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Old 02-28-2017, 11:49 AM   #1
jgm92085
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Default fuel pump & gauge simultaneously falied?!

hey guys just realized i misspelled failed in title.. how embarrassing! haha

ok i finally have day off again to take a whack a this so heres my current situation, thanks to those who helped me get this far:

recap:
As I was finishing up my job on tsat, fuel injectors, and checking for leaks i jacked down and the car stalled. will not restart, no pressure from valve on fuel rail, the fuel pump not whirring AND the indicator shows E eveen after adding gas.

I am told these two run on different relays/fueses so its odd that both cut out simultaneously. switched wiper relay with pump's and no effect & wipers still work when switched.

Several additional questions:

took out back seat and see the wiring to fuel tank, but wonder how is best way to approach disconnecting as there seems to be little access. maybe access better in trunk?
Do both of these (fuel indicator/pump) share same ground contact (i believe they are by rear lights?)

The fuel gauge worked before service not sure if fuel pump failed i had been noticing a lack of whirring and her autostart (we thought) was flooding the engine, but may have been the fuel pump dying. (not sure?)

i bought new pump assmbly but see the tank removal is difficult, so wonder
if electrical issue could be the culpirt for both of these malfunctions.

always appreciate the helps guys, thanks!

Last edited by jgm92085; 02-28-2017 at 11:52 AM. Reason: minor spelling issues
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Old 03-07-2017, 02:09 PM   #2
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Default Re: fuel pump & gauge simultaneously falied?!

Have you looked at any fuses or just guessed they are good?
Do you have a multimeter to check fuses for continuity, and check wiring for 12v?
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Old 03-07-2017, 03:19 PM   #3
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Default Re: fuel pump & gauge simultaneously falied?!

Quote:
Originally Posted by jgm92085 View Post
......As I was finishing up my job on tsat, fuel injectors, and checking for leaks i jacked down and the car stalled. will not restart, no pressure from valve on fuel rail, the fuel pump not whirring AND the indicator shows E even after adding gas...
Presuming the engine was running when lowering the car with a floor jack, by chance was there any way for wiring and jack to meet? Checked main battery connections including two grounds - chassis and engine block? Try the easy stuff first before jumping into the deep end, fishing for something not there.

Quote:
Originally Posted by jgm92085 View Post
...took out back seat and see the wiring to fuel tank, but wonder how is best way to approach disconnecting as there seems to be little access. maybe access better in trunk? Do both of these (fuel indicator/pump) share same ground contact (i believe they are by rear lights?)

The fuel gauge worked before service not sure if fuel pump failed i had been noticing a lack of whirring and her autostart (we thought) was flooding the engine, but may have been the fuel pump dying. (not sure?)

i bought new pump assmbly but see the tank removal is difficult, so wonder
if electrical issue could be the culpirt for both of these malfunctions....
No access to fuel tank from inside the car, probably a safety issue with an occasional yahoo leaving an access panel off and allowing flora, fauna and exhaust fumes to enter. This also suggests a one time conflagration if rear ended, tank punctures, ignition, fire and flames entering this access hole. Making a cabin intact with rollover safety without crash bars, a la race car, front and side impact air bags, blah blah blah, secures the human(s) belted in their seats from becoming roast pork.......I can wax on but you get the message.

All fuel tanks on Saturns are dropped for access to electrical and plumbing. Reliable electrical connections developed over the years tends to guarantee against failure with tank connections. However, electrical lines to and from fuel tanks may be subject to weathering, corrosion, meddling, routine maintenance (changing bulbs). I haven't looked in my trunk but recall fuel tank ground is in the rear brake wiring where several grounds are tied into a splice pack and connected to a chassis stud. There are several ground splice packs around the car. It would make sense to have the shortest lengths of wiring anywhere so power and ground to the fuel pump and fuel level sensor close by. The bcm receives signals and drives the instrument panel displays.
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Old 03-07-2017, 04:27 PM   #4
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Default Re: fuel pump & gauge simultaneously falied?!

Hasn't this issue been resolved by him in the other thread to this problem?

http://www.saturnfans.com/forums/sho...d.php?t=230155
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Old 03-07-2017, 07:24 PM   #5
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Default Re: fuel pump & gauge simultaneously falied?!

^^ you are correct. Bad fuse.
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