Over Drive

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Apr 1, 2005 | 12:32 PM

jeremy carl

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Joined: Mar 2005

Posts: 51

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From: Las Vegas Nv

Over Drive

got an 86. just brought it and the OD doesnt work on the 4+3. I know this is a common problem, is there a common fix?
Thanks
JT

Apr 1, 2005 | 12:47 PM

rocco16

Race Director

Joined: Dec 2002

Posts: 13,348

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From: SCMR Rat Pack'r Charter Member..Great Bend KS

Yes, just beware of equating 'common' with 'cheap'.

Larry
code5coupe

Apr 1, 2005 | 06:43 PM

AGENT 86

Team Owner

Joined: Jan 2003

Posts: 20,324

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From: Summerland B.C. Canada

Check the relay on the firewall by the brake booster (possible short due to shrinking of the wire insulation). Also check the "T" bolt under the OD switch. It could be out of adjustment or even missing.
Just a couple of thoughts

Apr 1, 2005 | 11:12 PM

mikenfl

Racer

Joined: Jan 2004

Posts: 380

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From: New Hampshire There's nothing like a 'Vette

Also, check and make sure the wire hasn't fallen off the od unit. It plugs in on the drivers side just above the pan rail.

Apr 2, 2005 | 07:23 AM

88espo

Instructor

Joined: Jun 2004

Posts: 177

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From: Little Ferry NJ

change all the relays you see on fender well and by battery. I think there are three. 12.00 each. maf and o/d.

Apr 2, 2005 | 09:12 AM

scorp508

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Joined: Mar 2000

Posts: 83,383

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From: Boston, MA

There are lots of possibilities for this happening. Is the little [D] light coming on in the dashboard at all?

Apr 2, 2005 | 10:43 AM

Hotred94

Pro

Joined: Jan 2004

Posts: 707

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From: Syracuse Utah

I had the same problem with my 87. I just cleaned all the electrical contacts and it worked perfect.

Apr 2, 2005 | 07:45 PM

jeremy carl

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Joined: Mar 2005

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From: Las Vegas Nv

OD again

Quote:

Originally Posted by scorp508

There are lots of possibilities for this happening. Is the little [D] light coming on in the dashboard at all?

Yea the over drive light comes on when you press the button, an goes off at different times.
Thanks

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Apr 2, 2005 | 10:09 PM

86z51-4+3

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Joined: Apr 2005

Posts: 81

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From: Ghent ny

hey, ive got an 86 with a similer problem,the light comes on once in awhile,never when i presss the button,i read the 101 projects book and climbed under to find i dont have all those wires on my tranny,only backup light wires to tranny,no second gear switch.is there another way to hard wire the button to work when activated,please help

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