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Discussion Starter #1
I am trying to obtain a fuel pump assembly for my 96TB 4.6. The FP assemblies are getting more difficult to obtain. I need member's review of these pumps and most important I need the part number for the Precision FP. I can not find this P# anywhere. TB is completely stock.

Thanks,

Glenn
 

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Why not just replace the pump itself if that's all that is bad? When I did mine back then, I bought a Walbro GSS340, which is 255lph, and swapped it in. Minimal fuss.
 

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Discussion Starter #3
Thanks - but I am having issues with my fuel gauge sending unit so I want to replace the entire assembly.

Anyone know the part number for the Precision Fuel assembly. I would really appreciate anyone's help.

Glenn
 

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What is your fuel gauge doing?
 

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Precision doesn't list a Fuel Pump Sender Assembly for the 94-97 V8 MN12..

They do however have a Fuel Pump Sender Assembly for the 91-93 V8 MN12..Which is Part #A27027

Physically it will drop right in, and plug right in with no fuss..

I can't speak on the reliability of a Precision pump in an MN12 though..

I have used a Precision Fuel Pump Sender Assembly in my F150, and it's been fine for a couple of years now..






Rayo..
 

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Discussion Starter #6
Rayo - thanks for your information - very helpful. Very surprised there is no fuel pump assembly for the 94-97 4.6 anymore only the separate fuel pump, but no assembly. I noticed the A27027 is for the 93 302 running 80-130 psi, but the fuel regulator should lower it to 35-45 psi which the 4.6 specifies. What are your comments on the psi differences?

Also, any reason a 4.6 cannot use the 3.8 fuel pump assembly - which is still available.

In regards to my fuel gauge - it just is not accurate anymore. It is not the gauge it is the sender.
 

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Glenn said:
Also, any reason a 4.6 cannot use the 3.8 fuel pump assembly - which is still available.
If you're referring to the Motorcraft PFS181..The pump attached to it, is undersized for a V8..
As well as having a different shaped sender, so your fuel gauge would probably be off..

I don't foresee there being a psi problem using the (A27027) Precision Fuel Pump Sender Assembly on your 97..

Most of the aftermarket Fuel Pump Sender Assemblies available for our cars, are one size fits all anyways..

I don't know how stock you plan on keeping this car, but if I were changing out the Fuel Pump Sender Assembly on my car I would upgrade..

Basically taking the new fuel pump off of the new Fuel Pump Sender Assembly, and swapping it out for a Walbro 255lph..






Rayo..
 

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WOT Junkie and avid corn burner
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Rayo - thanks for your information - very helpful. Very surprised there is no fuel pump assembly for the 94-97 4.6 anymore only the separate fuel pump, but no assembly. I noticed the A27027 is for the 93 302 running 80-130 psi, but the fuel regulator should lower it to 35-45 psi which the 4.6 specifies. What are your comments on the psi differences?

Also, any reason a 4.6 cannot use the 3.8 fuel pump assembly - which is still available.

In regards to my fuel gauge - it just is not accurate anymore. It is not the gauge it is the sender.
Are you certain it is not your anti-slosh module?
 

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Are you certain it is not your anti-slosh module?
I'd swap that out first, since the gauge isn't connected to the sending unit but to the anti-slosh board; the anti-slosh board is connected to the sending unit.

(And I can pull the dash a LOT easier than the fuel tank!)

SUGGESTION! While you're in there, swap the bulbs in the dash; if they've never been replaced, you might not have any idea how nice the dash can look with all the bulbs working.

RwP
 

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If you're referring to the Motorcraft PFS181..The pump attached to it, is undersized for a V8..
As well as having a different shaped sender, so your fuel gauge would probably be off..

I don't foresee there being a psi problem using the (A27027) Precision Fuel Pump Sender Assembly on your 97..

Most of the aftermarket Fuel Pump Sender Assemblies available for our cars, are one size fits all anyways..

I don't know how stock you plan on keeping this car, but if I were changing out the Fuel Pump Sender Assembly on my car I would upgrade..

Basically taking the new fuel pump off of the new Fuel Pump Sender Assembly, and swapping it out for a Walbro 255lph..






Rayo..
I bought a new fuel pump assembly from Rock Auto, the supplied pump failed within a week, friend hooked me up wit the Walbro 255lph pump by giving me some cash towards it and a employee discount, making my outlay for the part about 100 bucks. He felt bad that the new pump failed. I would go with a Walbro any day of the week, well built and trouble free once wired in.
 

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Discussion Starter #11
Thanks for all your comments - very informative.

Has anyone used the Precision fuel pump A27027 (from the 93 TB) in your 94-97 4.6.


I plan on keeping the TB totally stock.

Thanks,

Glenn
 

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Just saying, a Walbro 255 lph will be superior in quality.
 

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The biggest problem is getting the pump in the exact same place, if you want the gauge to read the same as before.

Measure the distance between the float for the gauge, and the surface of the fuel hat before you change anything, and make sure it's the same afterwards. :)

Also, make sure it's moving freely before you put it in; It's a ***** to have to drop the gas tank again to fix it.


Also, keeping over 1/4 tank of fuel keeps the pump immersed in fuel, and makes it run cooler, and last longer.
:)
 

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The biggest problem is getting the pump in the exact same place, if you want the gauge to read the same as before.

Measure the distance between the float for the gauge, and the surface of the fuel hat before you change anything, and make sure it's the same afterwards. :)

Also, make sure it's moving freely before you put it in; It's a ***** to have to drop the gas tank again to fix it.


Also, keeping over 1/4 tank of fuel keeps the pump immersed in fuel, and makes it run cooler, and last longer.
:)
Really it comes down to making sure the float isn’t hung up on anything. There’s nothing else you can do that would affect the placement of the float unless you damaged the lever or something. The pump hat is keyed to the tank opening and the float is mounted to the hat frame, not the pump itself.

I will say don’t mix around pump hats and tanks though. I put a 95 hat in my 94 tank and it reads 1/8 more low than it should. There are a few differences in the stamping and dimensions I didn’t think anything of at the time I installed it, but unfortunately that’s a future project my OCD demands revisiting to :(
 

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Thanks for all your comments - very informative.

Has anyone used the Precision fuel pump A27027 (from the 93 TB) in your 94-97 4.6.


I plan on keeping the TB totally stock.

Thanks,

Glenn
I have used the Precision Fuel Pumps and they are GARBAGE!!! If you Google the Precision Reviews you'll find that everyone who has installed them have had nothing but problems with them, my first one lasted for about 3 months and the replacement only lasted for about 10 minutes. Find a different brand.
 

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I only use Walbro fuel pumps.

The stock pump is an 86lph pump; summit and other places sell these and larger.

I replace all of mine with 255lph pumps for upgrade room; our systems recycle unused fuel to the tank, so it circulates if you're not burning it.

If you're doing a DD, a 255 is bigger than you want.

Watch out for Ebay and amazon fakes; buy from a reputable supplier, and compare to the YT videos of fakes.
 

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I get mine from RobertP, so far, lol.

Dang, I went to link his Website; did he get the same hosting as TCCOA? ?
 
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