What Might Cause This?

[mrfc3s]

well, im trying to figure out somthing and im having trouble...

when accelerating in 1,2,3, I hear a loud thumping noize in the drivetrain that increases with speed... im still not sure where but it almost feels like its in-between the front seats... or possiably further back... its only noticable in those gears at around 1,000-3,000rpm range... 2nd gear is the worst. this happens when accelerating at a normal pace... if i take it TURTLE slow and short shift, its not noticable.
Has anyone had this?

also, the Coolent Dummy light is comming on and ive filled the bottle to the top... any ideas? and also how well known is the stock Temp Gauge known for craping out?

Thanks,
Tim

[ldsbeaker]

Check out the flexible disc. It's called a guibo, and it has six nuts going through it. If it breaks, or maybe a little farther back, the carrier bearing, it will make a hell of a racket. these are both on your driveshaft. The guibo right after your transmission, the carrier bearing a little farther back.