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HOW DOES ONE REPLACE RHE FUEL LEVEL SENDING UNIT ON A 74 CHEVY PICKUP

THE FUEL LEVEL GAUGE READS HALF FULL WHEN EMPTY

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  • Aurelio Valtierra
    Aurelio Valtierra Dec 02, 2012

    It is 1974 chevy pick up No cmputers

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  • Cars & Trucks Master
  • 14,363 Answers

What size engine do you have?

Posted on Nov 30, 2012

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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  • 625 Answers

SOURCE: fuel level gauge

some of this vehicles have a computer system, that will allow you to diagnose the fuel gage with an aftermarket sacan tool,
than most of auto repairs have, but i will recomend you to check also the conector by the fuel pump and make sure there is not any corosion or melting circuit inside the conector,

what the scan tool does is triger your gage and that way you will know if you have a bad gage.

Posted on May 28, 2008

emissionwiz
  • 76118 Answers

SOURCE: fuel sending unit in a 2000 chevy s-10 pickup

You must replace the sending unit in the gas tank to correct this problem, or do you already know this?

Posted on Nov 07, 2008

bitchn65cuda
  • 70 Answers

SOURCE: when car idles gas gauge goes down to empty

Your code is PO462.  Isuzus made 99-01 with bad fuel level sensors as well as bad fuel pumps located inside your gas tank. You can just replace the sensor but i advice you to replace the whole "fuel pump assembly" to prevent another problem. At a shop this is a costly job they will charge 500$. But if you have faith you can do it your self..it is fairly easy to replace if you have a friend to help even better. but will need to erase the code before or after doing the job to prevent the same symptoms. Buy a "Fuel pump Assembly kit" with and  a gasket (around190$).Remember always  do a job carefully to prevent braking anything.  Raise your car, locate your gas tank unbolt the 4 bolts holding it, disconnect any sensors, there should be 2 other bolts holding the tank once down, you can see the assembly with hoses disconnect too. and pull the assembly out it715c7ea.jpgwill be tight, now  replace with new gasket and assembly kit press down firmly till it locks in. now connect everything the way you took out. Its actually easy...here is a pic of the whole assembly kit.....GOOD LUCK

Posted on Apr 29, 2009

  • 497 Answers

SOURCE: 2002 Chevy Suburban: Fuel gauge reads empty, tank is half full

Youre gauge is controlled by a plunger in the fuel tank which is attached to the sensor and the fuel gauge. it sounds like when the plunger goes down half way its either getting stuck down lower then it should. Needs replacing. Any mechanic can do this install for you.

Posted on Aug 27, 2009

  • 1810 Answers

SOURCE: 1993 F150 front tank gauge reads empty, sending unit bad maybe?

chilton ar harnes make a great bible for cases like theise chapters indago sell em cheep

Posted on Jan 03, 2010

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The fuel level sending unit inside the fuel tank is bad or the gauge is or there is a wiring problem This video is for a mercury vehicle , but all makes an models are the same . Repairing Fuel Gauge Problems 2004 Mercury Marquis EricTheCarGuy

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Put in new fuel pump and sending unit. but my gas gauge doesnt always work. sometimes is does and sometimes it doesnt


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How many wires are running from the float from gas tank, I only see one . my fuel Gage reads empty but when I unplug the wire it reads full then when I plug it in it reads empty again what do I look for


I think by what you have decribed is the gauge in the dash itself is bad. When the wire is unpluged the gauge should read empty. I assume that this is an older Chevy with a mechanical fuel pump being there is only one wire. You can also check to see if the sending unit in the tank is operating properly but reading the ohmn's thru the wire.

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My 2000 Chevy Impala fuel gauge reads empty.


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My fuel gauge on my 1993 moterhome with454 chevy engine reads half full when it is empty


You have to drop the tank, on your fuel sending unit if the "float" that tells the gauge how full your tank it. These like to get holes, or jam up. So it is only going up half way, and your gauge only reads half full. So it could have a hole, it could be sticking, or a variety of things. Before you go doing all that, I'd check the ground wire off your unit, since it is working doesn't sound like a ground issue, but they can be tricky. Good luck.

Feb 23, 2009 | 1987 Chevrolet R10

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Fuel gauge not working all the time.


This is a normal concern.
The instrument cluster uses 4 different operating modes to calculate the fuel level:
Anti-slosh (default mode)
Key OFF fueling
Key ON fueling
Recovery
After a fuel fill up, the time for the fuel gauge to move from empty (E) to full (F) ranges from 2 seconds to 55 minutes depending on which operating mode the fuel gauge is in.
The default fuel gauge mode is called the anti-slosh mode. To prevent fuel gauge changes from fuel slosh (gauge instability due to changes in fuel sender readings caused by fuel moving around in the tank), the fuel gauge takes approximately 55 minutes to go from empty (E) to full (F).
The key OFF fueling mode (2 seconds to read empty [E] to full [F]) requires 3 conditions be met:
The key must be in the OFF position throughout the entire refueling of the vehicle.
At least 15% of the vehicle's fuel capacity must be added to the fuel tank.
The instrument cluster must receive a valid key ON fuel sender reading within 1 second of the key being put into the RUN position. The key ON sample readings are considered valid if the fuel sender reading is between 15 ohms ± 2 ohms and 160 ohms ± 4 ohms.
If these conditions are not met, the fuel gauge stays in the anti-slosh mode, which results in a slow to read full (F) event.
The key ON fueling mode (approximately 90 seconds to read empty [E] to full [F]) requires 3 conditions be met:
The transmission is in PARK (P).
The key is in the RUN position.
At least 15% of the vehicle's fuel capacity must be added to the fuel tank.
In key ON fueling mode, a 30-second timer activates after the transmission is put into the PARK (P) position (automatic transmissions). When the 30-second time has elapsed and at least 15% of the vehicle's fuel capacity has been added, the fuel gauge response time is 90 seconds to read from empty (E) to full (F). When the transmission is shifted out of PARK (P), the fuel gauge strategy reverts to the anti-slosh mode. The key on refueling mode prevents slow to read full events from happening if the customer refuels the vehicle with the key in the RUN position.
Recovery mode is incorporated into the instrument cluster strategy to recover from a missing fuel level input during a refueling event. Missing fuel level inputs result from intermittent opens in the fuel sender or its circuits. Recovery mode (empty [E] to full [F] approximately 20 minutes) is initiated when the following 2 conditions are met:
The instrument cluster is in the anti-slosh (default) mode.
The actual fuel level in the tank is greater than what is being displayed by the fuel gauge

Feb 18, 2009 | 1983 Mercury Grand Marquis

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