Mine quit working today. And from what I understand. They're obsolete. Any sparky out there have an idea on how to make one. Bob Dunahugh 78 Royale
Dash heat, A/C blower motor delay.
- Thread starter Bob Dunahugh
- Start date
If I recall correctly, you can bypass it by moving the purple wire to the other harness. Others can probably jump in with the exact procedure.
If you want to replace it, I picked up an NOS one on eBay for like $10 a couple of months ago.
>
> Mine quit working today. And from what I understand. They're obsolete. Any sparky out there have an idea on how to make one. Bob Dunahugh 78 Royale
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If you want to replace it, I picked up an NOS one on eBay for like $10 a couple of months ago.
>
> Mine quit working today. And from what I understand. They're obsolete. Any sparky out there have an idea on how to make one. Bob Dunahugh 78 Royale
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I think these are it: search “366408 relay” on eBay.
>
> If I recall correctly, you can bypass it by moving the purple wire to the other harness. Others can probably jump in with the exact procedure.
>
> If you want to replace it, I picked up an NOS one on eBay for like $10 a couple of months ago.
>
>>
>> Mine quit working today. And from what I understand. They're obsolete. Any sparky out there have an idea on how to make one. Bob Dunahugh 78 Royale
>> _______________________________________________
>> GMCnet mailing list
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>
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>
> If I recall correctly, you can bypass it by moving the purple wire to the other harness. Others can probably jump in with the exact procedure.
>
> If you want to replace it, I picked up an NOS one on eBay for like $10 a couple of months ago.
>
>>
>> Mine quit working today. And from what I understand. They're obsolete. Any sparky out there have an idea on how to make one. Bob Dunahugh 78 Royale
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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Bob, the engine needs to be running and the alternator needs to be putting
out before the high speed will work. Just a suggestion. It still may be a
bad relay.
Jim Hupy
On Tue, May 29, 2018, 4:54 PM Dave Stragand
wrote:
> If I recall correctly, you can bypass it by moving the purple wire to the
> other harness. Others can probably jump in with the exact procedure.
>
> If you want to replace it, I picked up an NOS one on eBay for like $10 a
> couple of months ago.
>
> >
> > Mine quit working today. And from what I understand. They're obsolete.
> Any sparky out there have an idea on how to make one. Bob Dunahugh 78
> Royale
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
> _______________________________________________
> GMCnet mailing list
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>
out before the high speed will work. Just a suggestion. It still may be a
bad relay.
Jim Hupy
On Tue, May 29, 2018, 4:54 PM Dave Stragand
wrote:
> If I recall correctly, you can bypass it by moving the purple wire to the
> other harness. Others can probably jump in with the exact procedure.
>
> If you want to replace it, I picked up an NOS one on eBay for like $10 a
> couple of months ago.
>
> >
> > Mine quit working today. And from what I understand. They're obsolete.
> Any sparky out there have an idea on how to make one. Bob Dunahugh 78
> Royale
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
There seems to be some miss understanding. The blower ( RELAY ) is new, and working properly. It's the blower motor ( DELAY ) that's not working. The DELAY is located just above the RELAY. The DELAY is so there are two vacuum controlled doors. Have time to get into their proper position before the blower motor turns on in the high position. As the vacuum controlled diaphrams can be overpowered by the blower. In 1977. GM made great improvements for the 77-78 modals in this area. James H mentioned that the engine needs to be running for the blower to run on high. This is important to remember. So. I had bypassed the delay. Everything then worked fine. And I understand that the DELAY is obsolete. Would it be hard to make a replacement ? The cooling part works great. When I built this 78. I put in a Sanden compressor, and hoses on that I got from Jim K at Applied. Very nice kit. Bob Dunahugh 78 Royale
________________________________
From: Bob Dunahugh
Sent: Tuesday, May 29, 2018 6:46 PM
To: gmclist
Subject: Dash heat, A/C blower motor delay.
Mine quit working today. And from what I understand. They're obsolete. Any sparky out there have an idea on how to make one. Bob Dunahugh 78 Royale
________________________________
From: Bob Dunahugh
Sent: Tuesday, May 29, 2018 6:46 PM
To: gmclist
Subject: Dash heat, A/C blower motor delay.
Mine quit working today. And from what I understand. They're obsolete. Any sparky out there have an idea on how to make one. Bob Dunahugh 78 Royale
Bob,
There are lots of little circuit boards that will provide a "Power ON" delay. Google "Power on delay relay" You just need to wire it to control the
existing relay. Some might have an integral relay, but be sure the relay contacts are rated to handle the fan current.
