Hi everyone
Thread Starter
|
New User
Joined: Mar 2007
Posts: 7
Likes: 0
Hi everyone
I JUST GOT A 73 F100 A YEAR GO TO RESTORE AND PUT A 78 VAN MOTOR IN IT AND RUNING GOOD BUT ONE PROBLEM IS THAT THE GAUGE IS FLICKERING AND SO IS THE LIGHT IT VOLTAGE REGULATOR AND BATTERIE AND ALTERNATOR ARE NEW
Last edited by bek327; Apr 8, 2007 at 10:30 AM.
Postmaster
Joined: Dec 2003
Posts: 4,423
Likes: 8
From: Clarksville,Tn
Welcome to FTE; I'm sure others are more technicial than I and will chime in soon; but to determine your initial possible problem; I recommend checking all your ground's and to include all dash contact's; too ensure a good contact point. Hope this helps...
Mitch
Mitch
FTE Chapter Leader
Joined: Nov 2006
Posts: 21,091
Likes: 245
From: Fresno, CA.
Welcome to FTE! If it is Ford info you are looking for this is the place to be. I am no expert on electrical, but there are others on this site who pretty much know everything there is to know about Ford trucks. (Mil1ion, and Numberdummy to name just two)
New User
Joined: Jan 2008
Posts: 0
Likes: 24
First of all Welcome to FTE 
2nd: Please please in Lower case and in the FTE default font
"""""No code""""
It makes for Easier reading.
3rd) Please p[ut thr actual topic of the thread in the title.
Ie: Faulty Instrument Gauges
4th) Topic:
I presume you mean the gauge needles are acting like a fast windshield wiper?
The Ford Gauge monitering system works on a 'Pulsed power signal to a ground out.'
If grounds are bad you will get inaccurate reading.
If the pulsing power is bad you will get an inaccurate reading.
IMO that you remove the cluster and clean the Printed circuit board and the Instrument cluster Voltage regulator mount and power connection.
Follow the blue arrow to see the ICVR:
But First !
NOTE:
also test the ICVR for a pulsing power at any Sending unit connecting wire before you take the cluster out.
You should see a steady Pulse of 5 volts
2nd: Please please in Lower case and in the FTE default font
"""""No code""""
It makes for Easier reading.
3rd) Please p[ut thr actual topic of the thread in the title.
Ie: Faulty Instrument Gauges
4th) Topic:
I presume you mean the gauge needles are acting like a fast windshield wiper?
The Ford Gauge monitering system works on a 'Pulsed power signal to a ground out.'
If grounds are bad you will get inaccurate reading.
If the pulsing power is bad you will get an inaccurate reading.
IMO that you remove the cluster and clean the Printed circuit board and the Instrument cluster Voltage regulator mount and power connection.
Follow the blue arrow to see the ICVR:
But First !
NOTE:
also test the ICVR for a pulsing power at any Sending unit connecting wire before you take the cluster out.
You should see a steady Pulse of 5 volts
Last edited by Mil1ion; Apr 8, 2007 at 03:43 PM.
Senior User
Joined: Dec 2006
Posts: 408
Likes: 0
From: Emmett, ID
i actually have the same year truck and have had the same problem, and i tell u what its a pain in my rectal area....but, what i would do first is, check to see if u have any dust on the circuit board if so, get a can of air and spray it clean. then i would take the circuit board off the cluster and check for any breaks in the ciurcuits. i had some breaks in mine and it did the same thing u described. I know from experiance dealing with these things how crappy it really is to have to figure out the issue. let me know if any of this works. if not i have some more steps you can take.
Thread Starter
|
New User
Joined: Mar 2007
Posts: 7
Likes: 0
I already clean the circuit board but i did't check for breaks but i use a circuit boards out two othen trucks they did the same thing the truck are in a junkyard it more like they wear bad two
Trending Topics
Senior User
Joined: Dec 2006
Posts: 408
Likes: 0
From: Emmett, ID
well if that wasn't the issue what you wanna do next is check the fuses under the dash, there are some itty bitty fuses under there that are hard to determine if there blown bec. there so small...i woul take one out and replace it and see if that fixes the issue before you go buyin a new cluster.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Thread Starter
|
New User
Joined: Mar 2007
Posts: 7
Likes: 0
thank you, I already replace all the fuses this is the first truck i ever seen like this
someone toll me it the wireharness from the alt to voltage regulator is bad so if you think of any thing i wood like more info. thank
someone toll me it the wireharness from the alt to voltage regulator is bad so if you think of any thing i wood like more info. thank
New User
Joined: Jan 2008
Posts: 0
Likes: 24
Which gauge is flickering ?
Clean the mounting surfaces where the Voltage regulator mounts.
Clean the 3 tangs on the voltage regulator and the female connector that slides on them.
Clean the Lug and wiring harness connector where the + battery cable attaches to the starter relay.
See what happens after that.
Further to the problem.. is this just at idle or at over 1000 rpm as well ?
Clean the mounting surfaces where the Voltage regulator mounts.
Clean the 3 tangs on the voltage regulator and the female connector that slides on them.
Clean the Lug and wiring harness connector where the + battery cable attaches to the starter relay.
See what happens after that.
Further to the problem.. is this just at idle or at over 1000 rpm as well ?
Senior User
Joined: Dec 2006
Posts: 408
Likes: 0
From: Emmett, ID
