I got the twitching problem after I brought my car in for repairs at a transmission shop. Apparently, they tried to use my wipers to clear accumulated snow off the windshield which broke my wiper linkage. That was 3 years ago. I replaced it with used parts which lasted 2 years. Last year, I got really slow wiping action and it eventually stopped completely due to joint seizure. Not good in the winter time. So I replaced it yet again with another used part. If this one fails again, I'll splurge for the $4-500 it costs for brand new ones from the $tealer
BTW, you can't tell if the joint is seized until you remove the whole assembly from the car. It's not a fun job.
Last edited by kenmar; 01-16-2011 at 01:05 PM.