Question about 1994 Dodge Ram

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When i tap bottom of fuel tank fuel pump works then stops

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Replace it, tapping the tank only gets you 1 time if the pump is worn.

Posted on Apr 03, 2015

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Posted on Jan 02, 2017

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1 Answer

Fuel pump works sometimes and when it doesn't I unplug for few mins and it works again??? Anyone know what the issue is


fuel pump going bad replace it it will get to the point where after it cools down or the dead stop completely goes or tapping the fuel tank at the pump area stops working and it wont restart and u will be stuck in the most isolated area the pump the gm oil pressure one is for that if the vehicle oil pressure doesnt get up to at least 20 psi it shuts down the engine to protect it ---when u turn ur key to the on position not start u will here a hum thats ur pump pressuring up ur fuel lines if no hum u have no pump =s no fuel people use to smack under the fuel tank around the middle where the fuel pump is to [shock it ]into working it usually works to get u home or pump to work again and usually u dont get a check engine ligh with fuel pump and with most ignition problems it will code

Jul 11, 2015 | Cars & Trucks

1 Answer

Engine cranks, runs for 1 or 2 seconds and then stops.


Two items to check. The crankshaft sensor will reduce fuel pump pressure if it miscounts the RPM. The plastic strainer in the fuel tank can break apart and clog the pump intake in the tank. When the engine quits, the fuel pump is stopped and the loose particles are returned to the tank bottom.

In either case, try checking the fuel pressure at the test tap on the fuelrail.

Feb 03, 2014 | Ford Crown Victoria Cars & Trucks

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Ring holding fuel pump in tank is corroded / rusty. Can't move it, are the tabs secured with slots OR by turning the ring will the slots move and tabs stay put??


I remove them with a flat punch and a ball pean hammer gently tap on the ring away from the stops and the ring will rotate off

May 12, 2011 | 2001 GMC Jimmy

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Fuel pump stops working causing vehicle to stall.tap on fuel tank with something and it will start again.is this fuel pump,and do i have to drop tank in a 1994 gran cherokee limited 5.2 v8


Yes, certainly sounds like a fuel pump issue, very common issue. Yes, you have to drop the tank for access..... Be safe, fumes are extremely flammable.

Apr 21, 2011 | 2002 Jeep Grand Cherokee

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My 99 tahoe wont turn on changed fuel filter it started first time but now can't start could it be the fuel pump?


The fuel pump is in the tank and not a fun job
So have the pump tested before assuming it is bad

Jan 28, 2011 | Chevrolet Tahoe Cars & Trucks

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The fuel gauge shows 1/4 tank with 115 miles left until empty but the car stopped due to no fuel.


Bring it back to dealer and them recalibrate computer and fuel gauge. Someone missed that in new car prep

Jan 03, 2011 | 2010 Volvo XC60

1 Answer

Stopped running when I put on the gas. Now it will turn over but wont start


Could be low fuel pressure and now no pressure. Fuel pump could be bad. Need to check fuel pressure. We use a trick to test it sometimes .While someone cranks over the engine , with a hammer firmly TAP bottom center of fuel tank, it jars pump and might start,does not fix it but lets you know if it is bad.

Nov 21, 2010 | 2003 Chevrolet Cavalier

1 Answer

88 camaro wont start


Hi
Turn key on a listen for fuel pump running in tank. The fuel pump should run for 3 to 4 seconds and kick out. If not running try tapping bottom of tank with a soft hammer and fuel pump might start working but if this is the problem it will have to be replaced.

Apr 02, 2009 | 1988 Chevrolet Camaro

1 Answer

Fuel sensor


  1. Release fuel system pressure.
  2. Fuel tank must be removed prior to fuel pump service.
  3. Using a hammer and a brass drift, carefully tap the fuel pump lock-ring counter-clockwise to release the fuel pump.
  4. Remove the fuel pump and its O-ring from the fuel tank, and discard the old O-ring.
  5. Cover tank openings to prevent dirt from entering system.


FUEL GAUGE SENDING UNIT REMOVAL

  1. Gently bend the sending unit locking tabs away from the sending unit.
  2. Remove the electrical connector cover (red). Remove the sending unit wires from the electrical connector.
  3. Use one screwdriver to push on the fuel pump body, and use another to release the sending unit locking tab from the sending unit.
  4. Slide the sending unit assembly off of the fuel pump reservoir housing.
  5. Pull the wires through the reservoir body and fuel pump cover plate.


FUEL GAUGE SENDING UNIT INSTALLATION

  1. Bend the sending unit wires and lay them into the slot on the back of the sending unit.
  2. Slide the sending unit into the slots on the fuel pump reservoir body. Slide the wires through the triangle shaped hole in the fuel pump reservoir body. Check that the tab in the fuel sending unit locks into the detent in the fuel pump reservoir body.
  3. Slip the wires onto the tab of the fuel pump reservoir body.
  4. Slide the sending unit wire terminals into the electrical connector. Install the terminal locking cover.
  5. Slide the fuel sending unit electrical connector into the bottom of the fuel pump electrical connector. Check that the connectors are securely attached and fully pushed into each other.
FUEL PUMP INSTALLATION

  1. Wipe seal area of tank clean, and install a new O-ring seal on pump.
  2. Position fuel pump module in tank and secure with the lock-ring.
  3. Using a hammer and a brass drift, carefully tap the fuel pump lock-ring clockwise to lock the module in place. NOTE: Do not overtighten the lock-ring, because the fuel pump seal could split and leak.
  4. Install fuel tank assembly. NOTE: ASD and fuel pump relays remain energized for 7 minutes during the following test, unless the test is stopped or the ignition switch is turned to the OFF position.
  5. Using scan tool, place ignition switch in "RUN" position and use Actuate Output Test "Auto Shutdown (ASD) Relay", to activate fuel pump and pressurize system.
  6. Check for leaks.

Nov 07, 2008 | 1999 Dodge Caravan

1 Answer

Fuel sender unit


hello first thing get a flat block of wood 2x6 or 2x12and a floor jack get car ramps under the rear tires use jack stands for safety get the jack under your tank with a piece of wood snug dont crush the tank remove your straps that support the tank also the clamp at your filling tube work the tank down while letting the jack down better off with a helper much easier now at the top[ of the tank you need to remove fuel lines (make sure there is no pressure release at the fuel rail from your shrader valve) emmision lines, wires now take your tank out its easier to pour the gas out of the tank into pails its more managerable to work on at the top there is a lock ring it has flat spots that lock under 3 or 4 ears you want to tap the ring off so the small stops are going away from the ear use a copper or brass flat edged chisel or punch spray some wd40 on ring to help once the ring is removed your sending unit fuel pump assembly lifts straight up dont bend the float arm take it out on a angle that works now once you go to reassemble get your area clean where the rubber gasket sits on dont drop dirt or rust in your tank take some blue grease or lithium grease on the rubber so ithelps with the friction now insert unit back in tank install lock ring push down and get it started under the flat ears make sure all the sides are under now tap it to the locking position till it bottoms out on the stops reinstall all lines hoses jack back up install your straps take jack out leave on ramps have somone put the key to on position check for leaks and fuel pump sound if okay then drop down goodluck please rate

Oct 02, 2008 | 2004 Volvo S40

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