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#1 |
Registered User
![]() Join Date: Dec 2010
Location: Grantsville, Ut
Posts: 164
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2 fuel tanks, 1 problem
I have a 1990 R3500 with dual tanks. I alternate fuel tanks to keep the fuel fresh. I just switched to my right tank and used it for about 50 miles when it started dying on me, especially at idle. When I switch back to the left tank it runs fine. Do these trucks share a fuel pump and filter or do they each have their own? I thought bad gas but it ran fine for the first 1/4 tank. I'm just looking for some suggestions on possible causes.
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#2 |
Registered User
Join Date: Jun 2010
Location: Centerville, MN
Posts: 81
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Re: 2 fuel tanks, 1 problem
that truck should have a TBI injection system on it and so it would have a fuel pump in each tank. I would guess that you have a bad pump or maybe something simple like a split fuel line in the tank. I'm not sure if they share a fuel filter or have separate ones.
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#3 |
Registered User
Join Date: Dec 2006
Location: SLC, UT
Posts: 706
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Re: 2 fuel tanks, 1 problem
Could be the pump or something as simple as a split fuel line in the tank like mtnsackett said. I would suggest replacing the pump anyway since you have to drop the tank or raise the bed anyway. The pumps are relatively cheap(around 65.00) and still available through the dealer or somewhere online like Rockauto.
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#4 |
Registered User
Join Date: Dec 2010
Location: freeburg, illinois
Posts: 885
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Re: 2 fuel tanks, 1 problem
My 87 shares the same filter they all come together at that junction block then run to the filter-tb-return back to the tank i believe is how it goes, i could be wrong though lol
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1987 Chevy V30 - http://67-72chevytrucks.com/vboard/s...d.php?t=573854 1988 IROC-Z Camaro - 305/T5 T-Top 1989 GMC V35 - Marbolo Express http://67-72chevytrucks.com/vboard/s...d.php?t=596850 1991 V2500 Suburban Silverado - Sold 1991 V2500 Suburban Scottsdale - Big Nasty http://67-72chevytrucks.com/vboard/s...d.php?t=497423 2001 Ram 3500 5.9 H.O NV56 EC DRW - Sold 2003 1500 Silverado 2004 Ram 3500 5.9 H.O NV56 CC DRW - Sold 2005 Silverado 2500HD 6.6/ZF6 CC LWB |
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#5 |
Registered User
Join Date: Jun 2010
Location: Centerville, MN
Posts: 81
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Re: 2 fuel tanks, 1 problem
thanks, that is what I was thinking but it has been a while since I have had one to work on.
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#6 |
Registered User
Join Date: Jun 2010
Location: Centerville, MN
Posts: 81
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Re: 2 fuel tanks, 1 problem
oops duel post
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"Not all those who wander are lost." A.R.R. Tolkien... Some of us are exploring to see what is out there in this world! ![]() |
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#7 |
Registered User
Join Date: Sep 2009
Location: Weare,NH
Posts: 1,592
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Re: 2 fuel tanks, 1 problem
Also, make sure you buy an AC Delco replacement pump, don't buy a cheap Airtex like I did.
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#8 |
Registered User
![]() Join Date: Dec 2010
Location: Grantsville, Ut
Posts: 164
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Re: 2 fuel tanks, 1 problem
Great info! Thank you. I will start with the pump and I will use a Delco. I'll let you know if this problem stops after the swap.
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#9 |
Registered User
![]() Join Date: Dec 2010
Location: Grantsville, Ut
Posts: 164
|
Re: 2 fuel tanks, 1 problem
I finally got the Delco in the tank. Thanks for the info. It's hard to get motivated to do it when you can just keeping using one tank. Anyway, problem solved. I have other issues that I am going to start a new post on.
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