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Author Topic: Fuel pump for 1976 Eldorado with EFI  (Read 186 times)

Offline dennisspeaks

  • Posts: 324
  • Name: Dennis Mitchell
Fuel pump for 1976 Eldorado with EFI
« on: January 13, 2022, 10:20:59 PM »
Does the EFI fuel pump for the 76 Eldorado come with the fuel sending unit and look like this?  If not does someone have a picture and part number?

Thanks,

Dennis
1978 Biarritz
1978 Eldo
1975 Caprice
1976 Eldo conv
1994 Deville (giving to youngest daughter after winter)
1989 Fleetwood
2010 SRX
1978 Eldorado Biarritz - sold
1978 Eldorado Biarritz twin to my current 78 - sold
1974 Eldorado - RIP
1975 Eldorado - sold
1976 Eldorado convertible - sold
1990 Sedan Deville  -gave to son
1988 Fleetwood Brougham - gave to daughter
1968 GTO (sold)
1965 Olds 442 -sold

Offline TJ Hopland

  • Posts: 9987
Re: Fuel pump for 1976 Eldorado with EFI
« Reply #1 on: January 14, 2022, 11:40:45 AM »
Seems like I have read this stuff is pretty hard to find these days but I also think I remember reading that are EFI group here was testing a more modern and easier to find single pump setup.    Hopefully those guys will be along soon to update how that testing was going. 
StPaul/Mpls, MN USA

73 Eldo convert w/FiTech EFI
80 Eldo Diesel
90 CDV
And other assorted stuff I keep buying for some reason

Offline Phil Weber

  • Posts: 79
  • Name: Phil Weber
Re: Fuel pump for 1976 Eldorado with EFI
« Reply #2 on: January 14, 2022, 05:49:34 PM »
The original #25000917 is no longer available . I replaced the pump in my '76 sedan with a Carter p74012 . This is listed to suit 77-78 models but seeing the tanks are the same 76-78 there wasn't a problem.
They are for sale on Ebay .
https://www.ebay.com.au/itm/184657882896?epid=193376421&hash=item2afe77af10:g:Ju0AAOSwvwRgIyAG

Other brands are Perfect Circle # 602-2005 and Sealed Power # 225-37.

Phil


Offline dennisspeaks

  • Posts: 324
  • Name: Dennis Mitchell
Re: Fuel pump for 1976 Eldorado with EFI
« Reply #3 on: January 14, 2022, 07:54:45 PM »
Thanks TJ, yes a one pump would be ideal. 
1978 Biarritz
1978 Eldo
1975 Caprice
1976 Eldo conv
1994 Deville (giving to youngest daughter after winter)
1989 Fleetwood
2010 SRX
1978 Eldorado Biarritz - sold
1978 Eldorado Biarritz twin to my current 78 - sold
1974 Eldorado - RIP
1975 Eldorado - sold
1976 Eldorado convertible - sold
1990 Sedan Deville  -gave to son
1988 Fleetwood Brougham - gave to daughter
1968 GTO (sold)
1965 Olds 442 -sold

Offline dennisspeaks

  • Posts: 324
  • Name: Dennis Mitchell
Re: Fuel pump for 1976 Eldorado with EFI
« Reply #4 on: January 14, 2022, 08:02:03 PM »
Yes that was my delima, good to know someone has tried other pumps and I assume they are working with no issues.   I really appreciate your passing this info along Phil, it eases my anxiety and these days I don't need any extra anxiety.

How that I know there is replacements it's full speed ahead.  You and TJ made my day.

Cheers!


The original #25000917 is no longer available . I replaced the pump in my '76 sedan with a Carter p74012 . This is listed to suit 77-78 models but seeing the tanks are the same 76-78 there wasn't a problem.
They are for sale on Ebay .
https://www.ebay.com.au/itm/184657882896?epid=193376421&hash=item2afe77af10:g:Ju0AAOSwvwRgIyAG

Other brands are Perfect Circle # 602-2005 and Sealed Power # 225-37.

Phil
1978 Biarritz
1978 Eldo
1975 Caprice
1976 Eldo conv
1994 Deville (giving to youngest daughter after winter)
1989 Fleetwood
2010 SRX
1978 Eldorado Biarritz - sold
1978 Eldorado Biarritz twin to my current 78 - sold
1974 Eldorado - RIP
1975 Eldorado - sold
1976 Eldorado convertible - sold
1990 Sedan Deville  -gave to son
1988 Fleetwood Brougham - gave to daughter
1968 GTO (sold)
1965 Olds 442 -sold

Offline bcroe

  • Posts: 3773
Fuel pump for 1976 Eldorado with EFI
« Reply #5 on: January 14, 2022, 09:05:57 PM »
Good to hear, there are new replacements available.  Understand,
an exact replacement is a low pressure pump, to be used in the
original 2 pump system. 

