OD queston - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BluTrukker · 04-13-2009, 12:10 PM

I have a 3OTT w/OD in my 68. All the wiring seems to be correct, but I can't seem to get it working. I am about tired of messing with those stupid switches and governer. I heard someone say a while ago that you can just run a 12V wire to the big solenoid on the side and hook it to a switch. Switch on overdrive egages, switch off overdrive disengages. Has anyone done this? Is it really that simple? I don't really want to just try it, because if I burn that solenoid they are impossible to find. I don't really care if the kickdown switches work or not, I don't do a lot of passing on the highway.

nicks05z71 · 04-13-2009, 04:24 PM

I had the same problem when I was trying to get mine working. I did try and just run 12v power Via the stock wiring and did get it to work once for about 15 sec. then I blew the fuse. The problem was a Relay thats on the driver side fender. The stock relay is right below the hood and the fender gap, when the truck was outside and it rained water sat on the relay and got passed the seal, rusting eveything inside. There was no PN on the relay, whet to chevy dealership to ask if they had a parts manual, they dident think the OD came stock and couldnt tell me anything. Finaly I went to a local parts house with the old relay, looked in all the books they order out of and found one that looked close. The nexed day I had the relay mounted in the original position and just pluged it in. Thats it! Havent had any problems with it since.

Pics!

This is upsidedown just to give you the idea of the rust that was in it.

This is the new relay in the original position.

Botietruck · 04-13-2009, 05:25 PM

Nick, is there ANY way that you could come up with the part number of that relay you purchased?

nicks05z71 · 04-13-2009, 05:31 PM

Sure could! still have the box. Give Me five.

nicks05z71 · 04-13-2009, 05:53 PM

Standard brand - HR117

When I was looking in the book for this I wanted somthing that looked close to original. Cost me $18. Probaly can get somthing that works cheaper. Now the black peice to the left, this came off the original. The prongs on the new relay were closer. Thats the bad thing about ordering out of a book verses looking at what your buying. Lucky me I found a relay I had that looked nothing like both of these, but it had the right black peice. Just a little screw driver or a pick to get the wires out of the original, and they snaped in the new one.

Botietruck · 04-13-2009, 08:01 PM

Nick, thanks a million!! That is what I've been looking for.

Quote:

Originally Posted by nicks05z71

Standard brand - HR117

When I was looking in the book for this I wanted somthing that looked close to original. Cost me $18. Probaly can get somthing that works cheaper. Now the black peice to the left, this came off the original. The prongs on the new relay were closer. Thats the bad thing about ordering out of a book verses looking at what your buying. Lucky me I found a relay I had that looked nothing like both of these, but it had the right black peice. Just a little screw driver or a pick to get the wires out of the original, and they snaped in the new one.

Botietruck · 04-13-2009, 08:05 PM

If you google Borg-Warner overdrive, there are many articles on doing just what you're talking about. I've seen the very write-up, but can't recall where. Let me know if you do not find it. I'll give it another try.

Good luck!

Quote:

Originally Posted by BluTrukker

I have a 3OTT w/OD in my 68. All the wiring seems to be correct, but I can't seem to get it working. I am about tired of messing with those stupid switches and governer. I heard someone say a while ago that you can just run a 12V wire to the big solenoid on the side and hook it to a switch. Switch on overdrive egages, switch off overdrive disengages. Has anyone done this? Is it really that simple? I don't really want to just try it, because if I burn that solenoid they are impossible to find. I don't really care if the kickdown switches work or not, I don't do a lot of passing on the highway.

BluTrukker · 04-14-2009, 06:44 AM

Thanks a bunch, I will have to try that. It will be a couple weeks before I get some free time to tear into the 68 again. I'll let you know what I come up with.

04-13-2009, 12:10 PM	#1
BluTrukker BOHICA Join Date: Mar 2008 Location: Stewartville, MN Posts: 440	OD queston I have a 3OTT w/OD in my 68. All the wiring seems to be correct, but I can't seem to get it working. I am about tired of messing with those stupid switches and governer. I heard someone say a while ago that you can just run a 12V wire to the big solenoid on the side and hook it to a switch. Switch on overdrive egages, switch off overdrive disengages. Has anyone done this? Is it really that simple? I don't really want to just try it, because if I burn that solenoid they are impossible to find. I don't really care if the kickdown switches work or not, I don't do a lot of passing on the highway. __________________ Trying to save someone from their own stupidity is like teaching a pig to dance. It is a waste of your time, and it annoys the pig!

04-13-2009, 04:24 PM	#2
nicks05z71 Registered User Join Date: Sep 2008 Location: Willard,Ohio Posts: 87	Re: OD queston I had the same problem when I was trying to get mine working. I did try and just run 12v power Via the stock wiring and did get it to work once for about 15 sec. then I blew the fuse. The problem was a Relay thats on the driver side fender. The stock relay is right below the hood and the fender gap, when the truck was outside and it rained water sat on the relay and got passed the seal, rusting eveything inside. There was no PN on the relay, whet to chevy dealership to ask if they had a parts manual, they dident think the OD came stock and couldnt tell me anything. Finaly I went to a local parts house with the old relay, looked in all the books they order out of and found one that looked close. The nexed day I had the relay mounted in the original position and just pluged it in. Thats it! Havent had any problems with it since. Pics! This is upsidedown just to give you the idea of the rust that was in it. This is the new relay in the original position.

04-13-2009, 05:25 PM	#3
Botietruck '71 chevy s.bed/s.side Join Date: Mar 2005 Location: Chesapeake, VA Posts: 1,571	Re: OD queston Nick, is there ANY way that you could come up with the part number of that relay you purchased? __________________ STILL PLAYS WITH CARS...AND TRUCKS!! Parents! Be good to your kids...they get to choose your nursing home! 250 I-6 with a 3 speed Saginaw and Borg Warner Overdrive...She's got overdrive!

04-13-2009, 05:31 PM	#4
nicks05z71 Registered User Join Date: Sep 2008 Location: Willard,Ohio Posts: 87	Re: OD queston Sure could! still have the box. Give Me five.

04-13-2009, 05:53 PM	#5
nicks05z71 Registered User Join Date: Sep 2008 Location: Willard,Ohio Posts: 87	Re: OD queston Standard brand - HR117 When I was looking in the book for this I wanted somthing that looked close to original. Cost me $18. Probaly can get somthing that works cheaper. Now the black peice to the left, this came off the original. The prongs on the new relay were closer. Thats the bad thing about ordering out of a book verses looking at what your buying. Lucky me I found a relay I had that looked nothing like both of these, but it had the right black peice. Just a little screw driver or a pick to get the wires out of the original, and they snaped in the new one.

04-14-2009, 06:44 AM	#8
BluTrukker BOHICA Join Date: Mar 2008 Location: Stewartville, MN Posts: 440	Re: OD queston Thanks a bunch, I will have to try that. It will be a couple weeks before I get some free time to tear into the 68 again. I'll let you know what I come up with. __________________ Trying to save someone from their own stupidity is like teaching a pig to dance. It is a waste of your time, and it annoys the pig!



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