Question about 1990 Buick Century

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Where is the fuel relay located on 1990 Buick Century Custom V4

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Posted on Jan 02, 2017

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SOURCE: 1998 buick century custom

necesito diagrama electrico de las luces

Posted on Aug 11, 2008

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  • 196 Answers

SOURCE: Radiator Plug Location

It should be on the right lower side of the radiator when looking at the engine .

Posted on Jan 08, 2009

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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

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SOURCE: locate crank sensor on 1990 buick century

Hello, the crank position sensor or (CPS) censor is located directly behind the harmonic balancer (or fly wheel at the very bottom). The sensor is located on the right side of the harmonic balancer when facing the front of the motor. You must remove the harmonic balancer to replace the sensor. You must also re-align the sensor with 30 thousands of an inch tolorence, or your car may idle rough or may not start. I own a 1990 Buick Century and just replaced my CPS sensor last month. There is a trick I learned to reinstalling the new sensor. Let me know if you need that information.

Posted on May 28, 2009

  • 14036 Answers

SOURCE: Where is the fuel pump relay located on a 1993

LOOK ON BACK OF ENGINE TOWARD BACK FIREWALL YOU WILL SEE RELAYS.

Posted on Feb 15, 2010

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1 Answer

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


go to www.automecanico.com and translate this amazing website with your browser and fix it.

God bless you

Jul 15, 2013 | 1990 Buick Century

1 Answer

1998 buick century my heater and ac fan only work on high i'm told it's the blower relays where are they located


they are not relays its a blower motor resistor a one piece unit usually held in by two bolts and an electrical connector either under the passenger side dash or behind glove box

Aug 03, 2012 | 1990 Buick Century

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1990 Buick Century Custom 4-Dr Sedan 3300 V6. New motor, fuel pump, fuel filter, alternator and starter. Turns over, though it won't fire.


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.

Aug 14, 2011 | 1993 Buick Century

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Trying to find the emergency fuel pump shut off switch on a 1994 buick century 3.1l


FUEL PUMP RELAY EITHER LOCATED ON THE UPPER RIGHT SIDE OF THE ENGINE COWL OR FUEL PUMP RELAY LOCATED IN THE RELAY BRACKET ON THE RIGHT SIDE OF THE FIRE WALL.

Jul 12, 2011 | 1994 Buick Century

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Where is the fuel pump fuse for a buick century 1990


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

Jun 02, 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

I have a 1990 buick century custom andneed to replace the signal light flasher but cant fine where it is located please help me


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

Feb 23, 2009 | 1990 Buick Century

2 Answers

Automotive wiring diagrams


Here's a freebie: go to 'autozone.com enter your car info (year, make, model, engine) click on repair manual, then chassis electrical, then to the far right of screen and down, wiring diagrams. Let me know if u have an trouble locating it.

Oct 27, 2008 | 1990 Buick Century

1 Answer

1990 buick century


They are located behind the right front headlights (passenger side). There is a bank of four relays mounted on a common holder. The four are for various purposes, one of which is to control the ac fan on the low settings. I got a bank of four used relays from and olds off of ebay. I plugged in the part number off the one I had into the search box to find it.

If a relay is bad, it will usually rattle.

Good luck!

Aug 09, 2008 | 1990 Buick Century

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