away to get the batteries charging once the WTS light goes out.

but in short.like Dave says,its normal.so run her.
 
Reply
Old Nov 7, 2009 | 08:33 AM
  #5  
fixitman1310's Avatar
fixitman1310
Thread Starter
|
Senior User
Joined: Oct 2009
Posts: 193
Likes: 0
the volt meter jumps from 14 volts to 8 volts up and down after i start the engine
until the glow plug relay stops clicking. my first 93 diesel. is this normal

thanks
steve
 
Reply
Old Nov 7, 2009 | 08:37 AM
  #6  
fuzzy1626's Avatar
fuzzy1626
Cargo Master
15 Year Member
Joined: Feb 2007
Posts: 2,477
Likes: 21
From: Taylorsville, NC
Originally Posted by fixitman1310
the volt meter jumps from 14 volts to 8 volts up and down after i start the engine
until the glow plug relay stops clicking. my first 93 diesel. is this normal

thanks
steve
Yes.
 
Reply
Old Nov 7, 2009 | 02:07 PM
  #7  
wreckinball's Avatar
wreckinball
Postmaster
Joined: Apr 2009
Posts: 4,086
Likes: 1
From: Malahat/Cowichan Valley
that is your trucks way of saying "hey i work fine!" If it wasnt clicking at all then you would have a problem. Any issues starting?
 
Reply
Old Nov 7, 2009 | 02:39 PM
  #8  
bill11012's Avatar
bill11012
Modular motor junkie
Joined: May 2009
Posts: 6,190
Likes: 8
From: Texas
Originally Posted by fixitman1310
the volt meter jumps from 14 volts to 8 volts up and down after i start the engine
until the glow plug relay stops clicking. my first 93 diesel. is this normal

thanks
steve
I am used to gassers and I was not happy to see that at first, but you get used to it.
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

 Verdad Gallardo
story-1

Top 10 Fords at 2026 Carlisle Ford Nationals

 Joe Kucinski
story-2

3 Best / 3 Worst Parts of Modern Ford Ownership

 Brett Foote
story-3

10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

 Pouria Savadkouei
story-4

Every 2026 Ford Engine Explained

 Brett Foote
story-5

10 Ugly Ford Trucks That We Still Kinda Love

 Joe Kucinski
story-6

10 Things Every Truck Owner NEEDS (2026 Edition)

 Michael S. Palmer
story-7

Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

 Verdad Gallardo
story-8

Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

 Joe Kucinski
story-9

2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

 Brett Foote
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
fifty-two_f1
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
33
Dec 1, 2019 08:20 PM
luvemhot
1999 - 2003 7.3L Power Stroke Diesel
8
Oct 23, 2012 10:12 AM
pbgsho2
1999 - 2016 Super Duty
1
May 15, 2012 04:40 AM
caney
1999 - 2016 Super Duty
2
Dec 22, 2009 08:38 PM
curtisch
1999 - 2003 7.3L Power Stroke Diesel
19
Oct 1, 2007 01:02 PM




All times are GMT -5. The time now is 08:32 AM.

story-0
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level

Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.

By Verdad Gallardo | 2026-06-12 11:01:55


VIEW MORE
story-1
Top 10 Fords at 2026 Carlisle Ford Nationals

Slideshow: Top 10 Fords at 2026 Ford Nationals

By Joe Kucinski | 2026-06-09 11:10:08


VIEW MORE
story-2
3 Best / 3 Worst Parts of Modern Ford Ownership

Based on years of owning multiple modern Ford products.

By Brett Foote | 2026-06-09 10:53:36


VIEW MORE
story-3
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches

SPONSORED: From muddy boots to rain-soaked cargo, these upgrades address some of the most common frustrations Ford truck owners face every day.

By Pouria Savadkouei | 2026-06-08 18:50:34


VIEW MORE
story-4
Every 2026 Ford Engine Explained

Here's everything you need to know about every Ford engine available for the 2026 model year.

By Brett Foote | 2026-06-05 12:58:01


VIEW MORE
story-5
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-6
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-7
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-06-03 11:38:36


VIEW MORE
story-8
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-9
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE