Buick - Century :: 2004 - Constant Ticking / Tapping / Clattering During Acceleration


Mar 16, 2016

2004 Buick Century. 3100 motor. 150k miles... Recently discovered strange noise but not sure exactly how long its been happening. (I listen to the radio pretty loud)

Engine sounds normal at start/idle (hot and cold). During acceleration I hear a constant ticking/tapping/clattering at a decent volume from 1st to 3rd..after 3rd it quiets down a bit but still constant. It goes away completely directly after shifting into 4th. I then cruise down the highway at 75-80 with no problem whatsoever.(It can also be heard if i rev the engine in park.)

The day I noticed it i immediately checked the oil. It was a little over a quart low. I filled it but the sound has not changed.

I wouldn't say its a full on knock but it does sound alarming like the engine could blow at any moment from 1st to 4th. Sounds perfectly fine after that.

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Last month I changed the oil and filter in my 1992 Buick Century with 264000 miles. I used a name brand (Citco) of the correct oil, 10W-30, API Service SN. I bought the oil on sale at a local supermarket. Now, I hear a loud tapping sound from the engine, especially when it's cold. It dosen't sound as loud after warm-up. The tapping increases in frequency when I rev up the engine. I don't intend to keep this old car much longer, but is this problem an immediate concern? Could it be a valve problem? Could it Could I have bought some bad oil with a conterfeit label? Other than this noise, the car runs okay.

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Buick - Century :: 1999 - Hesitate During Acceleration / Stalled - Code P0102

1999 buick century custom .. 3100 motor .. 200k+ miles ..

It all Started 2months ago.. once every few weeks my car would hesitate during acceleration (leaving a light for example) but just once.Then started it up one day and it was idling rough..also stalled out twice.

Dropped it off at a shop after hours so he could check it out in the A.M.he calls n says its not acting up at all.

Get the car back and drive it 2 more weeks..then it happens again. Rough idle and hesitating...take it directly to the shop but its acting normal again by the time I get there (starting to feel like im crazy)

So I take things into my own hands... I change air filter, clean MAF and throttle body. Change the plugs and wires.

start it up and it seemed to run better than it ever has.. for about 5mins.I took it for a test drive and it started sputtering and bucking and eventually died to the point of undrivable.

Got towed home.NOW it starts dang near everytime but runs EXTREMELY rough for a few seconds before eventually dying. It will run a bit longer if I unplug the MAF (45seconds maybe) but runs like fecal matter the whole time

I have swapped out the MAF, EGR valve and IAC valve with parts from a 97 century (which runs fine)And nothing seemed to change the condition.

Changed fuel filterchecked fuel pressure with key on (41psi)Also replaced the timing chain and gears (thinking it slipped) but it didnt make a difference.

I pulled codes but all it had was a P0102 (MAF low input)But I think that might be from it being unplugged so many times?

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Buick - Century :: 2004 - Dash Indicator Light Very Dim?

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I have a 2000 Buick Century that I cannot get to start. While my wife was driving home it started to sputter (like running out of gas) and did a little back firing. She made it home and I put in some gas (Just to make sure) and the care cranks over but will not start. I have replaced the fuel filter, checked the spark plugs and replaced the CAM Sensor. The car still will not start.

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Buick - Century :: 2000 - Oil Getting Into Coolant

My wife has a 2000 Buick Century with about 150,000 miles on it. It has been relatively trouble free. Recently, the "low coolant" light began to come on.She took the car into a garage where she was told there was oil in the coolant and the sensor had been compromised. The cooling system was flushed and cleaned and a new sensor installed. The "low coolant" light continued to come on. She took the car back in. She was told the wrong sensor had been installed. When she went back for the car the second time, she was told the oil in the coolant was preventing the new sensor from working and there was nothing more the garage could do. I went in and asked questions, primarily how serious was the condition, and couldn't get a straight answer.

We are due to drive to Florida in November. My wife would like to take it to a garage there. Is it save to drive it as is? What are the implications of oil mixing with coolant? What is causing it to happen?

