2003 Escalade fuel system woes
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Cadillac Escalade, EXT and ESV Forum - 1999 - 2006 Discussion, 2003 Escalade fuel system woes in Cadillac Escalade Forums; Here's my situation: 1. I filled-up the Escalade. That's 26 gallons of fuel. 2. I drove the thing 209 miles ...
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    Airdorn's Avatar
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    2003 Escalade fuel system woes

    Here's my situation:

    1. I filled-up the Escalade. That's 26 gallons of fuel.

    2. I drove the thing 209 miles on straight and level Interstate 40 (between Little Rock, AR and Memphis, TN)

    3. Without warning the engine lost power. DTC came up indicating "bank 1 too lean, bank 2 too lean". Obviously, that meant there was no fuel getting to the engine.

    4. The fuel gauge read just under 1/2 tank. After turning off/on several times, it read the same thing.

    5. Turning the key ON, I could hear a brief whine from the area of the fuel tank. Pretty sure it was the fuel pump not getting gas.

    6. If I let it sit for a few mins, the truck would start up, but after about a minute, I would hear that whine again from the area of the gas tank and the engine would sputter and die.

    7. I had AAA deliver 3 gallons of gas. I then was able to drive the Escalade as normal to a gas station a few miles away and fill it up. I then drove it home with no further issues, which was an additional 86 miles.


    I filled it up, and this happened after 209 miles. When I gassed-up, it took about 13 gallons. Add the 3 gallons AAA sold me, that makes 16 gallons. That means I had 10 gallons still in the tank; the fuel gauge was accurate.

    This has happened a couple of times before; loss of power but no further problems after gassing-up.

    Does anyone have any ideas about what's going on? There's several gallons still in the tank yet the engine isn't getting the fuel. Other times, I can run the thing down to near E with no problem. Yes, I know it's not a good idea to run it very low or dry.

    I don't know how the fuel pump is arranged to receive the fuel, but it's almost as if it siphons from the top and it's not reaching down to the bottom of the tank.

    Thanks!

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    the cadillac man's Avatar
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    Quote Originally Posted by Airdorn
    Here's my situation:

    1. I filled-up the Escalade. That's 26 gallons of fuel.

    2. I drove the thing 209 miles on straight and level Interstate 40 (between Little Rock, AR and Memphis, TN)

    3. Without warning the engine lost power. DTC came up indicating "bank 1 too lean, bank 2 too lean". Obviously, that meant there was no fuel getting to the engine.

    4. The fuel gauge read just under 1/2 tank. After turning off/on several times, it read the same thing.

    5. Turning the key ON, I could hear a brief whine from the area of the fuel tank. Pretty sure it was the fuel pump not getting gas.

    6. If I let it sit for a few mins, the truck would start up, but after about a minute, I would hear that whine again from the area of the gas tank and the engine would sputter and die.

    7. I had AAA deliver 3 gallons of gas. I then was able to drive the Escalade as normal to a gas station a few miles away and fill it up. I then drove it home with no further issues, which was an additional 86 miles.

    I filled it up, and this happened after 209 miles. When I gassed-up, it took about 13 gallons. Add the 3 gallons AAA sold me, that makes 16 gallons. That means I had 10 gallons still in the tank; the fuel gauge was accurate.

    This has happened a couple of times before; loss of power but no further problems after gassing-up.

    Does anyone have any ideas about what's going on? There's several gallons still in the tank yet the engine isn't getting the fuel. Other times, I can run the thing down to near E with no problem. Yes, I know it's not a good idea to run it very low or dry.

    I don't know how the fuel pump is arranged to receive the fuel, but it's almost as if it siphons from the top and it's not reaching down to the bottom of the tank.

    Thanks!
    Sounds like the fuel pump is on its last legs mine did like this before it failed

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    Airdorn's Avatar
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    Re: 2003 Escalade fuel system woes

    Could you be more specific? It's an expensive part and it's hard to replace, so I wanna be sure.

    The fuel pump seems to work fine. When a fuel pump is "going out", does it really work fine most of the time and then just stop working and act all weird sometimes, and then work perfect again when the tank is 100% full?

    That doesn't make a lot of sense.

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    the cadillac man's Avatar
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    Quote Originally Posted by Airdorn
    Could you be more specific? It's an expensive part and it's hard to replace, so I wanna be sure.

    The fuel pump seems to work fine. When a fuel pump is "going out", does it really work fine most of the time and then just stop working and act all weird sometimes, and then work perfect again when the tank is 100% full?

