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Buick Century Questions

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Do not know how to get into it and need advice
The plugs, wires, and ignition could are good. It is getting fuel, and there are no codes coming up on obd, except for a generic misfire code and egr no flow during purge. Is this symptomatic of a clogged muffler or catalytic converting? The car accelerates as long as it gets pushed easy, hard to accelerate when need to do so quickly.
trunk, inside light, working backward, closed= on? I can't find the switch that effected by lid position either. Also the door/trunk ajar light stays lit when running ? Any practical (i can try) incite will be appreciated. SIA Ronald
Blows cold air until you step on gas. Blows hot while giving gas, let off gas, blows cold again.
I have done everything i can think of no codes car runs great but i cant get the catalyst or egr monitors to run
Service engine light is on but noticed there is also a service vehicle light which is not on
Keeps blowing everytime crank it
2000 Buick century runs great then while in drive it boggs out in drive then i had to push it in a parking lot have to wait a hr or less to start up the bits fine again what is the main issue also the gas floats more than it should not too bad bud goes to empty n back weird plz help note this is the second fuel issue bought pump last year than it does again need help in detail digram
Location of filter .. trying to get help on if any fuel electric wires etc are the problem and to see if it is the fuel pump and not nothing else don't wanna burn up any parts
Century 2002 custom.
The car cranks and after about 8 seconds kill. Only when it's cold. After getting to the normal temperature it kills sometimes. then whenever I step on the gas pedal, it doesn't accelerate with power, or constantly, it feels like it goes up and down, but never get to the normal point of power, and takes forever to get to 40, it's like it doesn't have power. I checked all the fuses they're good, and I changed throttle position sensor, the one under it, cleaned the throttle, cleaned the MAF, and it doesn't give me codes... People said catalyst converter, but it doesn't get red... And I changed the oxygen sensor on it too... IDK what else to do.
Please help...
Thanks and God bless
Just not doing anything the other windows are working an I bought a new regulator 1mth ago and it worked fine ..
my car is an automatic it will shift gears once i get going. It just does not accelerate from a complete stop I have to put the car in 2nd gear to get going. Sometimes the car accelerates and is good for awhile then it goes back to not accelerating. I think there is a short in the wiring. I replaced the vacuum modular and the car accelerated, then stopped.
Started driving and my temp gauge went to max hot. Turned around and headed home and the gauge went back to normal. Don't know why
unsure but running the ac on the car does not overheat or spike its in the center but once its off it goes up and when i turn off the car or on park i can feel the heat underneath the car, what could it possibly be?
How long have you had this problem? for over a week
None of my windows won't let down
What seems to make the problem better or worse? Nothing
How long have you had this problem? Since I bought this car
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