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CHECK THE TRANSMISSION FILTER FIRST AND THEN CHECK THE MODULATOR

AnswerSounds like the transmission needs servicing. Loose bands cause this condition. AnswerCould be a loose or twisted motor mount too. Have you had the water pump serviced lately? Unskilled repair people loosen the mounts and then they twist when he transmission shifts or when you first accelerate..

Good luck!

AnswerFirst thing you should do is check level and condition of your tranny fluid. AnswerCheck the trans fluid, mine leaked out of the front return line because it was rusted through, I did not catch it till it was too late. 900$ vs 6.00$ hmmm AnswerIF YOU HAVE CHECK ALL THE TIPS ABOVE THAT ARE GOOD TIPS CHECK FOR VACUM LEAKS CAN MAME TRANSMISSION SHIFT ROUGH OR CHECK THE DETENT CABLE MITE BE OUT OF AJUSTMENT WOULD BE MY QUEST ,THE WAY YOU CHECK IT IS BY YOUR THROTTLE CABLE UNDER THE HOOD WHERE HOOKS UP TO CARB OR THROTTLE BODY THE DETENT IS HOOK UP IN THE SAME WAY BUT THE CABLE GOES TO THE TRANS ,SO WHEN PRESSING THE GAS PEDAL IT PULLS THE DETENT CABLE AND BEING AJUSTABLE MAKES IT SHIFT SMOOTH OR HARD

SPARK PLUGS NEED CHANGED. I had the same problem. it will run like new. super smooth.

sorry, but i had to create acct to anwer this ?. i have a 97 PA which had the same problem from 40K miles to 90K miles. the problem is the PCS solenoid (pressure control solenoid). had it changed and solved the problem immediately. quite common for 1997 to 2000 PA's. anyways, having same problem again with 200K miles on car now. will have to replace solenoid again. about $600 job, so be prepared.

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โˆ™ 2011-03-19 17:04:59
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Q: What could be the problem if a Buick Park Avenue with 75K miles changes from 1st to 2nd roughly?
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