Fuel gauge needle won't go below 1/2 tank. I have replaced sending unit, gauge and printed circuit. Inside of tank bladder appears to be in good shape. Am I overlooking something here? Any help would be appreciated.
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/
Am-Fm/map light National/Regional/Chapter NCRS "Top Flight"
#2-1985 Bright Red/Carmine Cp.L-98/auto
Member: NCRS, NCRS Texas, Corvette Legends of Texas
druzac said: ...Inside of tank bladder appears to be in good shape.
Looks can be deceiving....chances are the float is hanging on the bladder when it gets to 1/2 tank. Since you've already replaced the gauge, sender, and circuit board, I would expect the problem is none of those things. If you take the sender out of the tank, you should be able to move the float by hand, and watch the gauge to see if it responds accordingly. If it does, then the problem is the float hanging on the bladder. The pump will run for a few seconds when you do this, but it won't be a problem.
Someone here not too long ago had a similar problem, and they just bent the float arm enough to eliminate the hanging up problem.....might be something you may want to do, also.
____________________________________ Joel Adams C3VR Lifetime Member #56 My Link
Corvette is a registered trademark of the General Motors Corporation(GM) &
Chevrolet Motor Division. Vette Registries, LLC is responsible for all site content (except for member submitted content or where otherwise
noted) and does not claim or imply that Chevrolet or
GM is responsible for Official C3 Vette Registry content. Vette Registries, LLC is independent from GM and is not affiliated
with, sponsored or supported by GM. Copyright/trademark/sales mark
infringements are not intended, or implied and are in fact used to support
GM, Chevrolet and Corvette.
Official C3 Vette Registry content is Copyright 2001-2017, Vette Registries, LLC. Content may not be reused without written consent. All Rights Reserved. NS
Corvette (Vette) Model Years on this site: 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982