Gauges fuse...every 3 days

[shawn bennear]

My 77 Pam Beach has a interesting issue... The gauges fuse blows just about every 3 days. Anyone have any thoughts on where to begin, if anyone else
may have had this issue. Also, is the ac compressor on this circuit too? That is free on bth the pulley and the clutch, yet jumping the pressure
switch wont turn it on..

Shawn
--
http://www.gmcmotorhomeworld.com

 

[mghamms]

Readjust the fuse blow timer to however long you want it to go.
--
1977 Kingsley 455 as stock as it gets except lots of Ragusa parts

 

[johnny]

Does the fuse blow on overload or short? For overload, the fusible link will be melted, usually with a break at the melt point. For a short the
fusible link will vaporize and coat the fuse glass with black and metal tigbits.

--johnny
--
76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
"I forgive them all, save those who hurt the dogs. They must answer to me in hell" - ol Andy, paraphrased

 

[shawn bennear]

> Does the fuse blow on overload or short? For overload, the fusible link will be melted, usually with a break at the melt point. For a short the
> fusible link will vaporize and coat the fuse glass with black and metal tigbits.
>
> --johnny

It usually blows when I turn the key to start... and not all the time... usually every couple days. Change it, and it's fine again for a few more
days..

--
http://www.gmcmotorhomeworld.com

 

[johnny]

Cool. In what way does it blow? i.e. are we looking for a faulty gauge power thingie or a shorted wire. Knowing how the fuse blows might indicate a
direction to look.

--johnny

--
76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
"I forgive them all, save those who hurt the dogs. They must answer to me in hell" - ol Andy, paraphrased

 

[d c *mac* macdonald]

Are you sure you are using a fuse of the correct rating?

D C "Mac" Macdonald, K2GKK/5 in OKC, ⌨
________________________________
From: Gmclist on behalf of Johnny Bridges via Gmclist
Sent: Tuesday, September 25, 2018 15:00
To: gmclist
Cc: Johnny Bridges
Subject: Re: [GMCnet] Gauges fuse...every 3 days

Cool. In what way does it blow? i.e. are we looking for a faulty gauge power thingie or a shorted wire. Knowing how the fuse blows might indicate a
direction to look.

--johnny

--
76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
"I forgive them all, save those who hurt the dogs. They must answer to me in hell" - ol Andy, paraphrased

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[RF_Burns]

Looking at the wiring diagram for the 77/78 chassis, it shows the 10Amp Gauges fuse also operates the transmission kick-down relay.

Check the kick-down switch which is above the accelerator. Maybe the connector is randomly shorting to ground. In any case, pull the connector off the
kick-down switch and tie it where it wont short on anything. Best practices is to pull the transmission down a gear rather than using the electric
kick-down relay in the transmission.

--
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

 

[charles boyd]

Or maybe the wire going down beside the transmission on the pass side got into the exhaust manifold or something?

> Looking at the wiring diagram for the 77/78 chassis, it shows the 10Amp Gauges fuse also operates the transmission kick-down relay.
>
> Check the kick-down switch which is above the accelerator. Maybe the connector is randomly shorting to ground. In any case, pull the connector off
> the kick-down switch and tie it where it wont short on anything. Best practices is to pull the transmission down a gear rather than using the
> electric kick-down relay in the transmission.

--
C. Boyd
76 Crestmont
East Tennessee

 

[Ken B]

> Readjust the fuse blow timer to however long you want it to go.

I was thinking about telling him to get some 30 day fuses.

--
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana