Question about 1999 Buick Century

2 Answers

Moisture causes engine to "buck"

I have a 1999 buick century with 195000miles. We recently changed the wires, plugs, top 02 sensor, and a metal plate located under the coil packs(not sure what it is called). In addtion to this the coil packs tested good. When it rains or water condenses the car will start but it "buck" on acceleration. It will only run 10 mi p/hr. Then it dies. Help! I am desperate, I do not know what to do? Advanced Auto Parts put it on a meter, it pulled a 1374 code missfire. On dry days the car runs fine but the engine light stays on. I have lost gas mileage in the process went from 33 city to 19 city! UGH!

Posted by on

Ad

2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I would also consider using electrical sealer instead of replacing parts. They sell it at auto parts stores, and it effectively puts a waterproof coating over ignition parts like your distributor or coil packs and would prevent shorts.

Posted on Dec 23, 2009

Ad
  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Buick Master
  • 1,000 Answers

Rod, The first thing I would like to try is to take a pump water spray bottle filled with water. On a dry day when the engine is running fine, have the engine running and begin to "mist" water with the spray bottle on small sections of the ignition coils at one time. You want to see if you can recreate the problem. Continue to spray the coils, spark plug wires and spark plugs until you get the miss-fire. It should help you narrow down were the problem might be. If you do this in a relative dark area, you will be able to see the spark jump. A cracked coil tower or coil is possible.
The 1374 code is your 3X reference circuit failing. The "plate" you referred to is the ignition module that uses the 3X signal, among other inputs, to calculate ignition function.
Try the water mist test first and we can go from there.
Let me know.
Regards.

Posted on Feb 11, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

1989 buick century station wagon no spark cranks but does not turn over... changed coil pack, Control module, brain,spark plugs wires...any ideas


I'm not sure of engine Size? Did you check the crank sensor? Any applicable trouble codes? Do you have a fuel injector pulse, engine cranking?

May 24, 2015 | 1989 Buick Century

2 Answers

What will cause my 1996 buick century to misfire.


The list is long. Bad spark plug/s, wire/s, distributor cap, camshaft, valve/s, piston/s, gasket/s, vacuum leak, fuel injector/s among other things. Some diagnosis will be needed.

Jul 03, 2014 | 1998 Buick Century

1 Answer

Ck engine light stay on


I battled this on my 1999 Buick Century with 3.1 liter engine...
After replacing the Crank Sensor (located under the harmonic balancer if anyone needs to know) that was not the problem.
Replaced coil packs and Ignition Control Module...again NOT the problem.
I replaced the Oxygen Sensors...NOT the problem.
I replaced intake gaskets, NOT the problem BUT highly recommended (because they are made of recycled plastic with a rubber seal strip, and yes they WILL crack and ruin an engine...look for any signs of coolant seepage around theis are...FYI)
The problem was the EGR valve, but also know, that if the EGR is the problem, you will need to clean out the "port" leading back under the fuel plantum with a very stiff piece of heavy guage steel wire.
Hope this helps and best of luck !

Mar 03, 2014 | 2002 Buick Century

1 Answer

97 century turns over but won't start


If it is 3.1 engine, I would guess it to be Ignition (Spark) Control Module located under the coil packs.(coil packs bolt/screw directly onto the Module itself)
Best of luck !

Feb 16, 2014 | 1997 Buick Century

1 Answer

1994 buick century coil pack location


The three coil packs are on the top of the engine, (I assume this is the 3.1 V6?) here is a picture of the coil pack, but all you need to do is follow the spark plug wires back to the coil packs (there are 3 on the V6).


1_23_2012_8_53_13_pm.jpg

Jan 23, 2012 | 1994 Buick Century

1 Answer

I have a 1992 buik century and it hesitates when i accelerate i changed the wires ,plugs n fuel filter . any ideas ?


CAN YOU GIVE ME THE ENGINE SIZE?CHECK AND MAKE SURE YOUS COIL PACK IS GETTING A GOOD GROUND,AND WHAT HAPPENS IS THE COIL PACK IS MOUNTED ON A PLATE WITH A DIELECTRIC GREASE BETWEEN THE PACK AND PLATE,MAKE SUR IT IS CLEAN UNDER THE PACK AND IT IS GROUNDED GOOD.NEXT CHECK YOUR CONNECTIONS ON YOUR SENSORS,DOES IT IDLE GOOD,I MEAN NO MISSING OR FLUCTUATION WHEN IDLING.CLEAN THE MASS AIR FLOW SENSOR WHICH IS IN THE AIR DUCT.TAKE IT OUT BUT FIRST TAKE OFF YOUR NEGATIVE CABLE AND THEN TAKE OT THE SENSOR AND BE VERY CAREFUL AND CLEAN IT WITH SPRAY GUMMOUT.THIS MIGHT BE YOUR SOLUTION,,LET ME KNOW.

Jan 02, 2012 | 1992 Buick Century

1 Answer

Where ie the 2 crank sensors on a 1999 buick century with 3.1 engine



  1. Crawl under the front of the vehicle and look up at the back side of the engine. The crankshaft position sensor is made from black plastic and has a two-wire connector attached to it. The sensor is located on the back side of the engine block, halfway between the oil pan and the top of the block.


have a great holiday !! they only use one sensor, a 3x or 24x. above is for 3x sensor, to replace 24x just call an auto parts store and they should tell you the location and how to change it.

Dec 12, 2010 | 1999 Buick Century

1 Answer

I have an 2002 buick century that has a iginition miss. We have changed the spark plugs, iginition wires, coil pack. It first came back with a miss fire number 2 cyclinder. The coil pack was changed. Now...


double check plug wires to be sure they go to the right cylinders. After that i would check fuel injectors
You need a listening device and listen for metallic clicking sound. Bad injectors will be silent and they do cause the same miss

Apr 21, 2010 | 1997 Buick LeSabre

1 Answer

No trunk light, trunk release, or back-up lights: Please help!


How can I adj. . a trunk light switch on a 02 Buick Century

Sep 26, 2009 | 1999 Buick Century

Not finding what you are looking for?
1999 Buick Century Logo

719 people viewed this question

Ask a Question

Usually answered in minutes!

Top Buick Experts

yadayada
yadayada

Level 3 Expert

77201 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22265 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a Buick Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...