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03-06-2012, 03:02 PM
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#1 |
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Registered User
Join Date: Apr 2010
Location: brockport, ny
Posts: 7
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1986 silverado dual fuel tank system
so i am going to replace both my tanks and sending units and the fuel tank selector valve "which i have no choice but to use a universal one" i cant find a true aftermarket replacement. i am being told that i have to install a after market switch does anyone know if i can just use the factory installed switch?
and i am having trouble with my fuel gauge its all over the place either on empty or pegged past full. if you tap on the gauge bezzel the gauge will i assume read the actual fuel level. i have tried to taking the cluster out of the dash and cleaning and tighting the connections but there is no change. any ideas thank for all your help!!!! |
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03-06-2012, 05:16 PM
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#2 |
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Registered User
Join Date: Feb 2012
Location: Austin, Arkansas
Posts: 248
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Re: 1986 silverado dual fuel tank system
AutoZone lists 2 types of replacement valves.one($49.99),you have to use a different switch,and the more expensive($89.99),has an adapter,to accept the stock wiring.GM no longer offers a replacement.
As for your gauges,it,s probably the same thing mine did,and I ended up putting in an extra ground, on EACH gauge,and running them to a single ground wire,and to a good ground on the body. Those little "pinch-type" connectors,that the gauge pins slide into, lose their tension,and a simple bump can break the ground contact,causing you to "tap" the bezel,to get it working.
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Always expect the unexpected,....but don't expect the unexpected to be the unexpected you expect ! I'm busier than a one-legged cat,in a sandbox! Veteran..and proud ! I can't fix what ain't broke....you want I should break it? |
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03-06-2012, 09:00 PM
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#3 |
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Square
Join Date: Feb 2011
Location: Phoenix Arizona
Posts: 1,568
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Re: 1986 silverado dual fuel tank system
check your grounds at the sending units. also, I got a switch from napa that looked identical to the factory switch.
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Squarebody Syndicate |
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03-07-2012, 12:21 AM
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#4 |
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Registered User
Join Date: Jan 2008
Location: Chula Vista, Ca
Posts: 518
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Re: 1986 silverado dual fuel tank system
Yes, check the grounds i had the same issue on one side and it was a bad ground... as for the switch i bought mine at autozone for $15
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03-07-2012, 02:59 AM
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#5 |
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Registered User
 
Join Date: Apr 2009
Location: New Freedom Pa.
Posts: 1,335
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Re: 1986 silverado dual fuel tank system
The "Factory" fuel switching valve is available
"Pollack" http://www.jcwhitney.com/motor-drive.../p2005712.jcwx  Desert Last edited by Desert1957; 03-07-2012 at 03:09 AM. |
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03-07-2012, 03:12 AM
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#6 |
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Registered User
Join Date: Oct 2011
Location: Plumas Lake, CA
Posts: 386
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Re: 1986 silverado dual fuel tank system
LMC has one that was EXACTLY the replacement for what I had. Check their versions.
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03-07-2012, 11:16 AM
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#7 |
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Registered User
Join Date: Jul 2010
Location: Lafayette, IN
Posts: 621
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Re: 1986 silverado dual fuel tank system
I got both the fuel switch and selector valve at my local Napa. I probably paid more than I should have, but they had them in stock.
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03-07-2012, 11:55 AM
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#8 | |
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Registered User
Join Date: Apr 2009
Location: New Freedom Pa.
Posts: 1,335
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Re: 1986 silverado dual fuel tank system
Quote:
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03-07-2012, 01:44 PM
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#9 |
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Registered User
Join Date: Feb 2012
Location: grass valley,ca
Posts: 5
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Re: 1986 silverado dual fuel tank system
wells part #
selector valve FSV1 switch SW411 available at both autozone and my local napa |
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