R50/R53 :: Hatch Talk (2002-2006) Cooper (R50) and Cooper S (R53) hatchback discussion.

R50/53 No power to fuel pump

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Old 10-16-2022, 06:48 AM
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No power to fuel pump

Hey guys, first time posting a question. My 2006 mini R53 just quit with no codes. Was running fine. I am aware that fuel pump and fuel pump relays are a known issue. Mine has about 100k Miles on it. I decided to just replace the fuel filter and fuel pump anyway. Still would not start. I then replace the fuse block as mine has the relay integral to the fuse block. Still will not start.

Any ideas?

thanks
 
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Old 10-16-2022, 08:16 AM
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Fuel:
Can you hear the fuel pump running when you first turn the key?
Have you checked the pressure at the rail/shader valve?
The fuel filter can also be a challenge (for some) when replacing = Not sealing correctly.
May want to pop the back seat and take a 2nd look?
 
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Old 10-16-2022, 08:20 AM
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Originally Posted by Here2Go
Fuel:
Can you hear the fuel pump running when you first turn the key?
Have you checked the pressure at the rail/shader valve?
The fuel filter can also be a challenge (for some) when replacing = Not sealing correctly.
May want to pop the back seat and take a 2nd look?
I did check the fuel filter, and even disconnected the fuel line to it and there was no fuel at all. seems to be electrical, I even checked the 15amp fuse in the engine bay that is part of the circuit according to the service manual.
No fuel pump running
checked the fuse inside the car, it has 12v on one side. appears nothing is triggering the fuel pump relay. when the key is in the on position, i get about 1.5v on the 15amp fuse F03 on engine bay fuse block. very puzzling.
 

Last edited by R53Orlando; 10-16-2022 at 09:45 AM. Reason: Update
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Old 10-17-2022, 07:08 PM
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Try releasing pressure at the valve on the end of the fuel rail. Trapped air can prevent starting. I don't know if this is a problem after replacing the fuel pump but it's worth a shot. Have a thick towel/rag handy so that fuel doesn't go everywhere.
 
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  #5  
Old 10-18-2022, 10:44 AM
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You might also try reseating the top of the fuel filter housing. If it's not completely locked in place your car will not start. Be sure to press down hard when turning.
 
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Old 10-18-2022, 11:09 AM
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Sounds like a dead pump.....
 
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Old 10-25-2022, 05:13 AM
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Hi guys,
double checked the filter housing install. I pulled the plug on the pump and applied 12v directly and the pump operated properly.

I checked the codes and getting P1692. Will not clear. I also removed the battery, had it checked and reinstalled with a full charge. According to other threads, it is not clear to me how to diagnose the P1692 code. Seems the ECM is not allow the car to fire.

Any other help would be appreciated. really don't want to have it towed to the dealer.
 
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Old 10-25-2022, 05:36 AM
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For P1692, the Bentley manual mentions the throttle body and the supercharger. Maybe check the throttle body connector. For the supercharger, make sure the belt is in good condition and properly tensioned and the the by-pass valve can open and close.
 
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Old 10-25-2022, 05:37 AM
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This is a long shot but if our cars have an inertia switch it would be worth 2x checking that it didn't get tripped..
lol back in mY thunderbird ( mn12) days me and my buddies did it to each other constantly, all we had to do was slap the back 1/4 above the wheelwell and it was enough to trip the switch and cause no power to tge fuelpump because it would trip the switch THAT easily.
 
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Old 10-25-2022, 05:52 AM
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Originally Posted by dmath
For P1692, the Bentley manual mentions the throttle body and the supercharger. Maybe check the throttle body connector. For the supercharger, make sure the belt is in good condition and properly tensioned and the the by-pass valve can open and close.
but he's not getting power to his pump and cannot hear it prime ? I don't think it matters even if it had a bad tbody or not.. once key on, the pump should begin its priming process , every time the key is put into power position it should always prime once every new power cycle..
it seems his fuelpump isnot being told to turn on.. this actually sounds like a bad ecu if it were my guess.. if it just died randomly, new pump ect still no power to the pump. I've read a few posts where this were the guys exact problems and symptoms and it was ecu..
Do you have inpa ? Anything that can connect to the ecu to see if its functioning correctly? I wouldn't know what to look for exactly but if you can't connect at all to it , it might be a start..
 
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Old 10-25-2022, 05:55 AM
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Originally Posted by R53Orlando
Hey guys, first time posting a question. My 2006 mini R53 just quit with no codes. Was running fine. I am aware that fuel pump and fuel pump relays are a known issue. Mine has about 100k Miles on it. I decided to just replace the fuel filter and fuel pump anyway. Still would not start. I then replace the fuse block as mine has the relay integral to the fuse block. Still will not start.

Any ideas?

thanks
did it die while driving or ???? If so 2x check your inertia switch. Also check footwell wiring. I swear I read a few posts that they had bad wiring down there from leaky seals..
 
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Old 10-25-2022, 05:59 AM
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died while driving with no check engine lights. started up a few times in the next days, but would eventually shut off again. Now will not start at all.
 
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Old 10-25-2022, 06:07 AM
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When you turn the key, does the starter engage? Or nothing? How about just a bad ignition switch?
 
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Old 10-25-2022, 08:43 AM
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I also removed the battery, had it checked and reinstalled with a full charge.
Smart move and the first thing you want to check with these cars, with any issue. Advance token to First Gear and a thumbs up for you sir!
P1692 from Bentley Junior (
Diagnosis without Guesswork Diagnosis without Guesswork
):

Tl;dr:

Throttle body (EDR) check to make sure it's plugged in then perhaps swap for known good one
Crankshaft pulley (very common)










 

Last edited by Daftlad; 10-25-2022 at 08:55 AM.
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