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Username Post: Gas guage issues        (Topic#236519)
1965C-10 
Very Senior Member
Posts: 7265
1965C-10
Age: 41
Loc: San Tan Valley AZ "Phoeni...
Reg: 11-18-01
02-26-10 03:18 PM - Post#1870000    

In town the gas gauge works fine, but on a road trips (I've driven to Texas 3 round trips since November in the Corvette) the gauge has issues.

After so much driving from taking off with a full tank, usually around 1/2 tank, you hear the ding and see low fuel level written in the readout, with the gauge at empty.(I press the reset button so I can look at other gauges on the readout such as coolant temp)

For this car, I found turning it off and restarting does not clear it up, only refueling makes the gauge work again.

I have read using Chevron with Techron will keep this from happening, and ran nothing but that stuff, and it still does it!

The last trip it did something different that left me stranded, I ran out of gas but did not know it, because the gauge showed 1/2 tank.

Going down I-40 east just outside Winslow Az (just like the Eagles song ) the car started sputtering and died, and I pulled off at a exit rolling in neutral.

Tried to start it, nothing, did'nt hear the hum of the fuel pump I usually listen for, so I thought, great the fuel pump went out.

Got a tow truck and was being towed into Joseph City to some auto repair shop that my car insurance free towing showed as the only/closest repair shop in that town.

I was in-between Winslow and Joseph City, Joseph City was closer(believe me, it's no city! Tiny little town)

I started doing the math and thought maybe the car was out of gas, filled up in Queen Creek, then drove to Buckeye 82 miles (Queen Creek is far southeast of the Phoenix hub,Buckeye is about 20-30 miles west of Phoenix off I-10), to pick up my brother (spent the night over there to leave early the next morning to go see our brother in Texas who was in intensive care from a accident)

Leaving Buckeye Az that morning, I reset the trip odometer, sitting waiting for the tow truck I looked at the trip, 239 miles, plus about 82, 321 miles since a fill up!

But what about the fuel pump not humming, maybe I burned it up running it empty.

I asked the tow truck driver to stop by the gas station, and while the car was up on the flatbed tow truck, I put in 3 gallons (just enough to see if it would cool the fuel pump down if it was hot, and to fire the car, if not, I knew filling the tank was gonna make the task of dropping the tank to get the fuel pump harder)

I cranked the engine for a couple of seconds, nothing, just for the heck of it, I tried 2 more times and the LS1 fired up!

That was a damn good feeling, and I could care less about being a fool who ran out of gas.

Filled it up the rest of the way, and stayed in the car as the driver tilted the flat bed back (made it easier for him because I held the brake and he put the cable spool in neutral and them I slowly let the car roll back down, vs him running the motor on the spool and slowly letting the car down)

The rest of the trip I kept resetting the trip odometer each fill up, 300 miles was my safety number for getting gas.

Of course the rest of the trip it did the usual going to empty and telling me "low fuel" going to Texas, and back.







 




1965C-10 
Very Senior Member
Posts: 7265
1965C-10
Age: 41
Loc: San Tan Valley AZ "Phoeni...
Reg: 11-18-01
02-26-10 03:45 PM - Post#1870008    
    In response to 1965C-10

http://maps.google.com/maps?q=winslow+az& ;ie=UT...

Where that big rig is parked, is about where the Corvette was after coasting off I-40 in neutral, you can use the arrows to look around to see how there is not much around.

I'm going to tell you something foolish/embarrassing!

Normally I do not use cell phones, but when I go on trips I buy prepaid minutes, they expire one month after purchase.

This time I did not get them because the trip was not planned (brother in accident and at hospital)

So, I did not have a cellphone, or did my brother, I ended up getting lucky and walked about 1/2 mile to "Jack Rabbit Trading Post" to look for a pay phone.

They did not have one, but the lady there let me use her phone, as long as it was a toll free, I read the toll free # off my insurance card as she dialed it, that's how I got tow service!

It could have been ugly, because there are many areas out there that there is nothing for 50, 100, maybe 150 miles.

From now on, I will ALWAYS have a cell phone when travelling anywhere that puts you in remote areas where there is nothing for miles.



 
Sting Ray 
"14th Year" Silver Supporting Member
Posts: 2898
Sting Ray
Loc: Drag City, California
Reg: 02-19-05
02-26-10 09:27 PM - Post#1870186    
    In response to 1965C-10

What brand gasoline do you use?

