SPONSORED LINKS

Code PO443, vehicle will not take gas after fuel pump replacement

Tiny
MATTHARSHMAN
  • MEMBER
  • 2007 FORD EXPLORER
  • 4.6L
  • V8
  • 4WD
  • AUTOMATIC
  • 220,000 MILES
After replacing the fuel pump and filter I cannot put but about $8.00 in fuel in the tank before it auto shuts off and you have to lightly squeeze to get fuel in. Ran code reader after a check engine light and have code po443 evap emissions system purge control valve circuit.
Replace the evap pressure sensor above the tank.
Replaced the solenoid over the right rear axle.
Replaced the gas cap.
Replaced purge valve.
And the code still remains and cannot put fuel in the vehicle.
SPONSORED LINKS
Thursday, July 7th, 2022 AT 6:41 PM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,205 POSTS
Hi,

When you replaced the pump, was it only the pump or was the module replaced which contains the pump?

I ask because there is a vent valve before the charcoal canister which is part of the module. If the only the pump was replaced, there could be a blockage.

I attached the diagnostics below for the code you have. (Pics 1 and 2). Pic 3 is the one I feel is of most interest. Make sure the vent tube that is attached to the filler tube isn't damaged and where it connects isn't bent, preventing airflow.

Also, I highlighted from the fuel tank to that tube. Check for restrictions there.

Let me know if this helps or if you have other questions.

Take care,

Joe
Images (Click to make bigger)
Thumb
Thumb
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Thursday, July 7th, 2022 AT 8:56 PM
Tiny
MATTHARSHMAN
  • MEMBER
  • 6 POSTS
I replaced the entire inner contents of the fuel pump assembly, not just the tank. After putting it back in, I was unable to fuel it up then started replacing it part by part. When I took the tank out the second time to replace the pressure switch above the tank I checked for damages. After all this still gets the same pressure noise when you open the gas cap to fuel. I will pull the vent tube and inspect for a clog. Someone also suggested to me that there may be some debris in the tank that is affecting the flap to the tank and that I should unhook the filler tube and poke the flap to maybe jar it loose. That seems farfetched to me but at this point I'm ready to try anything.
Was this
answer
helpful?
Yes
No
Thursday, July 7th, 2022 AT 9:10 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,205 POSTS
Hi,

Anything is possible. Disconnect the charcoal canister and see if it takes fuel. It will set a code, but it can be deleted.

If the canister does nothing, work back to the tank. Also, is there a rubber hose between the tank and the fresh air vent?

Let me know.

Joe
Was this
answer
helpful?
Yes
No
Thursday, July 7th, 2022 AT 9:54 PM
Tiny
MATTHARSHMAN
  • MEMBER
  • 6 POSTS
I disconnected it previously trying to find the issue if. I disconnected the line at the front of the fuel tank that leads to the cannister and it takes fuel no issue.
Was this
answer
helpful?
Yes
No
Friday, July 8th, 2022 AT 5:15 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,205 POSTS
Hi,

That is where the issue is coming from. Go to the canister and see if it takes fuel. If it still doesn't, work your way back to the tank.

Let me know.

Joe
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Friday, July 8th, 2022 AT 7:31 PM

Please login or register to post a reply.

Related Fuel System Fuel Pump Replace/Remove Content

Fuel Pump Replacement
GUIDE
Fuel Pump Replacement
When a fuel pump goes out it can do so one of two ways either it can quit and stop working or it can fail intermittently causing the engine to stall or not start.
VIEW MORE

Sponsored links