Jump to content

Welcome Guest

Navigation

Sponsor

Welcome to Classic Zcar Club
Register now to gain access to all of our features. Once registered and logged in, you will be able to create topics, post replies to existing threads, give reputation to your fellow members, get your own private messenger, post status updates, manage your profile and so much more. This message will be removed once you have signed in.
Login to Account Create an Account

Photo

280z Over Charging


  • Please log in to reply
8 replies to this topic

#1
bryand2

bryand2

    Registered User

  • Members
  • PipPipPip
    • Member ID: 19,171
  • 45 posts
  • LocationSF bay area
  • Member:CZC$post[userid]
Hey guys, I posted a while back about the alternator upgrade that the PO had done and based on blue's tech tips, the wiring for the externally regulated alternator was wrong but the car was running fine. Based on blues diagrams, the PO had jumpered wires 5 and 6 from the alt. harness together where blue said numbers 5 and 1. So i reverted back to the way it was originally and now I am overcharging, showing about 14.9-15.1 volts, is running that much voltage going to cause damage? I know the stock voltage is supposed to be 13.8-14.4

#2
SteveJ

SteveJ

    Time to refocus on my Zs

  • Members
  • PipPipPipPipPip
    • Member ID: 4,648
  • 4,105 posts
  • LocationGainesville, GA
Do me a favor. Post the wire colors that you jumpered together. That way I can look at the wiring diagrams and figure out if you did it right.

73 240Z
74 260Z

Blue's collection of tech tips - A great place to look for answers
XenonZCar -The cheap source for FSMs
Georgia Z Club
Fiddling with Z Cars - Z car tips & tricks and pictures of my car-loving life.
Steve's CARtography - Just car pictures.


#3
Diseazd

Diseazd

    Supporting Member

  • Members
  • PipPipPipPipPip
    • Member ID: 13,264
  • 2,077 posts
  • LocationRichmond
Steve's the "go to" person for electrical issues......Vanderbilt E.E. ......give him your info and he'll make it right! He's saved my azz a number of times! :ogre:

Edited by Diseazd, 24 March 2013 - 05:45 AM.

70, 71, 2 72's, and a 73 240z....90 300zx and a 1996 Acura NSX.....but who's counting?

#4
beermanpete

beermanpete

    Registered User

  • Members
  • PipPipPipPipPip
    • Member ID: 20,451
  • 681 posts
  • LocationNorthridge, California, U.S.A.
  • Member:CZC$post[userid]
14.9 to 15.1 is within the factory specifications for the externally regulated system.

#5
Willoughby Z

Willoughby Z

    Registered User

  • Members
  • PipPipPipPipPip
    • Member ID: 22,391
  • 400 posts
  • LocationNorfolk VA
  • Member:CZC$post[userid]

14.9 to 15.1 is within the factory specifications for the externally regulated system.


Exactly where my '77 operates, with new stock-spec alternator and external VR. If my running voltage, measured at the battery posts with a multimeter was anything less than 14vdc, I'd be worried.

HLS30 371-239 (1/77)
Every time he touched her, she told him that places where she wanted to be more beautiful!
Mr.Tamura said it is like an old craftsman of Buddha statue,he did not creat it, Buddha itself...
Kats

FSM: http://www.xenons30.com/reference.html
EFI "bible" : http://www.4moores.c...jectionbook.pdf

#6
bryand2

bryand2

    Registered User

  • Members
  • PipPipPip
    • Member ID: 19,171
  • 45 posts
  • LocationSF bay area
  • Member:CZC$post[userid]
Hey Steve, the PO had wires # 5 and 6 jumpered together, which are a blue one and a back with white one. About 3 months ago i realized they had it wrong, it was supposed to be 1 and 5, and 2 and 3 and I corrected it. Once I did this the system was operating as it should including the alternator charge light test and brake lamp warning test. However it was after this that my hot start problem began so I reverted back to the #'s 5 and 6 wires jumpered together and the car runs fine. And btw 5 and 6 are jumpered together with a diode in between. Steve could possible explain how the car is running fine with just 5 and 6 connected. 5 is white with black stripe and 6 is blue http://atlanticz.ca/...swap/index.html

#7
bryand2

bryand2

    Registered User

  • Members
  • PipPipPip
    • Member ID: 19,171
  • 45 posts
  • LocationSF bay area
  • Member:CZC$post[userid]
correction, in first sentence meant white with a black stripe

#8
bryand2

bryand2

    Registered User

  • Members
  • PipPipPip
    • Member ID: 19,171
  • 45 posts
  • LocationSF bay area
  • Member:CZC$post[userid]
Notice that my thumb is above wire # 1, sorry the pics are small

alt3.jpg

Attached Thumbnails

  • alt.jpg


#9
SteveJ

SteveJ

    Time to refocus on my Zs

  • Members
  • PipPipPipPipPip
    • Member ID: 4,648
  • 4,105 posts
  • LocationGainesville, GA
Please give all of the wire colors. I don't care about pin numbers. I cannot trace a pin number to a wire easily.

73 240Z
74 260Z

Blue's collection of tech tips - A great place to look for answers
XenonZCar -The cheap source for FSMs
Georgia Z Club
Fiddling with Z Cars - Z car tips & tricks and pictures of my car-loving life.
Steve's CARtography - Just car pictures.





0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users