2003-04 Mach 1 Registry Owners Club  


Go Back   2003-04 Mach 1 Registry Owners Club > "GO" Discussions > Fluid Systems (coolant, oil, fuel)

Reply
 
Thread Tools Display Modes
Old 11-06-2020, 09:41 AM   #1
03mach69mach
Ford Guy
 
03mach69mach's Avatar
 
Join Date: Feb 2003
Location: Knoxville TN
Posts: 1,405
Possible Fuel Pump or Fuel Pump Driver Module Issue

Here's what I have going on- Car is 2003 with 8,500 miles totally stock. The other day, drove car to gas station across town to fill with 100% gasoline 93 fuel. Car was on 1/4 tank gas at time I filled it up. Car drove great although did notice that the idle was slightly rough at times.

After filling car, started and pulled away from the pump. Car was rough and as I pulled into street, car died. Rolled into parking lot and car would just crank with no fire. Could not hear the pump engage and thought that I had lost the fuel pump. Car towed back to my garage. Car had a P1237 Fuel pump primary circuit malfunction code. Doing research here and other places, people pointed to the Fuel Pump Driver Module. Although I did find someone on this forum who experienced almost the same scenario. That person stated that they had removed the battery negative to allow the computer to "clear" and once re-installed the car started and ran. So, I decided to try this. Removed negative battery cable and turned on the light switch for about 10 minutes, then reinstalled the cable. Car started and ran for approximately 5 minutes, roughly but running. After it died, car would only crank.

I then found a Ford service diagnosis diagram for the Fuel Pump Driver Module. I tested the connector based on the instructions and found that the connector was above 10.9 volts (actually like 12 volts) which says that the FPDM needs to be replaced.

I purchased from Rock Auto, a new aftermarket Fuel Pump Driver Module. Installed in the car, car still only cranked, no start. I have not tried "clearing" the computer at this time with this module. Will do that later today.

Any ideas? Could I have a bad aftermarket FPDM? It seems that the pump will cycle and produce pressure. Because it would start, leads me to believe it may not be the pump and instead, something that is controlling the pump. From what I am reading, the pump pressure is determined by the voltage supplied?

Any ideas or anyone with similar experience please chime in.
__________________
Mark
Blountville TN
1969 Winter Blue Mach 1 428CJ
1988 White LX 5.0 Convertible SOLD
2000 White Taurus SE 3.0 SOLD
2001 BMW 330i SOLD
2002 Harley F150 5.4 Supercharged
2003 Azure Blue Mach 1 4.6 DOHC
2003 Lincoln Town Car 4.6 SOHC
2011 Infiniti G37xS 3.7 DOHC
03mach69mach is offline   Reply With Quote
Old 11-06-2020, 10:16 AM   #2
HAEG
Heppasketties
 
HAEG's Avatar
 
Join Date: Aug 2003
Location: Mercer County, NJ
Posts: 4,740
Re: Possible Fuel Pump or Fuel Pump Driver Module Issue

Do these cars have a shutoff for the fuel pump in case of a crash. Its located in the rear of the vehicle (trunk) I think we have like a shutoff switch. Could that be it??
Following to see what everyone says...
__________________
M1R Member #1829
2011 Shelby GT-500 Grabber Blue
W/SVT Performance Package
Born on Friday, 6-25-2010
Purchased 8-19-2010

2003 Zinc Yellow Auto I/UP (Build #8280 of 9652)
Born on Thursday, 7/17/03
Purchased 8-18-2003 first owner
Sold 8-19-2010 bought GT500
Purchased again 3-3-2017 fifth owner
Purchased for my wife to drive (but she knows I love the car)
HAEG is offline   Reply With Quote
Old 11-06-2020, 11:55 AM   #3
03mach69mach
Ford Guy
 
03mach69mach's Avatar
 
Join Date: Feb 2003
Location: Knoxville TN
Posts: 1,405
Re: Possible Fuel Pump or Fuel Pump Driver Module Issue

Yes, they have the inertia switch. But I believe it is situated before the Fuel Pump Driver Module. And that's why the Ford Service diagnostic has you measure voltage on two pins in the connector. With key on, they say you should have 10.9 volts or more. If yes, key off and replace FPDM.

Part of me thinks that there is nothing wrong with the FPDM but the new one didn't solve the issue.
__________________
Mark
Blountville TN
1969 Winter Blue Mach 1 428CJ
1988 White LX 5.0 Convertible SOLD
2000 White Taurus SE 3.0 SOLD
2001 BMW 330i SOLD
2002 Harley F150 5.4 Supercharged
2003 Azure Blue Mach 1 4.6 DOHC
2003 Lincoln Town Car 4.6 SOHC
2011 Infiniti G37xS 3.7 DOHC
03mach69mach is offline   Reply With Quote
Old 11-08-2020, 02:43 PM   #4
falcongtho3
Moderating at Mach 1
 
falcongtho3's Avatar
 
Join Date: Aug 2002
Location: Baton Rouge, La.
Posts: 16,151
Re: Possible Fuel Pump or Fuel Pump Driver Module Issue

Pump shutoff reset button is on the tail lamp panel next to the drivers side tail lamp assembly inside the trunk.

__________________
Krewe de la Mach Rouge

#340804 13th Mach 1 built
11/07/02 Build Date
12/13/02 Delivery
falcongtho3 is offline   Reply With Quote
Old 11-17-2020, 10:37 PM   #5
ASH302
Soldier for Christ
 
ASH302's Avatar
 
Join Date: May 2009
Location: Willis, TX at The Daddy ASh Ranch
Posts: 30,390
Re: Possible Fuel Pump or Fuel Pump Driver Module Issue

https://autoservicecosts.com/obd2-codes/p1237/

ASh
__________________
2001 lazer red v6 Mustang coupe sold in Aug 2006
2004 screaming yellow 5.0 sc Mach 1 sold in Oct 2012
2013 grey 6 speed coupe GT Mustang Sold in Feb 2014
2013 RED Dodge Charger R/T Sold Nov 2014
2002 custom Blue 02 Auto Trans AM Sold June 2015
1998 Cobra Black Sold summer 2016

Current
2009 Ford F350 FX4 March 2017 (work truck)
2003 OW 5.0 Mach 1 Aug 2020

ASh
ASH302 is offline   Reply With Quote
Old 11-17-2020, 10:38 PM   #6
ASH302
Soldier for Christ
 
ASH302's Avatar
 
Join Date: May 2009
Location: Willis, TX at The Daddy ASh Ranch
Posts: 30,390
Re: Possible Fuel Pump or Fuel Pump Driver Module Issue

From what I researched, it probably a bad fuel pump.

ASh
__________________
2001 lazer red v6 Mustang coupe sold in Aug 2006
2004 screaming yellow 5.0 sc Mach 1 sold in Oct 2012
2013 grey 6 speed coupe GT Mustang Sold in Feb 2014
2013 RED Dodge Charger R/T Sold Nov 2014
2002 custom Blue 02 Auto Trans AM Sold June 2015
1998 Cobra Black Sold summer 2016

Current
2009 Ford F350 FX4 March 2017 (work truck)
2003 OW 5.0 Mach 1 Aug 2020

ASh
ASH302 is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 01:55 PM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
(c) 2002-2013 Mach1Registry.com

<