Or alternatively, goto a local Electrician who does commercial/industrial wiring and ask him if he has one in their second hand box. These little
timers are used in industry every day and are made by numerous manufacturers such as Omron. You should be able to pick one up for a few bucks... or
even free!
--
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
There are lots of little circuit boards that will provide a "Power ON" delay. Google "Power on delay relay" You just need to wire it to control the
existing relay. Some might have an integral relay, but be sure the relay contacts are rated to handle the fan current.
Or alternatively, goto a local Electrician who does commercial/industrial wiring and ask him if he has one in their second hand box. These little
timers are used in industry every day and are made by numerous manufacturers such as Omron. You should be able to pick one up for a few bucks... or
even free!
--
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
Hi Bob,
Yes, I was referring to the delay relay, at the very top of the compartment. I can send you my original one if you’d like. There are also a few NOS 366408 delay relays on eBay at present — I’d be happy to pick one up for you to repay your generosity with the spare carrier!
-Dave Stragand
1978 Transmode, near Pittsburgh
>
> There seems to be some miss understanding. The blower ( RELAY ) is new, and working properly. It's the blower motor ( DELAY ) that's not working. The DELAY is located just above the RELAY. The DELAY is so there are two vacuum controlled doors. Have time to get into their proper position before the blower motor turns on in the high position. As the vacuum controlled diaphrams can be overpowered by the blower. In 1977. GM made great improvements for the 77-78 modals in this area. James H mentioned that the engine needs to be running for the blower to run on high. This is important to remember. So. I had bypassed the delay. Everything then worked fine. And I understand that the DELAY is obsolete. Would it be hard to make a replacement ? The cooling part works great. When I built this 78. I put in a Sanden compressor, and hoses on that I got from Jim K at Applied. Very nice kit. Bob Dunahugh 78 Royale
>
>
> ________________________________
> From: Bob Dunahugh
> Sent: Tuesday, May 29, 2018 6:46 PM
> To: gmclist
> Subject: Dash heat, A/C blower motor delay.
>
>
> Mine quit working today. And from what I understand. They're obsolete. Any sparky out there have an idea on how to make one. Bob Dunahugh 78 Royale
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
Yes, I was referring to the delay relay, at the very top of the compartment. I can send you my original one if you’d like. There are also a few NOS 366408 delay relays on eBay at present — I’d be happy to pick one up for you to repay your generosity with the spare carrier!
-Dave Stragand
1978 Transmode, near Pittsburgh
>
> There seems to be some miss understanding. The blower ( RELAY ) is new, and working properly. It's the blower motor ( DELAY ) that's not working. The DELAY is located just above the RELAY. The DELAY is so there are two vacuum controlled doors. Have time to get into their proper position before the blower motor turns on in the high position. As the vacuum controlled diaphrams can be overpowered by the blower. In 1977. GM made great improvements for the 77-78 modals in this area. James H mentioned that the engine needs to be running for the blower to run on high. This is important to remember. So. I had bypassed the delay. Everything then worked fine. And I understand that the DELAY is obsolete. Would it be hard to make a replacement ? The cooling part works great. When I built this 78. I put in a Sanden compressor, and hoses on that I got from Jim K at Applied. Very nice kit. Bob Dunahugh 78 Royale
>
>
> ________________________________
> From: Bob Dunahugh
> Sent: Tuesday, May 29, 2018 6:46 PM
> To: gmclist
> Subject: Dash heat, A/C blower motor delay.
>
>
> Mine quit working today. And from what I understand. They're obsolete. Any sparky out there have an idea on how to make one. Bob Dunahugh 78 Royale
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
The delay was added as a patch in fix, so the connectors plug right together to patch around it. No cutting no cuzzing. 30 second fix. I don't use HI
when changing damper modes and never had an issue. Actually on the road I usually use speed 2-3 for noise reasons. Once at highway speeds the ram
effect makes 3 flow like 4 if you keep it on fresh air Normal.
--
John Lebetski
Woodstock, IL
77 Eleganza II
when changing damper modes and never had an issue. Actually on the road I usually use speed 2-3 for noise reasons. Once at highway speeds the ram
effect makes 3 flow like 4 if you keep it on fresh air Normal.
--
John Lebetski
Woodstock, IL
77 Eleganza II
