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12-04-2006, 07:09 PM
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#1 |
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The Hammer Man
 
Join Date: Oct 2006
Location: Wilmington, NC
Posts: 864
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Dim @ Idle ?
Why does my dash lights run dim at idle but bright when i accelerate? Alternator? If so, what amp alt should i be running? something besides my alternator?
TIA
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Boise69. Bought in Boise ID and its a '69 ___________________________________________ 1969 Chevy C-10 SWB 350/400 - drivable project www.americanhammer.com 2013 MBZ Sprinter customized 2005 MBZ Sprinter Van 2004 Land Rover Discovery 2001 Yamaha Road Star 1997 MBZ E420 1989 Ferrari Mondial T |
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12-04-2006, 07:11 PM
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#2 |
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Registered User
Join Date: Oct 2006
Location: Cheney, KS
Posts: 669
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Re: Dim @ Idle ?
Because like every other vehicle.....the alternator isnt accually charging till about 1500 RPM or so.
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12-04-2006, 07:15 PM
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#3 |
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The Hammer Man
Join Date: Oct 2006
Location: Wilmington, NC
Posts: 864
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Re: Dim @ Idle ?
Yea but my newer vehicles dont go dim at idle
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Boise69. Bought in Boise ID and its a '69 ___________________________________________ 1969 Chevy C-10 SWB 350/400 - drivable project www.americanhammer.com 2013 MBZ Sprinter customized 2005 MBZ Sprinter Van 2004 Land Rover Discovery 2001 Yamaha Road Star 1997 MBZ E420 1989 Ferrari Mondial T |
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12-04-2006, 07:15 PM
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#4 |
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Senior Member
Join Date: Sep 2006
Location: Vancouver, WA
Posts: 1,015
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Re: Dim @ Idle ?
Yea, mine does the same thing? Could it be the voltage regulator?
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12-04-2006, 07:46 PM
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#5 |
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Senior Member
Join Date: Jul 2006
Location: Leander, Texas
Posts: 850
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Re: Dim @ Idle ?
Mine do the same thing. I always attributed it to just being an old vehicle and having a weaker alternator and no computer telling my truck what to do.
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12-04-2006, 08:03 PM
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#6 |
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Registered User
Join Date: Dec 2003
Location: Glendale Arizona
Posts: 747
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Re: Dim @ Idle ?
Mine do it as well and so do my headlights.
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"A true hotrodder wouldn't be content untill he had created a car so violent, so hairy, so totally sick that the very act of dropping the hammer would result in instant death. Anything less results in the need to go faster." - Tony DeFeo |
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12-04-2006, 08:07 PM
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#7 |
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I am a Referee of life.
Join Date: Jun 2000
Location: Greensboro N.C.
Posts: 13,993
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Re: Dim @ Idle ?
It's fairly common on older vehicles.The draw of the electrical system is usually enough to draw down the system at idle.Probably the headlights do the same thing.That is why there is a FAQ on upgrading the headlights using a relay.
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The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil" |
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12-04-2006, 09:17 PM
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#8 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Dim @ Idle ?
normal
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71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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12-04-2006, 10:07 PM
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#9 |
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Registered User
Join Date: Mar 2001
Location: RADFORD, VA
Posts: 2,651
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Re: Dim @ Idle ?
Mine used to TILL I upgraded to an internally regulated altenator,He,Ha,He,Ha,best thing I ever did,and electronic Ignition,HA,HA,Ha,just in a laughing mood tonight it's FULL.
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1964 BBC 402 4x4   |
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12-04-2006, 11:16 PM
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#10 | |
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The Hammer Man
Join Date: Oct 2006
Location: Wilmington, NC
Posts: 864
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Re: Dim @ Idle ?
Quote:
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Boise69. Bought in Boise ID and its a '69 ___________________________________________ 1969 Chevy C-10 SWB 350/400 - drivable project www.americanhammer.com 2013 MBZ Sprinter customized 2005 MBZ Sprinter Van 2004 Land Rover Discovery 2001 Yamaha Road Star 1997 MBZ E420 1989 Ferrari Mondial T |
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12-04-2006, 11:19 PM
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#11 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Dim @ Idle ?
Even after the upgrade, you'll still have it a little, but not as bad.
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12-05-2006, 01:24 AM
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#12 |
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Registered User
Join Date: Oct 2006
Location: Southern Kalifornia
Posts: 3,066
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Re: Dim @ Idle ?
If you're going to do the upgrade go straight to the CS130 alternator from a gm car or truck from the mid 90's.I did mine that way and dont have any dimming at all.The Cadillac and the buick park ave. have 140 amp alternators! There is a link but I cant think of it right now,It may be MAD electric or search the threads. You wont be sorry. Also what seems to complicated on electronic ignition? is it HEI?
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12-05-2006, 01:41 AM
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#13 | |
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The Hammer Man
Join Date: Oct 2006
Location: Wilmington, NC
Posts: 864
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Re: Dim @ Idle ?
Quote:
OH, i have an HEI, i'm just tired, sorry. thank you for the info on the alternator!
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Boise69. Bought in Boise ID and its a '69 ___________________________________________ 1969 Chevy C-10 SWB 350/400 - drivable project www.americanhammer.com 2013 MBZ Sprinter customized 2005 MBZ Sprinter Van 2004 Land Rover Discovery 2001 Yamaha Road Star 1997 MBZ E420 1989 Ferrari Mondial T |
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