Question about 1999 Buick Century

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My 1999 buick century 3.1 has engine light on, not shifting to second.

Code reads, Tran. (Solinoid A) is bad,this is a later model trans. How do you change it? I have been told that. You have to pull the tranie is this true? Thank you.

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  • 74 Answers

You should be able to replace the solinoid with out pulling the trans but you will need to drop the subframe to gain axcess to the side of the trans

Posted on Jan 12, 2013

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Posted on Jan 02, 2017

  • 341 Answers

SOURCE: How to change a water pump on a 1999 Buick Century 3100?

the water pump on the 3.1 isnt to hard to change ...

  1. Disconnect the negative battery cable.
  2. Partially drain the cooling system into a suitable container.
  3. Remove the drive belt guard.
  4. Loosen the water pump pulley bolts before removing the drive belt. This should help keep the pulley from turning as the bolts are loosened.
  5. Remove the drive belt. Remove the water pump pulley bolts and remove the pulley.
  6. Remove the water pump bolts and separate the pump from the engine front cover.

Posted on Dec 09, 2008

lilmikew99
  • 105 Answers

SOURCE: I have a 2000 buick

i would also check the detent cable as well just for safe measures might throw off the sensor giving bad code

Posted on May 10, 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

  • 3640 Answers

SOURCE: Routine maintenance for 1999 Buick Century

have car scanned to identify the problem code as long as the light is on. go to any auto parts store and they will scan it for free.the codes will tell the problem.

Posted on Mar 25, 2010

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1 Answer

I have a 2001 Buick century, I have changed the sparks plugs and wires, the fuel filter and pump and I have changed the tran filter & the car won't go over 20. What else could be wrong with my car.


did you change the parts as a result of warning lights on the dash or was it running badly ?
Are there any indicators of the problem, i.e. lumpy running, inctrasing/decreasing revs, bad starting when cold or when hot etc
... please add more detail and repost

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They only had problems with the 125 transmission. The torque convertor sol. would stick and to get it started you would have to put itt in neutral and when you shift to drive it would cut off again. I believe you have a 440 transmission.

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The shift solinoids are mounted to the valve body which is behind the side cover of the transmission. Usually you have to lower the trans to remove the side cover, which envolves lowering the subframe. If you drop the subframe the steering rack must be disconnected and the engine must be held from above because most of the motor/trans mounts are on the subframe

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Don't listen to him you have a cloged govener switch. I work for jeep have a profesionall mechanic replaced the solinoid pack and the valve body and flush the trans flush and put in a new filter good luck it will be a lot cheeper than overhauling the trans.

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you may have a bad sencer in the tran take it to a well nown tran shop and have them run a scan on it. to be truthful i pretty shore your tran is on its way out.

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