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04-27-2017, 02:22 AM | #1 |
Registered User
Join Date: May 2003
Location: Las Vegas, NV
Posts: 67
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Fuel Pump Failure
Error Code P1237 is what I have. The car has 37K miles and sits for months at a time. I drove about 30 miles, parked and started again 20 minutes later. The Mach started, went about 10 feet and went into full on shudder mode and stalled. After 10 minutes, it would start and do the same. Added 5 gallons new fuel. No help. I'm guessing the fuel pump has failed. Before I start the R&R, has this happened to anyone else? Fuses and switch are all good. No other explanation I can find.
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2004 Mach 1 Screaming Yellow VIN- 130815 DOB - 101003 Delivery - 110303 13.87 @ 100.25 (no mods) Visus Louvers Borla Cat Back J&L CAI 4.10 gears 18" FR500 Cooper NSX Former Mustangs 1969 M code Mach 1 1969 S code Mach 1 1969 S code to 428CJ Mach 1 1967 Coupe 1968 FB |
04-27-2017, 04:18 AM | #2 |
And Leadfoot
Join Date: Sep 2004
Location: Easy Street
Posts: 6,468
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Re: Fuel Pump Failure
My fuel pump crapped out last year at 31,000 miles. I was driving along going about 45mph and the engine just completely stalled out. You could crank it, but it wouldn't re-start.
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'23 Fighter Jet Gray Mach 1 (Automatic, 470hp/410tq) '04 Azure Blue Mach 1 (5Spd., 305hp/320tq) '17 Blue Streak Dodge Ram 1500 Quad Cab 4X4 (Automatic, 395hp/410tq) "She's An Underage Angel With A Dented Halo"-She Needs Rock n Roll---Motley Crue Every now and then, say What The F***. What The F***, gives you freedom. With freedom comes opportunity. Opportunity, makes your future. If you can't say it.......you can't do it.----Miles |
04-27-2017, 04:26 AM | #3 |
Registered User
Join Date: May 2003
Location: Las Vegas, NV
Posts: 67
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Re: Fuel Pump Failure
I was lucky to be in a parking lot, just coasted into another stall. First time on a tow truck...
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2004 Mach 1 Screaming Yellow VIN- 130815 DOB - 101003 Delivery - 110303 13.87 @ 100.25 (no mods) Visus Louvers Borla Cat Back J&L CAI 4.10 gears 18" FR500 Cooper NSX Former Mustangs 1969 M code Mach 1 1969 S code Mach 1 1969 S code to 428CJ Mach 1 1967 Coupe 1968 FB |
04-27-2017, 10:17 PM | #4 |
Original Owner
Join Date: Apr 2003
Location: Houston, Texas
Posts: 5,172
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Re: Fuel Pump Failure
Just did mine
Crapped out at 103k Miles P1237 Go to the Fuel pump Driver module located behind the trunk side trim on the driver side. Jump pins 2-3 and pins 9-10. If pump does not come on...you need a pump...
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JB 03 Torch Red Mach 1 21 FJG Mach 1 Stainless Steel Systems Adrenaline Series BBK long tube headers catted x pipe 18x9 18x10- Solid Gloss Black FR5's Nitto 555 g2 275/35r18's 285/35r18 MGW Shifter With Mach1 Shift Knob 4.10's & 31 spline Mosers and 31 Spline Posi Steeda Sport Springs Tokiko Illuminas J@M weight Jacker LCA's J@M Rear UCA's J@M Braided steel brake lines Eibach Sway Bars |
08-03-2019, 08:52 PM | #5 |
2 MACH's...So little time
Join Date: Aug 2003
Location: Puget Sound, WA
Posts: 257
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Re: Fuel Pump Failure
My mach died while driving and pulled a p1237 code after towed home. Thanks Triple A. Next morning, no fuel pressure and don't hear the pump. Here's the weird part, I put on the battery charger keep the battery 100% charge and for the fun of it, I turned the key and the fuel pump purred and got fuel pressure. Started up fine and now I can't do the FPDM test by jumping the pins. So is it the fuel pump or the FPDM?
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'03 Mach 1, 5spd, IUP, Azure Blue ---- Borla, Borla, Borla! '01 GT, Auto, Zinc Yellow ---- Borlas, why not? - sold '71 Mach 1, 4spd, M-code, Bright Blue Met. ---- Dynomax - sold "I'll never get the blues...." |
08-03-2019, 09:49 PM | #6 |
Original Owner
Join Date: Apr 2003
Location: Houston, Texas
Posts: 5,172
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Re: Fuel Pump Failure
I replaced the FPDM as well while I was there. I was able to isolate it was the pump, but the FPDM was just at old...with My luck I would have the FPDM Crap out a week after I did the pump. Also replaced the CCRM as I had a new-old one laying around with no miles on it...
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JB 03 Torch Red Mach 1 21 FJG Mach 1 Stainless Steel Systems Adrenaline Series BBK long tube headers catted x pipe 18x9 18x10- Solid Gloss Black FR5's Nitto 555 g2 275/35r18's 285/35r18 MGW Shifter With Mach1 Shift Knob 4.10's & 31 spline Mosers and 31 Spline Posi Steeda Sport Springs Tokiko Illuminas J@M weight Jacker LCA's J@M Rear UCA's J@M Braided steel brake lines Eibach Sway Bars |
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