2002 Buick Park Avenue Questions

All 2002 Buick Park Avenue Questions

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in rainy or wet conditions. What is this issue due to?
I am getting a exp200 code on my dash and cannot find any info as to what this code means??
Code was PO 420 Bad 02 Sensor on bank 1 or bad catalytic converter. Have replaced the 02 sensor, catalytic converter, computer, knock sensor, and crank sensor. Car continues to intermittently cut off. May drive 4-5 ...
I checked the battery and alternator. But when I start the car I have to keep on the gas and when I try to get it out of park it will stall.
I have a 2002 park avenue ultra with 187,000 miles on it. It started shifting hard after it gets warmed up. Especially between 2nd and 3rd gears. It feels exactly like If I were shifting with a manual valve body. When...
the engine data section shows the oil pressure goes from zero to 60 and contantly changes non stop
need to pass emission test mechanic charged me 750.00 light still on did smoke test insists that system wont reset because tranny clutch plates are worn. wants to rebuild trans
I decided to take a look at some things that woulx cause fuel in oil and throttle position came to mind and carbon build up in throttle so I took off air filter sleeve and noticed there was some coolant in sleeve so I...
My 02 park avenue seems to drive better while in drive oppose to idle..rough idle misses and fuel smell ...well I also have on board diagnostics either ..emmisions said its non existent Passed tailpipe test...but ins...