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Fuel pump replacement

roger longman

Well-known member
Joined
May 13, 2008
Messages
558
Location
southern california
Corvette
1977 c3 orange ! 1988 c4 kinda purple 1991 'race
Hi all, I need to replace the fuel pump on my '88. I would appreciate help from members as to which make and which supplier ? Thanks in advance......Roger. :w
 
Roger,
This is a pretty easy job. I used an exact match pump from NAPA, including a new screen and filler neck gasket. This Delphi pump was around $100. Everything hooked up properly. When you remove the bolts around the filler neck, they have o-rings that should stay attached. If they are old, they could fall apart and into the tank. I replaced them with HNBR green rings from Harbor Freight (they have a kit for $10).

Part Number: DFP FE0110
Product Line: Delphi Fuel Pumps

:thumb
 
Roger,
This is a pretty easy job. I used an exact match pump from NAPA, including a new screen and filler neck gasket. This Delphi pump was around $100. Everything hooked up properly. When you remove the bolts around the filler neck, they have o-rings that should stay attached. If they are old, they could fall apart and into the tank. I replaced them with HNBR green rings from Harbor Freight (they have a kit for $10).

Part Number: DFP FE0110
Product Line: Delphi Fuel Pumps

:thumb

C4 fuel pumps do not use "o-rings" they use a round, flat gasket. The last C4 pump/sender assy I replaced was on an 18-year old car and the old gasket was still servicable, but, since the new assy came with a gasket I discarded the old one and used the new one.

Typically, replacement pump/sender assemblies come with a new gasket but if you are just going to replace the pump--ie: pull the pump/sender assy, remove the old pump and install a new one, you may not get a gasket. If you acquire your gasket from a non-automotive source that sells cheap tools, supplies and parts, make sure the gasket material is compatible with ethanol-blended gasoline before you buy. If it's not compat. with E10 gas, you'll regret it.

There are a lot of cheap fuel pumps out there but I have no experience with the low-end of the market.

The good stuff comes from AC Delco, Denso, Airtex or Racetronix.
Aftermarket Vette parts vendor and CAC sponsor, Zip Products sells some of those brands.

I have used Denso, Racetronix and Zip Products fuel pumps in Corvettes and other late model GM cars, all with good results.
 
I replaced my fuel pump last week on my '89 the hardest part was to disconnect the hoses, attached for 20 years plus gave me a bit of a fight to pull them off but I prevailed. Actual I bought the strainer and pump from Zip they have a PDF file on line that will give you a step by step procedure. The pump was about $100. strainer $25. I would recommend changing the strainer while you have the pump out, the old strainer would not come off my old pump. This was the easiest fuel pump change I ever worked on. Good luck!:thumb
 
89vetter.
Nice instructions. :thumb
C4 Corvette Fuel Tank Sending Unit Replacement | CorvetteMagazine.com

As Hib points out, I'm not sure why mine had the o-rings on the bolts. They are not listed in the FSM. Anyway, I replaced the gasket and o-rings.

My comment about "o-rings" was in re: the seal between the pump/pickup assy and that tank. I may have misunderstood "TedC" to mean use of a large o-ring instead of the flat, round gasket. Sorry for the confusion.

I have also seen tiny o-rings around the bolts which hold the assy to the tank. They are obviously to seal around the bolts rather than to seal the pump/pickup to the tank. Not sure why they are there. I simply reused them.
 

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