Question about 1990 Buick Century

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How to change the fuel filter on 1990 Buick Century V4

Depressurize fuel line as well

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
  • 2 Answers

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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

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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

heavymetal77
  • 721 Answers

SOURCE: Change Engine Air Filter in 1999 Buick Century

Well you didn't say what engine is in it so,I'll wing it. Assuming it's a v6, the airbox is located in the front,probably driver side. Remove the 4 or 5 wing nuts or Phillips head screws. Gently but firmly lift the top housing & slide the old filter out. Put the new one in,making sure it's in the same way as the old one came out. It can't go in upside down anyway but I'm being specific. Re-install the housing & done!!

Posted on Jun 21, 2009

zaldyboy01
  • 293 Answers

SOURCE: my dash light went out on my 1990 buick century.

Find your fuse box, read the cover and find the cigarette lighter and match the drawings with the arrangement of the fuses, when you find it, pull it out and check if blown out or open circuit, then replace it with a the same value of amp. ok

Posted on Jan 05, 2010

drsinister69
  • 2317 Answers

SOURCE: 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.

Posted on Mar 12, 2010

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


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I have a 1990 Buick century, that will not start, i have changed the ignition module, fuel regulator, plugs and wires, fuel filter. When changed the fuel regulator it started and ran great, shut it off and...


Sounds like your fuel pump is weak so i would check the fuel pressure first.The fuel pressure should be 40-47 psi with key on and engine off and 31-44 psi with engine running.If its not within these specs then replace the fuel pump.

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Car runs fine while driving but dies when sitting still, Starts rught back up


This symptom would be caused by a clogged fuel filter. It is on under the car on the driver's side near the tank. It will look like a cannister and is connected to the fuel lines. You will have to depressurize the fuel system. To do this, open you hood and find the fuse box on the driver's side near the battery. Open the box and remove the fuel pump relay. It will labeled as such. Pull it straight out. Now turn on your engine till it stalls.

Now you can safely remove your fuel filter. Wear eye protection. Unclip the fuel filter from the lines using a screwdriver withouth damaging the fuel liens. Unbolt from frame and twist fuel filter out. Not the direction of the arrow. Replace with new on with arrow pointing in the same direction. Now twist in and bolt on. Clip to the frame using the new clips provided with the filter. Connect fuel pump relay and start engine. Thanks for using Fixya.

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The fuel pump for a 1990 Buick Century is located inside the fuel tank.

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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.

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The fuel filter is located under the vehicle in line the fuel feed line.
Follow the fuel lines from the tank and you cant miss it. Good luck.

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Hello, do I need to depressurized the fuel system on my 1990 pathfinder before i change the fuel filter and if so,how? thank you. Sorry about my English.


if you can find it, take the fuel pump relay out and try to start it up. it may start and stall. thats ok, OR just loosen the pipe at the filter slowly, the gas will leak out, then it will be ok to remove the filter.

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Locate fuel filter on a 1990 190e mercedes


The fuel filter is located under the car just in front the of rear axle near the right side (passenger side if you're in the USA). It's right there with the fuel pump. Make sure you depressurize the fuel line before changing it though. :) Also have a fire extinguisher close by - just in case things get crazy.

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1990 buick century


Yes, the problem is in the fuel filter

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