Buy the repair manual and read it !
Anonymous posted an answer for this 1996 Buick Regal Olympic Gold:
"The idler pulley is spring loaded. With the correct size socket and ratchet and a strong..."
Anonymous posted an answer for this 1999 Buick Century:
"Check the harmonic balancer"
Anonymous posted an answer for this 2000 Buick Regal:
"contacts in window motors sometimes get dirty from lack of use. Take a rubber hammer and..."
Anonymous posted an answer for this 1988 Buick Regal:
"run a plastic line down the dipstick tube & **** it out, just like a giant drinking..."
Anonymous posted an answer for this 1999 Buick Regal:
"Check the harmonic balancer"
Anonymous posted an answer for this 1989 Buick Regal:
"check harmonic balancer"
Anonymous posted an answer for this 2001 Buick Regal:
"test the EGR valve."
Anonymous posted an answer for this 2000 Buick Regal:
"Could be in the shifter switch linkage. Regals have a wiring harness that sometimes give..."
Anonymous posted an answer for this 2000 Buick Regal:
"passenger side under car near passenger front wheel behind a plastic splash shield. just..."
Anonymous posted an answer for this 1993 Buick LeSabre:
"harmonic balancer could be going bad. Rubber ages and can cause wobble and timing shift."
Anonymous posted an answer for this 2002 Buick Regal:
"remove cowling under hood to expose wiper motor linkage. You have to try it many times but..."
Anonymous posted an answer for this 1992 Buick Park Avenue:
"It could be the starter or starter solenoid. Using a voltmeter, see if you have power, 12..."
Anonymous posted an answer for this 1991 Buick Park Avenue:
"Sounds like the EGR valve is bad."