Should I replace fuel pump?
Thread Starter
|
Junior User
Joined: Feb 2010
Posts: 76
Likes: 0
Should I replace fuel pump?
So my 96 F250 with a 460 threw lean codes PO171 and PO174.
I checked for vacuum leak. None.
I tested O2 sensors per this site and they checked out. Part 1 -Troubleshooting P0171 and P0174 (Ford 4.6L, 5.4L)
Tested fuel pressure.
Front: 32 psi key on, 32 psi running, dropped to ~29 psi under throttle
Rear: 38 psi key on, 34 psi running, up to 40 psi under throttle
Been driving around on rear tank to see if it will throw the codes again. Nothing so far. Front fuel pump is obviously wearing out. Should I just go ahead and replace it?
Thanks in advance for your help.
I checked for vacuum leak. None.
I tested O2 sensors per this site and they checked out. Part 1 -Troubleshooting P0171 and P0174 (Ford 4.6L, 5.4L)
Tested fuel pressure.
Front: 32 psi key on, 32 psi running, dropped to ~29 psi under throttle
Rear: 38 psi key on, 34 psi running, up to 40 psi under throttle
Been driving around on rear tank to see if it will throw the codes again. Nothing so far. Front fuel pump is obviously wearing out. Should I just go ahead and replace it?
Thanks in advance for your help.
Post Fiend
Joined: Oct 2003
Posts: 9,176
Likes: 4
From: Western Central NV
If your doing it yourself, you may have the just a plugged pickup screen Like I had on mine. But I'm paying to have it done so I'm having new pumps installed front & rear so I don't have to pay again. (I hope)
You can buy the screens separate for like $7.
Craig
You can buy the screens separate for like $7.
Craig
Post Fiend
Joined: Oct 2003
Posts: 9,176
Likes: 4
From: Western Central NV
Just a note Pay the extra & get a Delphi Pump installed. Delphi made OEM pumps for many manufactures & I have used them in Chevy Ford & Honda they have never failed me. I have others Airtex for one last 10,000 miles & quit me at midnight on a rural Nevada highway, in a snow storm, 100 miles from home.
Craig
Craig
Thread Starter
|
Junior User
Joined: Feb 2010
Posts: 76
Likes: 0
I will ask my mechanic what brand they use. I know they use what they consider to be the best. They take good care of their customers.
Trending Topics
Post Fiend
Joined: Oct 2003
Posts: 9,176
Likes: 4
From: Western Central NV
Well I know is a Delphi pumps retail for around $250 & the Flat Rate to R&R the pump is 1.5 hours, So $350 is a great price with a Delphi. OEM Ford Motorcraft retail for $450 for the pump.
That is why I said something. I haven't got the bill for having both mine replaced yet. It is should be done this week they told me.
Craig
That is why I said something. I haven't got the bill for having both mine replaced yet. It is should be done this week they told me.
Craig
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Thread Starter
|
Junior User
Joined: Feb 2010
Posts: 76
Likes: 0
I think they use Napa to get their parts. I believe the quote was for a Napa branded fuel pump. The Delphi is only $30 more. I will ask that they use a Delphi if you think it is the next best thing to Motorcraft.
Thread
Thread Starter
Forum
Replies
Last Post
Dean06919
1987 - 1996 F150 & Larger F-Series Trucks
4
Oct 10, 2017 08:59 AM
Aj213121
Explorer, Sport Trac, Mountaineer & Aviator
3
Sep 23, 2016 05:16 PM
Christopher Layton
1987 - 1996 F150 & Larger F-Series Trucks
9
Feb 26, 2016 11:45 AM
caaront
1987 - 1996 F150 & Larger F-Series Trucks
7
Apr 16, 2014 09:08 AM
Fordenthusiasts
1987 - 1996 F150 & Larger F-Series Trucks
8
Jul 4, 2011 07:32 PM