A few owners have experimented with using a high pressure, in
tank pump, but this is apparently not an off-the-shelf item at
this time.  The one I tried is not big enough for a 500 engine. 
Bruce Roe

Offline dennisspeaks

  • Posts: 324
  • Name: Dennis Mitchell
Re: Fuel pump for 1976 Eldorado with EFI
« Reply #6 on: January 14, 2022, 09:43:52 PM »
Thanks Bruce, I had just messaged and saw you had replied to this post.
1978 Biarritz
1978 Eldo
1975 Caprice
1976 Eldo conv
1994 Deville (giving to youngest daughter after winter)
1989 Fleetwood
2010 SRX
1978 Eldorado Biarritz - sold
1978 Eldorado Biarritz twin to my current 78 - sold
1974 Eldorado - RIP
1975 Eldorado - sold
1976 Eldorado convertible - sold
1990 Sedan Deville  -gave to son
1988 Fleetwood Brougham - gave to daughter
1968 GTO (sold)
1965 Olds 442 -sold

Offline dennisspeaks

  • Posts: 324
  • Name: Dennis Mitchell
Re: Fuel pump for 1976 Eldorado with EFI
« Reply #7 on: January 16, 2022, 01:39:58 AM »
THANKS TO ALL WHO CHIMED IN.  i APPRECIATE IT!

I bought the 76 Eldorado convertible today, now just got to get her home.
1978 Biarritz
1978 Eldo
1975 Caprice
1976 Eldo conv
1994 Deville (giving to youngest daughter after winter)
1989 Fleetwood
2010 SRX
1978 Eldorado Biarritz - sold
1978 Eldorado Biarritz twin to my current 78 - sold
1974 Eldorado - RIP
1975 Eldorado - sold
1976 Eldorado convertible - sold
1990 Sedan Deville  -gave to son
1988 Fleetwood Brougham - gave to daughter
1968 GTO (sold)
1965 Olds 442 -sold

Offline Big Fins

  • Posts: 1642
  • CLC Number: 22631
  • Name: John Serio
Re: Fuel pump for 1976 Eldorado with EFI
« Reply #8 on: January 16, 2022, 02:58:44 AM »
Get out that can of elbow grease and let's see what you have under all of that dirt and dust.
Current:
1976 Eldorado Convertible in Crystal Blue FireMist with white interior and top.
1969 Fleetwood Brougham in Chalice Gold FireMist with matching interior and top.

Past and much missed:
1977 Brougham de Elegance
1976 Eldorado Convertible
1972 Fleetwood Brougham
1971 Sedan de Ville
1970 de Ville Convertible
1969 Sedan de Ville
1959 Sedan deVille

Offline 79 Eldorado

  • Posts: 725
  • Name: S Kent
Re: Fuel pump for 1976 Eldorado with EFI
« Reply #9 on: January 16, 2022, 10:31:05 AM »
Good to hear, there are new replacements available.  Understand, an exact replacement is a low pressure pump, to be used in the original 2 pump system. 

A few owners have experimented with using a high pressure, in tank pump, but this is apparently not an off-the-shelf item at this time.  The one I tried is not big enough for a 500 engine. 
Bruce Roe
Bruce,
The one linked on eBay doesn't seem to say if it's a low pressure pump but it's a short height pump and looks "identical" to the one in the photo Dennis posted. By short I mean half the height of what I'm accustom to seeing for today's single in-tank pumps.

Is our existing fuel pressure regulator able to deal with the pressure output of common EFI pumps of today (normally 60psig system of today versus our ~40psig system)?  I haven't taken my Cadillac regulator apart but is it simply a spring operated bypass regulator with a vacuum adjusted "trim" (fine tune)? It seems if it's a spring operated pressure relief it would work.

I recently installed an EFI system on my Chevelle. It's a single pump system. I investigated quite a bit to familiarize myself with what's out there especially with pumps and sending units. I found one "ready" option for in-tank regulators but the regulators were for 60psig systems and not ~40psig. In my case I ended up using an external Aeromotive regulator and a return line (already existing in the case of the '76 Dennis is working on). I created a pressure test gauge with an air coupling quick connect, plus ball valve for shut-off, which made it very easy to check the system dry for leaks and as well as for adjusting the Aeromotive regulator.

