On my '80 the wipers work in the normal run position and wash. However, in intermittent they will work only with the timing set to fastest speed, i.e. turned all the way clockwise. And in max speed they either won't work of execute one cycle before stopping. The switch, motor, mechanism, etc. are all original. Any idea what the fault could be?
And as long as I'm here, any guidance on how to get the old blades off would be appreciated. I only ever used the inserts since I bought the car back in '80. But I'm looking to replace the whole blade at this point.
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
Sounds like the wiper problem could be with the delay module. Others here are more in tune with the later cars with all the "fancy" options than I am, but I know there have been MANY issues with the wipers that were resolved by either replacing, or modifying the delay module. I do not have an '80 model service manual here, but I'll look and see if I can find something to help, if someone else doesn't chime in.
____________________________________ Joel Adams C3VR Lifetime Member #56 My Link
Adam, thanks for the reply. I'll appreciate anything you might suggest. I dug a little deeper myself and in addition to the the relay I think the most likely other possibility is the switch itself. Apparently grease in the switch can degrade over time becoming hard and creating an insulating coating on the contacts. No rush on this. The car leaks in the rain, so I don't plan to drive it when it's wet.
On the topic of driving it, as of yesterday there is an fresh inspection sticker on the car, the first one since 2003. Since the wipers functioned at the primary level, standard wipe, they passed. The only ding was for an exhaust leak between the manifold and down pipe. A little heat on the nuts to break them loose and a little tightening fixed that.
Pretty amazing that a 37 year old care with all the original suspension (other than shocks), steering linkages, exhaust (except for mufflers), etc. could do so well. As the mechanic said, "this car's as old as me".
Now the next issue is all kinds of rattling in the back when driving. I'll put a different post for that.
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