Home page
  Home Page   Contact Us   Our History   Advertise with Us   Sponsor List   Link to Us   Compare Levels   Member Agreement   Privacy Policy   About C3VR
  Community Forums   Active Threads   Forum Search   Top Posters List   Private Messenger   C3VR Email System   C3 Corvette Quiz
  Members Vettes & Pictures   Member Stories   Member Stats   Real Time Member Map   Member Search   Lifetime Member List   Member Calendar Entry Form   Who's Online
  C3 Registry Data   C3 Corvette Statistics   C3 Corvette Tips & Tricks   C3 Corvette How-Tos   Corvette Club Listing   Corvette Event Listing   Mechanic Directory   Corvette VIN Decoder   Save the Wave   Corvette Emblem History   C3 Corvette Birthday Calculator   C3 Corvette Build Dates   Corvette Parts Illustration Catalog   Shark Bytes - Online
  C3 Corvette Parts Auctions on eBay   Corvette Books   C3VR In-Stock Apparel & Accessories   C3VR Member Name Badges   C3VR Custom Apparel & Accessories @ Zazzle   C3VR Window Stickers   C3VR Member Deals & Discounts   C3VR Member Calendars   Shop Amazon.com
☰
SPONSOR AD

Topic: tac jump

in Forum: C3 Electrical

Already a Member? Click Here to Login

tac jump

Posted: 9/21/10 9:24am Message 1 of 5
jose's 79
Former Member
Send PM
bethpage, NY - USA
Joined: 7/19/2010
Posts: 34
Vette(s): stock original 1979 L82.
installed a new tac circuit board a few months ago. yesterday the tac started jumping up and down and then frozen, but went back to zero when i shut the car off. whats happening, and ho do i correct it?


SPONSOR AD:: (Our Sponsors help support C3VR)

tac jump

Posted: 9/21/10 10:55am Message 2 of 5
Profile Pic
yostusota
Former Member
Send PM
York, PA - USA
Joined: 5/18/2010
Posts: 1518
Vette(s): 1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top
There is a reset that you have to do after you replace the board..lukesvette has the skinny on that..
Rich



My first parade at Carlisle 2010

tac jump

Posted: 9/21/10 11:54am Message 3 of 5
Profile Pic
lukesvette
Lifetime MemberLifetime Member
Send PM
HOWELL, NJ - USA
Joined: 5/18/2004
Posts: 6812
Vette(s): 1979, Targa Blue (72 Color), Pace Car rear spoiler, L88 hood, Dark blue factory interior, 525HP 406, HD 700R4, 370 gears,Steeroids, composite rear spring, TT IIs wrapped in T/A Radials.
Re-zeroing the tach will not cure a bouncing issue - just aligns the start point to 0 RPM with the ignition in the run position and the engine off.... Sounds like either the tach filter or the new tach board has an issue...


LukesVette Homepage
Veteran of Operation Iraqi Freedom
101st Airborne(AirAssault!)
God Bless America
Support Our Troops


     

tac jump

Posted: 9/21/10 1:39pm Message 4 of 5
manchestershark
Lifetime MemberLifetime Member
Send PM
Equinunk, PA - USA
Joined: 10/31/2007
Posts: 2465
Vette(s): 1972 conv, 4-speed, 350, 200hp, numbers match, rally wheels, war bonnett yellow w/white top. good condition, nice driver.
Check for bad ground.



Click on image for full view

tac jump

Posted: 9/22/10 11:05am Message 5 of 5
jose's 79
Former Member
Send PM
bethpage, NY - USA
Joined: 7/19/2010
Posts: 34
Vette(s): stock original 1979 L82.
where is the ground? off the distributor?


in Forum: C3 Electrical


SPONSOR AD: (Our Sponsors help support C3VR)