New option for fuel pump replacement

[mhobtr]

Originally Posted by Livin' in the 80's

Did you have a pump failure or did you replace as a precaution?

I wouldn't replace a working fuel pump just as a precaution. There is a good chance the new one will not be as reliable as the one it replaced.

If you are worried about being stranded, get one of the primary/secondary reverse harnesses so if your primary pump dies, you can get home on the secondary.

Last year I replaced the entire pump assembly on my 91 with a NIB ACDelco unit. Never was pleased and turned out the check valves in both pumps were bad. Replaced the pumps and everything's great now.

BTW, if you buy new pumps, make sure the check valves are working as soon as you take them out of the box. If not, you can get a replacement or refund and not get stuck like I did.

[PhillipsLT5]

I have them in only a few weeks & a few hundred miles, I went with airtex due to Marc's suggestion & Jerry picked it as his #2 suggestion, these guys KNOW, my pump did die on hiway @ 74 MPH in HOV lane on cruise control, engine shut off, motor would start & die in 1 second, literally rolled off hiway, installed fuel pump limp home jumper that I had in car and made it home fine, car did not sound right or run right with jumper installed but it WORKED, thanks again to all who designed, built & sold these, replaced the other pump just as a I am already in there why not, that pump was working but over 27 yrs old and 83K miles

[Roadster]

Interesting thread, a good read....
After reading some other fuel pump threads back in April, I started doing some research about the pumps. Although I have a back up set from Rock Auto, I wanted to check out more info on different pumps.
The one that caught my interest was the Denso Fuel Pump. I know at least one member has them installed. I think the units installed are:
DENSO #951-5016. So checking them out further my info showed me that this particular # is for the LT1 and not the LT5. And let me say that in no way am I referring that this person installed the wrong part. I am just posting the info from my research. And I am not implying in any way that this part # does not work on the LT5, because this member is using them and to my knowledge is very satisfied.
The number that I found to be for the 90-95 LT5 is: DENSO #951-5006
I don't know or have any knowledge of the specs for the two part numbers listed. Again I am just relaying the info that was relayed to me.
Both part #'s to my knowledge are direct fit units. The Denso units can also be a little more expensive, but not over the top.
The Fuel Pump Filters # DENSO 952-0094 are also listed for the LT5.

As of now the 951-5006 pumps are on National Back Order and should be available sometime in the near future for anyone interested.
Just thought I would pass this along......

[Livin' in the 80's]

Someone has been here. Aftermarket clamps? What clamps were original?


Sent from my iPhone using ZR-1 Net Registry

[-=Jeff=-]

So I am probably living on borrowed time.. 70K miles and I never pulled the tank unit to replace the pumps.

But I am curious, why couldn't we runt he L98/LT1 single pump? Is it possible? Granted OEM may not be enough fuel but the 255lph might be?

[Roadster]

FYI, it has been said that keeping your tank full will also keep the pumps cooler and more efficient and last longer, because the pumps are submerged in the fuel. And if you always like to run on a low tank, the pumps are not submerged and therefore build up heat because the fuel is not keeping them cool causing them to wear out faster.

After hearing this info, it makes good sense. Just passing it along!!!

[Roadster]

Originally Posted by -=Jeff=-

So I am probably living on borrowed time.. 70K miles and I never pulled the tank unit to replace the pumps.

But I am curious, why couldn't we runt he L98/LT1 single pump? Is it possible? Granted OEM may not be enough fuel but the 255lph might be?

Don't think your on borrowed time, mine is also approaching 70k and to my knowledge has not had a pump change. I don't remember see that in the service records that I have.

I think you answered your own question, yes fuel starvation w/OEM single pump...
Even with a more powerful single pump, I would be concerned...JMO

[XfireZ51]

I think that if GM could have gotten away w a single pump, they would have.

[mhobtr]

One of the more popular replacements is the PERFORMANCE ELECTRIC P240KC sold by Rock Auto. There are numerous posts about them and I don't remember any being negative.

They have been out of stock for a while but are now relisted at $19.22 each which is a great deal.

I just ordered two for spares.

[-=Jeff=-]

Originally Posted by XfireZ51

I think that if GM could have gotten away w a single pump, they would have.

sure 27 years ago.. I wonder if there is a replacement now that would work..

Besides, doesn't a pump shut off after a certain amount of time?