Problem with my 1997 Buick Century.
Engine size = 3.3L V6.
Repairs for this problem = A/C compressor, orifice tube and drier
replaced about 1 year ago.
The problem I have is that when you turn the ac on the cool air only
comes out the 2 vents on the passenger side. The 2 vents on the
drivers side have warm air blowing out. A/C is controls are set to max
air and max cold on the temp control.
If the car does not have dual zone climate control, this sounds like a
problem that some mechanics miss. This problem is a low freon
charge in the system. It will not be apparent if just looking at freon
gauge pressures- they will be normal. But a system that is 1/2 pound
low will cause the passenger side vents to blow cool or cold air, and
the drivers side to be less cool or even warm and this car. There is
simply not enough freon in the system to cool the air to the drivers
side.
If it does have dual zone, then the drivers side temperature actuator
motor has failed. This actuator controls the temperature door for that
side. Dual zone systems have a temp door for each side.
2002 Buick Century. 3100 V6
Warning_lights:
service engine soon
Repairs : replaced transmission, replaced flight wheel, changed transmission oil
Question: 2002 Buick Century is having trouble accelerating forward, feels like its dragging. Car
functions well in reverse. Replaced transmission and still having the same problem. I appreciate your
time & getting back to me. Manuel.
Answer: This could be a transmission torque converter problem or
you could easily have a clogged catalytic converter that is causing
your poor acceleration problem. It would act just like a bad
transmission as you try to gain speed. In reverse it would not
probably be as noticeable since you're not going very fast. With
the check engine light on, you have a trouble code that is set and
needs to be checked out. It is most likely due to your acceleration
problem and once the code is retrieved it will help in diagnosis. It
is possible you have a wiring problem under the hood that is
getting pulled and only gets effected when the engine moves
normally when in drive and not reverse, since the engine moves in
the opposite direction.  Really no other problems come to mind
with this issue, if you're experiencing a misfire condition or some
other running rough issue, that would be a cause for your
problem, but you don't mention anything like that