Sponsored Content
Hi all,
So the overdrive on my '87 vette has stopped working, the light in the dash won't come on and nothing happens when I push the overdrive button.
I've got the service manuals but, they don't have any info on troubleshooting the overdrive relay or the wires that go into the overdrive relay. I've replaced the relay but the problem persists. Does anyone know if the wiring going into the relay can be checked with a test light or a voltmeter? Strange that the service manual has detailed info on checking the cooling fan relay but zip on the overdrive relay.
I'd rather troubleshoot that area then check out all of the switched on the transmission. Has anyone seen a troubleshooting tree on the overdrive relay?
Be the first to like this post
Sign In to Like this post
Sign In to Like this post
SPONSOR AD:: (Our Sponsors help support Vette Registry)
Lifetime Member
Moderator
Send PMModerator
Duncanville, TX - USA
Joined: 11/8/2003
Posts: 22714
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
Joel Adams
C3VR Lifetime Member #56 
My Link 
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
Be the first to like this post
Sign In to Like this post
Sign In to Like this post
Thanks but I've got the service manual.
Cbarison
Be the first to like this post
Sign In to Like this post
Sign In to Like this post
m
Hi Joel,
The first page of the troubleshooting schematic opens and looks great! I cannot get the second page to open. I have an 84. I figure it is similar.
Thanks for posting this,
Mike
Be the first to like this post
Sign In to Like this post
Sign In to Like this post
Lifetime Member
Moderator
Send PMModerator
Duncanville, TX - USA
Joined: 11/8/2003
Posts: 22714
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
Ooopsie!! Page has been fixed, and wiring diagram added.
Joel Adams
C3VR Lifetime Member #56
My Link
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
Be the first to like this post
Sign In to Like this post
Sign In to Like this post
in Forum: C4 Engines, Driveline and Handling
Sponsored Content