    That doesn't make a lot of sense.
    Well if you want you can get the fuel system pressure tested(this would tell us for sure if the pump is the culprit or not)

    But mine did act crazy before it failed(and worked fine for a brief period before finely quitting all together) leaving me at the side of the road(and it was a hot day and my truck is black not a good combo(it got toasty quick)

    Mine made a whining noise for a while before it failed(my new pump is barely audible unless you are right next to the tank)

    FYI running the truck all the way to empty is asking for a quick death for the fuel pump

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    Re: 2003 Escalade fuel system woes

    Mine is baely audible now, too...

    It's as if the pump is mounted on the top of the tank, and it's for whatever reason not reaching all the way into the tank to siphon all the gas out. But other times, it seems to drink the gas all the way to empty.

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    the cadillac man's Avatar
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    Quote Originally Posted by Airdorn
    Mine is baely audible now, too...

    It's as if the pump is mounted on the top of the tank, and it's for whatever reason not reaching all the way into the tank to siphon all the gas out. But other times, it seems to drink the gas all the way to empty.
    If it sounds like it gurgling then its dead(that's how mine did when it failed)and yes the pump is mounted at the top of the tank but does reach down to the bottom of the tank in order to keep cool

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    Re: 2003 Escalade fuel system woes

    No, it was a fairly high-pitched whine, what you'd expect from a pump that normally moves fluid but isn't getting any.

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    the cadillac man's Avatar
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    Quote Originally Posted by Airdorn
    No, it was a fairly high-pitched whine, what you'd expect from a pump that normally moves fluid but isn't getting any.
    That high pitched whine means the pump is worn(mine is whisper quiet) but my old pump whined loudly before it failed

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    hotrodln is offline Cadillac Owners Fanatic
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    Re: 2003 Escalade fuel system woes

    I just changed my fuel pump today. these are complicated pump setups- like none i've ever seen. it looks like there are two small pumps in the assembly. they also have internal hoses that need to be hooked up when you put the pump inside the tank. i think they draw gas from the far coners of the tank. so you might hear a pump running and still not get gas. if you car isnt' rusty, this isn't a bad job to do at home. get a new pump from rock auto. mine was 215 bucks....
    http://s684.beta.photobucket.com/use...99444883654081

    http://s684.beta.photobucket.com/use...53414698454536

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    Quote Originally Posted by hotrodln
    I just changed my fuel pump today. these are complicated pump setups- like none i've ever seen. it looks like there are two small pumps in the assembly. they also have internal hoses that need to be hooked up when you put the pump inside the tank. i think they draw gas from the far coners of the tank. so you might hear a pump running and still not get gas. if you car isnt' rusty, this isn't a bad job to do at home. get a new pump from rock auto. mine was 215 bucks....
    http://s684.beta.photobucket.com/use...99444883654081

    http://s684.beta.photobucket.com/use...53414698454536
    I knew it had to be the pump though mine was changed as a assembly (mainly as I would like to prevent something else from failing but I only seen one hose in the pump but one is the pickup hose the other is a return hose

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    Re: 2003 Escalade fuel system woes

    in side the tank there were two hoses that i had to disconnect to get the pump out. i suppose one is the return...the other? i'll have to look closer to see what's up with the old pump before i throw it out. I tried to see where the hoses were going inside the the tank, but they were ong and just dissapeared into the darkness!

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    Quote Originally Posted by hotrodln
    in side the tank there were two hoses that i had to disconnect to get the pump out. i suppose one is the return...the other? i'll have to look closer to see what's up with the old pump before i throw it out. I tried to see where the hoses were going inside the the tank, but they were ong and just dissapeared into the darkness!
    Uh that's odd I only seen one on the fuel pump so idk if gm changed the design or what

    (My mom has a 02 and me and my dad recently had to have it serviced because of a strong fuel smell it ended up being the pressure sensor on the top of the pump but they did pull the pump and I only seen one hose)

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    Re: 2003 Escalade fuel system woes

    yeah take a look at the fuel pump pictures i posted. there are two shiney pipes sticking down below the top of the fuel pump. one was fatter than the other, but they both had hoses to hook up to them

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    Quote Originally Posted by hotrodln
    yeah take a look at the fuel pump pictures i posted. there are two shiney pipes sticking down below the top of the fuel pump. one was fatter than the other, but they both had hoses to hook up to them
    I meant when I had mine replaced(maybe I didn't see the second hose)I do know that on is the pickup hose(possibly the larger hose) and the return hose

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    Re: 2003 Escalade fuel system woes

    I just wanna know why my engine was starved of gas, even though I had just under 1/2 tank. After topping it off, it drove fine and has ever since. This event happened early yesterday.

    Do fuel pumps that are "going bad" really work intermittently?

    It seems more like some pickup hose isn't reaching down into the tank just right.

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