Question about 1993 Cadillac Eldorado

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HOW TO CHANGE FUEL PUMP IN 1993 CADILAC ELDORADO

CAR DOE'S NOT HOLD PRESSURE OVERNIGHT IN FUEL LINE

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  • Cadillac Master
  • 5,370 Answers

To replace fuel pump,the assembly has to be removed out,also its advisable to replace fuel filter while replacing fuel pump,if it as not replaced before.

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I suggest you few helpful links with proper step by step procedure to get your fuel pump and its related parts inspected/ serviced and replaced:--------

How to relieve fuel pressure?

http://technoanswers.blogspot.com/2012/01/how-to-relieve-fuel-pressure.html

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Refueling problem?

http://repairhelpcenter.blogspot.com/2012/01/refueling-problem.html

-------

Toyota Tercel consuming more fuel?

http://repairhelpcenter.blogspot.com/2012/01/toyota-tercel-consuming-more-fuel.html

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How to maximize fuel economy on your vehicle?
http://schematicsdiagram.blogspot.com/2011/11/how-to-maximize-fuel-economy-on-your.html

------------------

How to Increase gas mileage on 2011 2500HD Duramax 6.6?

http://schematicsdiagram.blogspot.com/2011/12/how-to-increase-gas-mileage-on-2011.html
------

How to Replace a Fuel Injector

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-fuel-injector.html


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How to Replace a Fuel Pressure Regulator?

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-fuel-pressure-regulator.html

----------------

How to Replace a Fuel Pump?

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-fuel-pump.html

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HOW TO CLEAN A FUEL SYSTEM

http://schematicsdiagram.blogspot.com/2011/07/how-to-clean-fuel-system.html

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HOW TO REPLACE A FUEL TANK

http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-fuel-tank.html
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HOW TO REPLACE A FUEL TANK CAP

http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-fuel-tank-cap.html

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HOW TO REPLACE A FUEL PUMP ASSEMBLY

http://schematicsdiagram.blogspot.com/2011/08/how-to-replace-fuel-pump-assembly.html

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How to test Fuel Pressure and replace Fuel Pump on Acura Car models?

http://repairhelpcenter.blogspot.com/2011/11/how-to-test-fuel-pressure-and-replace.html
--------------------


Jaguar Fuel Pump

http://schematicsdiagram.blogspot.in/2012/07/jaguar-fuel-pump.html
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Adding performance chip to increase Fuel mileage MPG?

http://technoanswers.blogspot.com/2012/01/adding-performance-chip-to-increase.html

--------------

How to test Electric fuel pump on GMC sonoma?

http://technoanswers.blogspot.com/2012/01/how-to-test-electric-fuel-pump-on-gmc.html

-------------

Fuel gauge drops to Empty?

http://technoanswers.blogspot.com/2012/01/fuel-gauge-drops-to-empty.html

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Fuel pump not working on 1991 Ford Ranger?

http://technoanswers.blogspot.in/2012/01/fuel-pump-not-working-on-1991-ford.html

------------

Fuel pump has no power on 2002 ford 350 7.3 diesel?

http://technoanswers.blogspot.in/2012/01/fuel-pump-has-no-power-on-2002-ford-350.html

------------


How to replace fuel filter on BMW 525i?

http://schematicsdiagram.blogspot.in/2012/03/how-to-replace-fuel-filter-on-bmw-525i.html

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These will help.

Thanks.

Posted on Nov 26, 2012

5 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

LEFTY64
  • 69 Answers

SOURCE: need to change fuel filter 1993 cadilac eldorado

The Fuel Filter is located: Under vehicle, driver side, below seating area, driver side of fuel tank, mounted on frame in fuel line.

Here is the replacement procedure. Hope this helps
Lefty64

WARNING Fuel supply lines on all vehicles equipped with fuel injected engines will remain pressurized for long periods after engine shutdown. The pressure must be relieved before servicing these fuel systems.

  1. Disconnect the negative battery cable.
  2. Depressurize the fuel system.
  3. Remove the filter bracket retainer.
  4. For plastic type fittings:
    1. Grasp the filter and one fuel line fitting. Twist the quick connect fitting 1 / 4 turn in each direction to loosen any dirt within the fitting. Repeat for the other fuel line fitting.
    2. Squeeze the plastic retainer release tabs and pull the connection apart. Repeat for the other fitting.

  5. For metal type fittings:
    1. Use a fuel pipe quick-connect separator J37088 or equivalent. This is available from your local parts store.
    2. Insert the tool into the female side of the connector, then push inward to release locking tabs. Pull the connection apart.


