E70 X5 Keep getting P0442 Small Evapor Leak - Page 6

ard · #51 03-30-2015, 05:53 PM

Quote:

Originally Posted by X5Cat

Seemed to think its occurrence is actually forecasting a fuel pump failure (starting to draw too much current).

Welp. When you coast to a stop next time after the engine stalls, you'll know where to look first!

Sponsored Links

X5Cat · #52 03-31-2015, 10:26 AM

Hey, this is the fuel pump under the right (passenger) side of the rear seat. Can anyone tell me what it is that's under the left side? There is another metal cover plate there. I pulled back the rubber boot in the center of that one but didn't smell fuel like I did on the right side. I hope it doesn't have two main fuel pumps!

Skyline · #53 03-31-2015, 12:16 PM

My original comment here suggested a careful cleaning of the contacts, followed by some dialectic grease. HOWEVER if your connector looks as bad as X5cat's, (the posted photos), you need to replace everything, fuel pump and connector. This is a massive fire/explosion risk for your vehicle, and could kill you. Not something to mess around with and do a Band-Aid fix.

Also, if you decide to do this repair yourself, do it in a very well ventilated area and keep a B/C fire extinguisher close at hand. Absolutely disconnect the battery. Within one mile of my house, there are two gas stations that burned completely to the ground, both while attempting in-tank fuel pump repairs. While replacing a fuel pump is not the trickiest job you could DIY, and I've done several, it might be something to bring to the dealer or your favorite Indy. If it goes wrong, it can burn your car AND house to the ground....better it happens on someone else's watch.

X5Cat · #54 03-31-2015, 05:56 PM

Disclaimer and sage advice noted, Skyline! Yes, that's why I have ordered new fuel pump AND connector, and even installing new fuel filter as a bonus.

gregg3gs · #55 03-31-2015, 07:55 PM

Quote:

Originally Posted by X5Cat

Hey, this is the fuel pump under the right (passenger) side of the rear seat. Can anyone tell me what it is that's under the left side? There is another metal cover plate there. I pulled back the rubber boot in the center of that one but didn't smell fuel like I did on the right side. I hope it doesn't have two main fuel pumps!

Sure.

The fuel pump is located on passenger side under the seat.
The pump located uner the same seat on the driver side is a "hump pump". Its job is to move fuel from driver side of the fuel tank once fuel level gets to be low. This is because the fuel tank had a hump in the middle (for the drive axle).

Hope this answers the question.

imalabil · #56 03-31-2015, 08:36 PM

I spent way too much of my day listening to the idiot at the used car dealer where I bought my E70 about how BMW codes were just too much for them. This was AFTER showing them the top of my fuel pump and the RAW GAS on top of it. After some discussion about driving a bomb and their liability they are taking it to the dealer since "it has a recall on it".

Told them I don't really care, they need to fix my car per the extended warranty I paid for it.

I wouldn't have believed anyone could be so clueless unless it happened to me, which it just did.

I'm expecting the dealer to replace the pump and connector: I don't think they repair burned-out pins, they replace.

ard · #57 03-31-2015, 09:40 PM

Quote:

Originally Posted by imalabil

I spent way too much of my day .... at the used car dealer where I bought my E70 .....

they need to fix my car per the extended warranty I paid for it.
.

Why wouldnt you just go to the BMW dealer in the first place?

X5Cat · #58 04-01-2015, 02:55 AM

Quote:

Originally Posted by gregg3gs

The pump located uner the same seat on the driver side is a "hump pump". Its job is to move fuel from driver side of the fuel tank once fuel level gets to be low. This is because the fuel tank had a hump in the middle (for the drive axle).

Thanks for enlightening me. Hopefully, that pump sees less action than the main, and is not nearly as worn (or its wiring burned).

X5Cat · #59 04-01-2015, 02:58 AM

Quote:

Originally Posted by imalabil

...they are taking it to the dealer since "it has a recall on it".

A recall? For real? Or were they just saying that to save face with you?

ard · #60 04-01-2015, 12:10 PM

FYI-

The transfer or siphon pump will show a speciifc failure mode: you will 'run out of gas' with apprx 1/4 to 1/2 a tank of gas showing. The car will run fine until the fuel level drops low enough that the fuel level doesnt naturally spill over the 'hump'. The one 'side' of the tank drops belw the saddle and the side with the main pump will run dry. in earlier cars you could display the fuel levels in L, R and combined. Just looking at these will tell you when the siphon pump dies or is dying.

Sponsored Links