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Fuel Code 452. Fuel pump not working. Help

  • Thread starter Thread starter Jason95cobra
  • Start date Start date Apr 15, 2020
J

Jason95cobra

New Member
Apr 15, 2020
4
0
1
Florida
Apr 15, 2020
#1
  • Apr 15, 2020
  • #1
Jumped the service port and still pump won't turn on. The only time it will turn on is when I try to test the wires that go directly to the pump the pump starts running as soon as I touch both leads of my meter to the wires.
What's happening??
 

revhead347

Apparently my ex-husband made that mistake.
20+ Year Stangneter
Jun 14, 2004
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Acworth, GA
Apr 16, 2020
#2
  • Apr 16, 2020
  • #2
Bad relay?

Kurt
 

kiddiccarus

The first widely accepted Tranny
20+ Year Stangneter
Dec 24, 2003
1,789
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30 Mins from a Ragged GT
Apr 16, 2020
#3
  • Apr 16, 2020
  • #3
Was there a circumstance that happened before this problem began?
Did you replace something? Go off road? Bang a Hoe in the back seat? Install something?

Somehow the meter is closing the circuit and allowing the voltage to get to the Fuel Pump.

  1. I would take the meter and test for continuity in the wires to help find where the fault is located.
  2. Replace the Relay.
 
J

Jason95cobra

New Member
Apr 15, 2020
4
0
1
Florida
Apr 16, 2020
#4
  • Apr 16, 2020
  • #4
It's actually code 542. Something about secondary ground from pcm to fuel pump
 
J

Jason95cobra

New Member
Apr 15, 2020
4
0
1
Florida
Apr 16, 2020
#5
  • Apr 16, 2020
  • #5
I replaced the ccrm with a working one out of my 95 cobra. Still nothing
 
J

Jason95cobra

New Member
Apr 15, 2020
4
0
1
Florida
Apr 16, 2020
#6
  • Apr 16, 2020
  • #6
The car was warming up in driveway one day and suddenly just shut off and never has cranked since. This has been driving me nuts
 
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