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Author
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Topic: Lights flickering
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Mach'ed Again
Journeyman Posts: 47
From: Kinsley, Kansas, USA
Registered: Dec 2001
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posted 10-09-2002 04:39 PM
   
Before I start buying parts, has anybody ever had all lights( int & ext) go brite-dim-brite-dim in a pretty quick rhythm and faster with rpms ? Belt is tight, alt. or volt. reg. ?  ------------------
'69 Mach I 351W FMX
'67 Cpe 302
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johnmustang
Gearhead Posts: 4504
From: Vancouver Island , British Columbia , Canada
Registered: Nov 2001
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posted 10-09-2002 04:44 PM
Battery , altenator , voltage regulator , wiring harness , short in the system. JOHN  ------------------
65 2+2 FASTBACK
68 COUPE
87 TAURUS WAGON
98 F150 XLT TRITON V8 4.6, 4 WHEEL DRIVE
Member:Vancouver Island Mustang Association
M&M #1710
MyPhotoPage
MY TRUCK
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ewokeric
Gearhead Posts: 174
From: woodbridge, va united states
Registered: Mar 2002
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posted 10-09-2002 05:07 PM
i think i would start checking for tight and good connections. Espacially grounds. Does it do it at an idle as well. Check the battery voltage to see if alt or reg is working. But the flickering would seem to be a lose connection i would think
You should have 14.5 volts at battery if reg and alt is working.Hope that helps
eric ------------------
68 mustang coupe(california special)not real though but looks it(will be nice) 351w/c4
My 68 Coupe
[url=http://mustangsamdmore.50megs.com/ewokeric.html]
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Mach'ed Again
Journeyman Posts: 47
From: Kinsley, Kansas, USA
Registered: Dec 2001
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posted 10-09-2002 06:32 PM
Batt is new 8 mos. Volt meter shows 14.2 at idle. It doesn't really "flicker" it's a constant some-what fast brite-dim-brite-dim, and gets faster as rpms increase. It's been 2 weeks - daily driver, batt still fires strong in morn.
The strobe effect is drivin' me nuts.
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V8 Thumper
Gearhead Posts: 3529
From: Orange, Ca. United States of America
Registered: Dec 2001
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posted 10-09-2002 06:42 PM
quote:
Originally posted by ewokeric:
i think i would start checking for tight and good connections. Espacially grounds.
Amen. It may not solve the problem 100%, but it's quick, easy, and free
A tired regulator can make stuff act funny also.
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mustangzrule
Journeyman Posts: 87
From: Orion, MI
Registered: Sep 2002
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posted 10-10-2002 11:00 AM
I have been running for about 6 months now without the "S" post on my alternator connected and have the same strobe thing. The "S" is for stator, but I am not sure what the heck it's for.I suspect a wire on the alt or the volt reg. Yousaid all connections tight including belt, right? Look for a broken wire, corroded connector and start with the "S" post and work back to the VR. If nothing visibly wrong, replace the VR, it probably only $15 for a new one.
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Pierre
Gearhead Posts: 366
From: France
Registered: Apr 2002
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posted 10-10-2002 12:04 PM
quote:
Originally posted by Mach'ed Again:
Batt is new 8 mos. Volt meter shows 14.2 at idle. It doesn't really "flicker" it's a constant some-what fast brite-dim-brite-dim, and gets faster as rpms increase. It's been 2 weeks - daily driver, batt still fires strong in morn.
The strobe effect is drivin' me nuts.
If your problem is very regular in its blinking cycle, I would look at the blinker relay (the thing that makes blinkers flash)also.
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mustang68mustangs
Gearhead Posts: 289
From: pittsburgh,pa.usa
Registered: Jul 2001
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posted 10-10-2002 06:14 PM
Could be the Headlight switch going bad.
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RonnieT
Gearhead Posts: 637
From: Port Allen, La. 70767
Registered: Jun 99
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posted 10-10-2002 10:01 PM
This is a common problem in the older cars. It is caused by the older points type voltage regulator cycling to keep the battery charged. You can fix the problem by replacing the voltage regulator with a newer electronic regulator. You can even get these now that look exactly like the original stye regulator.------------------
Ronnie
69 mach1 351W-4V engineless at the time!
70 Torino GT 351C-4v with a "shaker"
Mustangs and More Member #23
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Mach'ed Again
Journeyman Posts: 47
From: Kinsley, Kansas, USA
Registered: Dec 2001
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posted 10-11-2002 06:55 AM
Thanks guys for all the helpfull input. It's time to get a little dirty------------------
'69 Mach I 351W FMX
'67 Cpe 302
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SteveLaRiviere
Administrator Posts: 33988
From: Saco, Maine
Registered: May 99
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posted 10-11-2002 09:43 PM
Change the voltage regulator to the solid state type. The old points type regulators were famous for this.------------------
'70 Mustang Mach 1 - '72 Mustang Sprint - '94 F-150
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DidgeyTrucker
Gearhead Posts: 1060
From: Greenbrier, TN USA
Registered: Oct 99
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posted 10-13-2002 03:25 PM
I agree with the points type regulator comments. I have a '66 F-100 experienced the flickering after putting in a "correct" points type regulator. The tall cases are points type. The solid state types are only about one inch tall if the guy behind the counter has no clue if he's selling you a solid state or points type regulator.Tracy
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