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  #37  
Old 01-13-2015, 01:31 PM
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Re: How low (fuel tank) have you dared to go?

Has anyone asked Jackson Browne his opinion on this?

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  #38  
Old 01-13-2015, 01:49 PM
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Re: How low (fuel tank) have you dared to go?

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Originally Posted by perpster View Post
Has anyone asked Jackson Browne his opinion on this?
Thanks for the ear-worm, perpster...
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  #39  
Old 01-13-2015, 03:47 PM
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Re: How low (fuel tank) have you dared to go?

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Originally Posted by Daniel454 View Post
Well, my name is Daniel, nice to meet you...

Seriously though, its been a long time, completely different vehicle (completely different brand) but yes, I once had an overheating fuel pump caused by low fuel...

2000 Grand Am GT just for the record.

I had little money at the time and was VERY bad about driving it down to fumes every single tank.

Had about 30K on it. Had been on the road about 20 minutes, tank was (as usual) below 1/8th... Car died. Acted like I ran out of gas. Thought maybe the fuel gauge was stuck, walked to a gas station a couple miles up the road, bought a gas can and 2 gallons of fuel, returned to pour my 2 gallons in and it fired right up.

Drove to the gas station, filled up and went home.

A week later, it did it again (but with slightly more fuel showing on the gauge). This time I was nowhere near a gas station. I sat waiting on a ride to show up. About 45 mins passed, decided to try it. Sure enough, fired right up. Again, drove 20 minutes, died again.

Bottom line, turned out the fuel pump was overheating. As long as I kept 1/4 tank or more in it, no problems at all, for more than a year and 20K + miles!

Now with all of that said, obviously the pump was bad. I cant say for sure me running it low made it go bad. It could have just been a bad pump.

But I can say for sure that in this case, too low of fuel did make the pump run hotter and eventually overheat so at least with a GM 15 years ago, I do believe there is SOME merit in the pump being cooled by standing fuel...

Final thoughts- At the time I was told by multiple mechanics that my actions of running it low IS what caused it, but I maintained that if that was the case, that was horrible and stupid engineering. It should be built to withstand the practice of filling up rarely..

VERY good chance they ARE built for that today so really, I wouldn't (and don't) worry TOO much about it, though I rarely let it get below 1/8 tank since then.
How do you know the fuel pump was over heating? Those vehicles almost without fail even new had faulty fuel gauges.
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  #40  
Old 01-13-2015, 03:59 PM
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Re: How low (fuel tank) have you dared to go?

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Originally Posted by chwoner View Post
How do you know the fuel pump was over heating? Those vehicles almost without fail even new had faulty fuel gauges.
I was trying to take a post that was far too long and slim it down without all the details. Sorry if I left out too much.

What I was trying to explain was that if I dropped to 1/8 tank or less, the pump would turn off. Acting like it was out of gas.

But, and here is the key, I could stop, let it cool off (45 ish minutes) and then drive it again for 20 more minutes without adding a single drop of fuel.

The last time I let it happen I did this twice without any additional fuel.

My first example in above where I went and got 2 gallons of fuel, the reason it worked when i got back was both because it had cooled off AND now it had enough fuel to cover the pump.

For the next year I simply did not let it get below 1/4 of a tank, no more problems.

Finally, At the end of that year, i dropped the tank and replaced the fuel pump. Problem solved, could run it down below 1/8, no more issues. Granted I only did that a couple times to test it, I was scared of damaging the new pump so I didn't make that a regular thing.

But I can say without a doubt, the old pump was bad, the fuel gauage was fine. What i don't know is if running it low CAUSED the bad pump or not, but once it started overheating, dropping below 1/8 it would die, keeping 1/4 tank of gas in the tank kept it running for 20K miles.
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  #41  
Old 01-13-2015, 04:34 PM
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Re: How low (fuel tank) have you dared to go?

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Originally Posted by cherryredjeep View Post
When my low fuel comes on,the amount of miles too go will vanish.

I think its around 30 miles too go but i'm not sure! Has anyone noted when your low fuel comes on how many m-t-g were left.Not that i trust it.
The 2015 KL cherokee I drove yesterday was showing 15 miles remaining when we returned from test drive.
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  #42  
Old 01-13-2015, 06:56 PM
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Re: How low (fuel tank) have you dared to go?

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Originally Posted by chwoner View Post
exactly my point
The only point that you consistently make is your unwarranted negativity towards others and your inability to deal with opinions and experiences that differ from your own.
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  #43  
Old 01-13-2015, 08:08 PM
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Re: How low (fuel tank) have you dared to go?

First GM in tank fuel pump I had was in a 78 Sunbird I bought new (also had a SBC and a Muncie but that is another story). Replaced the fuel pump at about 100k miles.

Since then have replaced A Lot of GM fuel pumps mostly on cars with over 100k miles. Got so I would keep spares around. Part of the reason I have a lift.

Did learn that cheap fuel pumps are...cheap and always buy a quality one. Dropping a tank takes a while, particularly one with five hoses.

Don't have enough experience with Mopars yet to know if similar.

Do tend to fillup at between 1/2 and 1/4 just in case I suddenly need to go a couple of hundred miles on short notice (and gas on Florida's Turnpike runs A Bunch more than when at Sam's). Also south Florida usually runs about 20c/gal more than Orlando even at El Cheapos.

Pretty sure I saw a DTE of 22 miles once coming home late so stopped at Hess.

ps with at least 9% Ethanol in the gas (over 2 gal in 26), I wouldn't worry about gas lines freezing.
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  #44  
Old 01-13-2015, 08:13 PM
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Re: How low (fuel tank) have you dared to go?

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Originally Posted by padgett View Post
with at least 9% Ethanol in the gas (over 2 gal in 26), I wouldn't worry about gas lines freezing.
Yes, that's true to a certain extent. But old habits die hard and I just don't like the idea of pulling fuel from the bottom of a tank when there's really no reason to be doing so.

Edited to add: http://www.ldgautomotive.com/gas%20line%20drier.html

Interesting read.
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