Bleeds Chevy Orange

1957 Chevy 150, 3-spd
1964 Corvette two top convert, 4-spd
1965 Pontiac GTO hrdtp, tri-power, 4-spd, 4.11's
1967 El Camino, 427, 4-spd
2009 Corvette coupe, triple black, 436 hp, 6-spd


 
1965C-10 
Very Senior Member
Posts: 7265
1965C-10
Age: 41
Loc: San Tan Valley AZ "Phoeni...
Reg: 11-18-01
02-26-10 10:13 PM - Post#1870207    
    In response to Sting Ray

Chevron usually, sometimes QT (Quick Trip) they claim it is Top Tier fuel.



 
toms94 
Member
Posts: 85
toms94
Loc: Kansas
Reg: 10-27-04
03-04-10 02:10 PM - Post#1873826    
    In response to 1965C-10

Mine did this the very day I bought it...driving home 500 miles. Well I kept plenty of gas in. When I got home I filled the tank and poured in a can of SEAFOAM. I let it sit for a week, I've not had an issue with it since (nearly a year). The fuels today have high content of sulfur and this leaves deposits on the contacts of the fuel gauge in the tank and causes this problem. Clean them off and the problem is solved...at least for a while.

2001 Corvette Mag Red Coupe Corsa/Haltech Custom MidAmerica Motorworks Mag Red/Light Oak Seat covers.
2009 Silverado 1500 LTZ Crew Cab Z-71 Volant CAI

[IMG]http://img.photobucket.com/albums/v281/toms94/Co rvette/2010/Cruisefest201 0101-1.jpg[/IMG]


 
1965C-10 
Very Senior Member
Posts: 7265
1965C-10
Age: 41
Loc: San Tan Valley AZ "Phoeni...
Reg: 11-18-01
03-05-10 11:06 AM - Post#1874315    
    In response to toms94

Hmm, I've heard of Seafoam, maybe I should try it out!

Is there more than one Seafoam, like for gas, one for engine crankcase, etc?



 
wagonmaster 
Senior Member
Posts: 8910
wagonmaster
Age: 70
Loc: Loganville, Ga.
Reg: 04-28-00
03-06-10 06:32 AM - Post#1874776    
    In response to 1965C-10

DOESN'T GET ANY BETTER THAN CHEVRON.....lET US KNOW IF THE SEAFOAM WORKED...

Hey T @!


In Memory of Mike McVeigh- The "Mad Spring Wacker" He roams the Forums of CT forever in our hearts and minds!

http://www.picturetrail.com/wagonmaster55

Joe


 
1965C-10 
Very Senior Member
Posts: 7265
1965C-10
Age: 41
Loc: San Tan Valley AZ "Phoeni...
Reg: 11-18-01
03-06-10 01:29 PM - Post#1874966    
    In response to wagonmaster

It only does it on long road trips, running for at least 2 hours, never does it on shorter trips than that.

I've read these cars have 2 tanks, and as the level drops in one, the other tank uses a venturi pump to "level" both tanks.

There is a sender unit in each tank, and the ECM calculates the reading between the 2 to figure out your fuel level.

Is it just me, or does that seem like over-engineering?



 
1965C-10 
Very Senior Member
Posts: 7265
1965C-10
Age: 41
Loc: San Tan Valley AZ "Phoeni...
Reg: 11-18-01
03-06-10 03:18 PM - Post#1875026    
    In response to 1965C-10

I kept searching and found a thread on another Corvette site.

Apparently the design is the right tank's fuel is used first, when it is empty, your guage should be 1/2 full.

It uses the fuel pump from the left (driver's side) tank that continues to run when the key is on and engine running, to make a siphon in the right tank.

There is a Y, one goes to the engine, the other goes to the passenger tank and siphons fuel from the passenger tank (via the jet pump) to the driver's tank.

If a car sits for a while, there is a tiny orifice in the "jet pump" that can get clogged up, keeping the fuel from the passenger tank from transferring to the driver tank, causing spastic fuel gauges, or empty guages.

This site tells how to DIY and clean out the blocked orifice, fixing the problem.

I'm not sure if this is my problem or not, I will try techron or seafoam a few times first.

If that does not do it, this is the next step.

Here is the link, I found it interesting to read how the fuel system in these cars work.

http://forums.corvetteforum.com/c5-tech/1758904-ra...



 
toms94 
Member
Posts: 85
toms94
Loc: Kansas
Reg: 10-27-04
03-07-10 08:33 PM - Post#1875905    
    In response to 1965C-10

No there's just the one Seafoam as far as I know. You can put it in the crankcase, the fuel tank or directly in the engine through the power brake vac hose. I've used it all three ways (not all on the Vette though) Around here you can buy Seafoam at WalMart.

2001 Corvette Mag Red Coupe Corsa/Haltech Custom MidAmerica Motorworks Mag Red/Light Oak Seat covers.
2009 Silverado 1500 LTZ Crew Cab Z-71 Volant CAI

[IMG]http://img.photobucket.com/albums/v281/toms94/Co rvette/2010/Cruisefest201 0101-1.jpg[/IMG]


 
o2bnkc 
Forum Newbie
Posts: 16

Loc: Carson City, Nv.
Reg: 03-29-13
03-30-13 12:49 AM - Post#2330927    
    In response to toms94

Yep, use some Seafoam or Techron additive. Sometimes it may take a few tankfulls for the problem to clear up.

A Proud Navy Vet


 




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