Question about 1990 Buick Century

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How to change the Fuel Filter on a 1990 Buick Century Custom v4?

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  • Josh Kaltved Jul 15, 2013

    also how to relieve the fuel pressure when changing

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  • Buick Master
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God bless you

Posted on Jul 15, 2013

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Posted on Jan 02, 2017

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SOURCE: Where is the fuel filter located for Buick Century 2001

The fuel filter is located underneath the car in front of the gas tank.
You have release the fuel pressure. Remove the fuel filler cap, locate the fuel test port on the fuel rail on the passenger side on the end of the right real fuel rail for a 3.1L engine.
3.8L engine yhr test port is located at the pressure regulator under the trim cover.

Posted on Sep 23, 2008

emissionwiz
  • 75797 Answers

SOURCE: i have a 1990 buick century custom andneed to

Your turn signal flasher should be located under the dash on just to the right hand side of the steering column. It we most likely be a round little can shaped object

Posted on Feb 23, 2009

  • 1779 Answers

SOURCE: how do I change the fuel filter in a 1999 Buick Century Custom?

Philly, the fuel filter is attached to the frame in front of the gas tank, under the driver side of the car. You must relieve the pressure in the fuel line before you start, and it is also recommended that you disconnect the neg. battery cable. After disconnecting the neg. cable, remove the gas cap. Next, look under the hood on the fuel rail for a shrader valve (like the type on a bicycle tire). Place a rag under the valve, remove the cap, and press the valve in with a plastic pen to relieve the pressure in the line. You can now go under the car to remove the filter. You can disconnect the fuel lines easily with an inexpensive plastic disk made for this purpose (only a few $ for several sizes at a parts store). Be careful of fuel in the line that will drain out, no smoking or sparks during this procedure. Should be 1 bolt securing filter to frame. Note arrow on new filter, and install in the correct direction. Replace cap on shrader valve, put gas cap back on, reconnect battery cable. The low coolant light is probably a faulty sensor signaling that it's low, when it's actually ok. Look for wires coming from the reservoir bottle, you should be able to find the sensor at the end of the wires to replace it. If you change the fuel filter in a garage, leave the door open for air circulation, gas fumes can explode easily, having the door open will help dissipate the fumes.

Posted on Apr 05, 2009

  • 507 Answers

SOURCE: I need to replace the fuel filter, 1994 Buick Century Custom 3.1

Find fuel lines, there should be a threaded port on the intake line. Push in with a drill bit, key, or some kind of thin metal to release pressure. Basically gas will just spray out. When I worked in the shop, I never released pressure, I just unhooked a line near the tank and let it drain for 15 seconds. To prime, turn the key into run position leave it there for 5 second, then switch it off again. Do that 4 or 6 times and it should almost fire right away again.

Posted on Jun 08, 2009

citroenchris
  • 600 Answers

SOURCE: 2000 buick century custom. fuel gauge fluctuates

The sender unit has a fine resistance wire with a slider to read the level, the slider or wires are worn and making intermittent contact, the low fuel light is a seperate switch so it will still work.access to the sender is usually under the rear seat cushon, under the soundproofing and a cover, have a look and describe what you have .

Posted on Nov 01, 2009

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Check your fuel pressure at the schraeder valve that is on the fuel rail. If you have fuel pressure, check for spark.If no spark, then ignition diagnosis is needed.If no fuel pressure, check for diconnected, or pinched wires, as this can easily happen during an engine swap.

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Sounds like you need to replace the fuel pump relay which is about $13 at Autozone. It is simple to replace. It is under the hood on the passenger side right behind the headlights.

Oct 11, 2010 | 1992 Buick Century

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1990 buick century


It sounds like the engine computer. Also check the resistance in the injectors and o-rings. O2 sensor and coolant temp sensor could give you a problem.

Mar 11, 2010 | 1990 Buick Century

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I have a 90 buick century custom 6 cylinder and when I accelerate the car shuts completely.


Check fuel pressure after replacing filter. Fuel pump may be going bad.

Jun 27, 2009 | 1990 Buick Century

1 Answer

1990 buick century


Yes, the problem is in the fuel filter

Jul 01, 2008 | 1990 Buick Century

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