Posted on Apr 11, 2009

  • 563 Answers

SOURCE: how to get off fuel tank hold strapes, bolts are

If you have enough room under the car, put a wet towel by the rusty bolts and around the area. You will have to saw off the rusty bolts. The wet towel will catch sparks coming off the saw blade. Cut off the leaking metal-line, and replace with a good hose.
You could get new metal straps for the dealer.

Posted on Nov 04, 2009

  • 10 Answers

SOURCE: Cadilac wont start has fuel pressure in line and spark

CHECK VATS VEHICLE ANTI THEFT SYSTEM WILL SHUT DOWN CAR IF HAVING PROBLEMS. ALSO CHECK IGNITION SWITCH

Posted on Apr 13, 2010

  • 120 Answers

SOURCE: I have a 2003 Escalade 6.0. I recently replaced

SOUNDS LIKE TIMMING CHAIN REPLACEMENT NEEDED

Posted on Jun 16, 2011

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I'm trying to change the fuel pressure regulater valve on my 2004cts cadilac.I checked the fuel rail not there. Someone told me It is on top the gas tank.Please help me locate it.


What engine does yours have ? 3.6 L engine the regulator is inside the fuel tank !
2.6 an 3.2L is on the fuel rail !
5.7L inside fuel tank !
The fuel pressure regulator attaches to the fuel return pipe on the fuel sender assembly. The fuel pressure regulator is a diaphragm-operated relief valve. A software bias compensates the injector on-time because the fuel pressure regulator is not referenced to manifold vacuum. The injector pulse width varies with the signal from the mass air flow (MAF)/intake air temperature (IAT) sensor.
With the engine running at idle, the system fuel pressure at the pressure test connection should be between 380-410 kPa (55-60 psi). With the system pressurized and the pump OFF the pressure should stabilize and hold. If the pressure regulator supplies a fuel pressure which is too low or too high, a driveability condition will result.
You would have to change The modular fuel pump sender assembly !
Now what makes you think you need to have it changed ?
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Cranks and starts are two different things.
If it cranks but won't start it could be loosing fuel pressure overnight.
If it won't crank in the morning, you could have a bad cell in the battery or something draining the battery overnight. Such as the interior lights coming on and off.
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Under hood fuel lines, touching coolant or heater hoses.
Fuel lines under vehicle close to or not shielded from exhaust pipe, converter, muffler. Fuel lines pinched or crushed.
Fuel filter changed recently.
Fuel pump pressure. Fuel pressure regulator & Fuel pressure sensor.


The age of your vehicle also guarantee's a vacuum leak. It may sound silly but the truth is rubber grommets, and hose's shrink and dry out over time and the harsh environment under the hood makes it worse. Check all vacuum lines and fittings attached to the intake manifold, valve covers (pcv valve), and be sure to check for a vacuum fitting on top of the intake just behind the throttle body. Does it fit tight in the hole? You can seal loose fittings with a high-temp RTV (Red) silicone sealant/adhesive. Several small leaks add up and your engine, heat/AC, and transmission will be all to glad to tell you about it.

Aside from that, if you are still having problems, Have a look at the MAP & Oxygen sensors. Finally, you may end up replacing the TBI throttle body assembly.

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Check fuel pressure regulator.Start engine hook fuel gauge to fuel line check pressure ready then pull the vacuum hose of the fuel regulator if pressure rises 5-10 psi then its good.

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i'm assuming you disconnected the fuel line and placed the line in a container to catch the fuel when observing the flow.

it might sound strange but i think there might be a leak in the tank coming from the fuel pump assembly. it's possible a tube or hose is broken on the assembly and the pump is just pumping the gas back into the tank.

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Need to change fuel filter 1993 cadilac eldorado


The Fuel Filter is located: Under vehicle, driver side, below seating area, driver side of fuel tank, mounted on frame in fuel line.

Here is the replacement procedure. Hope this helps
Lefty64

WARNING Fuel supply lines on all vehicles equipped with fuel injected engines will remain pressurized for long periods after engine shutdown. The pressure must be relieved before servicing these fuel systems.
  1. Disconnect the negative battery cable.
  2. Depressurize the fuel system.
  3. Remove the filter bracket retainer.
  4. For plastic type fittings:
    1. Grasp the filter and one fuel line fitting. Twist the quick connect fitting 1 / 4 turn in each direction to loosen any dirt within the fitting. Repeat for the other fuel line fitting.
    2. Squeeze the plastic retainer release tabs and pull the connection apart. Repeat for the other fitting.

  5. For metal type fittings:
    1. Use a fuel pipe quick-connect separator J37088 or equivalent. This is available from your local parts store.
    2. Insert the tool into the female side of the connector, then push inward to release locking tabs. Pull the connection apart.


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