I had to essentially build my own sending unit for the Chevelle but I was really happy with the results. My biggest issue was the sending unit head was probably the smallest I've ever seen.

Scott


Offline dennisspeaks

  • Posts: 324
  • Name: Dennis Mitchell
Re: Fuel pump for 1976 Eldorado with EFI
« Reply #10 on: January 16, 2022, 10:37:05 AM »
I was just making sure all parts were available and getting a guestimate of what it is going to cost before going ahead with the purchase.  Well the good news is yesterday I now own her so the next step is locating the fuel injection seals and fuel pump and other parts while I am waiting to bring her home.  She will be running by spring with tons of elbow grease Big Fins.




Get out that can of elbow grease and let's see what you have under all of that dirt and dust.
1978 Biarritz
1978 Eldo
1975 Caprice
1976 Eldo conv
1994 Deville (giving to youngest daughter after winter)
1989 Fleetwood
2010 SRX
1978 Eldorado Biarritz - sold
1978 Eldorado Biarritz twin to my current 78 - sold
1974 Eldorado - RIP
1975 Eldorado - sold
1976 Eldorado convertible - sold
1990 Sedan Deville  -gave to son
1988 Fleetwood Brougham - gave to daughter
1968 GTO (sold)
1965 Olds 442 -sold

Offline Big Fins

  • Posts: 1642
  • CLC Number: 22631
  • Name: John Serio
Re: Fuel pump for 1976 Eldorado with EFI
« Reply #11 on: January 16, 2022, 02:19:48 PM »
Equipped exactly the same as mine, even the colors. Good luck with it! b 8)
Current:
1976 Eldorado Convertible in Crystal Blue FireMist with white interior and top.
1969 Fleetwood Brougham in Chalice Gold FireMist with matching interior and top.

Past and much missed:
1977 Brougham de Elegance
1976 Eldorado Convertible
1972 Fleetwood Brougham
1971 Sedan de Ville
1970 de Ville Convertible
1969 Sedan de Ville
1959 Sedan deVille

Offline bcroe

  • Posts: 3773
Re: Fuel pump for 1976 Eldorado with EFI
« Reply #12 on: January 16, 2022, 03:51:34 PM »
Quote from: 79 Eldorado
Is our existing fuel pressure regulator able to deal with the pressure output of common EFI pumps of today (normally 60psig system of today versus our ~40psig system)?  I haven't taken my Cadillac regulator apart but is it simply a spring operated bypass regulator with a vacuum adjusted "trim" (fine tune)? It seems if it's a spring operated pressure relief it would work. Scott 

The pump might be capable of 60psi, but that will only occur
if flow is somewhat restricted.  The Cad regulator will allow extra
flow back to th tank, limiting pressure.  The objective of the system,
is to maintain 39psi across the injector input/outout.  So if manifold
absolute pressure drops 2psi (vacuum), the regulator will drop to
37psi per its manifold vacuum input.

Now there are systems with no return line.  They regulate pump
voltage to achieve pressure regulation.  Probably a lot more
efficient, using more electronics instead of brute force.  Bruce Roe

Offline dennisspeaks

  • Posts: 324
  • Name: Dennis Mitchell
Re: Fuel pump for 1976 Eldorado with EFI
« Reply #13 on: January 16, 2022, 04:16:04 PM »
Thanks man, I appreciate that.  Once I found out that the parts were available I was all in.  Beats having to fly somewhere to look at a car, maybe buying it maybe not and pay shipping fees when this is right in my back yard.  This way by doing and having the work done I know what's been done.  Kinda nice they are from the same herd too and has the factory parade boot.  I like the Western Cyclone I wheels too.  I have two sets of the Western's II verson, one set is going on the 78 Biarritz and the 77 Eldo is going to keep the yellow matching hubcaps for all different looks.

Cheers!

Equipped exactly the same as mine, even the colors. Good luck with it! b 8)
1978 Biarritz
1978 Eldo
1975 Caprice
1976 Eldo conv
1994 Deville (giving to youngest daughter after winter)
1989 Fleetwood
2010 SRX
1978 Eldorado Biarritz - sold
1978 Eldorado Biarritz twin to my current 78 - sold
1974 Eldorado - RIP
1975 Eldorado - sold
1976 Eldorado convertible - sold
1990 Sedan Deville  -gave to son
1988 Fleetwood Brougham - gave to daughter
1968 GTO (sold)
1965 Olds 442 -sold

 

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