Fuel Pump for an L98

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Aug 7, 2001 | 12:36 PM

90vert

Thread Starter

6th Gear

Joined: Jul 2001

Posts: 6

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From: Coppell, TX, USA

Fuel Pump for an L98

recently my poor baby ran out of fuel.:rolleyes: It seems as though the fuel level sending unit got stuck, that is fixed, but the car will not start. I was wondering if you are supposed to be able to hear the pump run when you turn the key switch to the on position, because I am not hearing anything. I took the pump out and it would not work either, I think it froze up when it ran out of fuel. Does anyone know what kind of GPH the fuel pump is supposed to deliver and how much PSI I should be looking for in a new one.
My 90 convertible is bone stock with the L98 motor.
Thanks in advance!

Aug 7, 2001 | 01:18 PM

65Z01

Team Owner

Joined: Dec 2000

Posts: 90,675

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From: SE NY

Cruise-In II Veteran

Re: Fuel Pump for an L98 (90vert)

I'm not sure about the GPH but believe the PSI is about 60.

I knew mine was dead when I verified +12Vdc at the connector by the tank and got no pressure at the fuel rail.

Aug 7, 2001 | 04:52 PM

Aggravated4life

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Joined: Aug 2000

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Re: Fuel Pump for an L98 (65Z01)

Dont know the specs but stay with a stock A/C delco pump when you go buy another one, I think theyre the best to use...also check the relay and the fuse as well if youre not sure they didnt die.

I had a car run out of gas and the pump mustve got hot enough to blow the fuse...the fuse blew and I put new gas in the car and changed the fuse and thankfully the pump didnt die from that..it worked.

Also, keep your gas above 1/4 or try half tank at all times...if you do, the pump will last for years.
(Im assuming you know this..this will help others who didnt know)

My former boss who used to be a Class A tech, told me every car he did that had a bad pump was due to the customer driving around on low gas all the time.Gasoline keeps the fuel pump cool and will extend its life if the tank is always over 1/4 to half tank filled.

Btw change your fuel filter when you do the new pump too.After you take the sending unit off the back, look inside with a flashight...I bet youre going to see some crap floating around..maybe some rust particles or dirt.I couldnt believe how much crap I had in my tank.

Aug 7, 2001 | 07:32 PM

M2001

Burning Brakes

Joined: Apr 2000

Posts: 900

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From: New Jersey

Re: Fuel Pump for an L98 (90vert)

If you're interested in buying a new fuel pump, I have a high performance fuel pump that replaces the stock unit. The size of the fuel pump is almost double of stock and it's good for a motor making up to 450 horses. The price is $150 delivered to your door. If I remember correctly, the fuel pump sells for over $300 new. The fuel pump I have was used for about 5-6 thosands miles. The reason I am selling this pump is because I am selling my car and all the high performamce parts I have a accumulated over the years. I will be selling many more parts that were on my 1988 Corvette.

Aug 7, 2001 | 07:47 PM

BILLY D

Pro

Joined: Aug 2000

Posts: 519

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From: South River N.J.

Re: Fuel Pump for an L98 (Bill's86Coupe)

Bill: Thanks for the tip. I didn't know this. Does this mean that with less than a quater tank the pump is exsposed to air and if so what prevents the pump from sucking up air? Thanks. Billy D.

Aug 7, 2001 | 08:43 PM

Aggravated4life

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Re: Fuel Pump for an L98 (BILLY D)

Quote:

Bill: Thanks for the tip. I didn't know this. Does this mean that with less than a quater tank the pump is exsposed to air and if so what prevents the pump from sucking up air? Thanks. Billy D.

The pump sits down pretty far enough to the bottom of the tank to still be surrounded by some gasoline when it gets real low...the only way I can think its going to suck air in, is if you run completely out of gas or take corners real hard and the fuel slosh going back and forth can expose the strainer on the bottom of the pump to air...hence the BOG down/Hesitation feeling one gets when they take corners hard or launch hard on very low gas.

Im not an expert on that but thats pretty much what Ive gathered spending too much time on the forum.

Btw,guys is the gas tank half empty or half full?

:cheers:

Aug 8, 2001 | 12:19 AM

samc

Burning Brakes

Joined: Jul 1999

Posts: 768

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From: St. Petersburg FL

Re: Fuel Pump for an L98 (90vert)

here's where i'm getting my next fuel pump... http://members.home.com/syclone/APE/fuelpump.html

Aug 8, 2001 | 02:21 AM

90vert

Thread Starter

6th Gear

Joined: Jul 2001

Posts: 6

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From: Coppell, TX, USA

Re: Fuel Pump for an L98 (Bill's86Coupe)

Hey guys thanks a lot. I had already checked to see if there was power going to the wires for the pump and there was so now its off to the parts store tomorrow for the new pump, pump filter (sock), and the fuel filter. I think I was quoted $59.95 for the pump, $5.00 for the sock thing, and $8.99 for the fuel filter (all at O'riley's auto parts). Hope these are good prices. Thanks again for everyones help!!