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My 03 Buick century is overheating. I changed the thermostat and the water pump. And still overheats as soon As I start driving. I am also getting when it is overheating some misfiring in cylindar 1. I am going to reflush and bleed the coolant even though it seems to be full . i dont think it is disappearing. Is it Possible i have a blown headgasket or intake manifold leak?

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Century :: 1994 Buick 3.1L Running Hot / Not Overheating

I am having a very tricky problem with my Buick.

For approximately the last 4 months, it has been (at least according to the heat gauge on the dash) running pretty hot. Not overheating, but getting close. And it doesn't take long for it to get there. This all seems to have begun right around the time that my father and I flushed the coolant system.

Since then, I have replaced some parts, and learned a few things in the process.

I learned that there are bleeder screws which can be opened to let air bubbles out. And I have heard that the 3.1L is especially susceptible to them.

New parts which I have installed:

- thermostat
- coolant temperature sensor
- radiator cap
- upper radiator hose
- lower radiator hose

I have checked the water pump and it seems to be perfectly fine. No leaks. No signs of bad bearings. And it circulates coolant just fine. I have not been witness to either cooling fan, primary or auxiliary, switching on in a while.

The exact symptoms are these:

The heat gauge does not take long to get to mid-way point, but will sit at that point for a bit if the vehicle remains stationary. Once the vehicle is in significant motion, the heat gauge will climb fairly quickly, especially with moderately high RPMs. It WON'T touch the red though, but will get very very close to it. The car runs fine. It does seem to be a bit underpowered, but I am comparing it to my fiance's 1996 Olds Cutlass Ciera, which I believe has a different transmission. My Buick does not seem to have lost power since this problem arose. The cooling fans no longer kick on. The oil appears fine. The coolant as well. With the radiator cap off, coolant does not bubble out or shoot out.

I made sure after changing upper and lower hoses to fill the radiator, let the car run long enough for the thermostat to open, and then slowly poured more coolant into the radiator until it was full again. And the reservoir is at proper level and the the reservoir hose s not clogged.

I am not SURE, but I don't believe the radiator is clogged. I believe that covers it, at least as well as I can.

BTW, I do not know where the fan relays are, otherwise I would test the fans to see if they still work.

What the heck is up with my Buick? Also, it has 97,xxx miles on it, and the transmission fluid is at proper level and looks normal.

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My grandpa's old wood paneled station wagon is sick. The idle seems to be getting rougher and rougher with every time I kill the battery (I've somehow left my headlights on four times in the past two months and needed a jump). It's to a point now where if I don't throw it in neutral at stop lights and keep a tiny bit of gas on the engine it stalls out.

Notes:*When it first gets jumped after being dead, if I stop even for a second, it dies instantly.*While cruising - it is fine. *It idles smoother stopped in neutral than it does stopped and in drive. *It seems a bit rougher with the engine is cold, but still rough and can stall with the engine hot. *Some random times it idles just fine (like for example the first few seconds on start up, and then it sounds like the engine is decreasing in rpm automatically, and then it is rough again).

Could the dying battery and rough idle be related?? The battery guy says "if it starts fine, the battery is fine" (it does start fine, although keeping the radio on for 20 minutes without it running will kill it).

Also other problems with my car in case this has anything to do with it: *I have a leaky tail pipe*my ABS has recently been randomly engaging at low speeds (next problem to work on...)

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I can drive it for days or hours with no problem, and then suddenly it just decides to leave me stranded. Usually i wait and it gets me home, but a couple times it didn't. I've drained the battery twice on two different occasions months apart trying it, and waiting and trying it. Both times with barely enough juice the following day to turn it over, it fired right up, rev'd the engine, then ran fine. I don't think it's an issue with fuel because on one occasion while trying to start it I laid into the peddle until I could smell gas under the hood- and it never has issue while running, only on start-up.

So far the only thing I've done is replace the spark plugs- it runs better now, but doesn't start any differently.

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