1999 Grand Caravan, 3.8 liter V6 engine, 235,000 miles on it, i've driven it about 1000 miles, bought it 2 weeks ago. Has auto trannie and AC. There is a clunking, repeated regularly noise coming from left front of the car in the past few days and it's getting louder and more frequent. There's a wheel mounting stud minus the nut, it's all rusted up, has to be replaced. Clunking seems related to rpms of the wheel, does not occur in the parking lot, or when the car is driven in reverse or parked. When I get off the gas, it starts, but if I accelerate or hit the brake, it stops.

SOURCE: 1999 dodge grand caravan, noise from right rear wheel area.

It is due to the sway bar links, The problem is that sometime it does not tight till end and it is loose at the sway bar end.
Its very difficult to repair, open most of the time it needs to cut out due to rust and bad design of the end.
You need to replace it with new and make sure it is tight and does not have any play.

SOURCE: 2000 Dodge Caravan transmission issue

have the car scanned for computer codes in the transmission section,most big name auto parts stores will do this for little or no charge, make sure they look for transmission codes. when you get these get back to me and we'll go from there,please rate my fix as i strive to be the best,don't leave negative feedback, just get back to me

SOURCE: Engine stuttering

have you replaced your O2 censor yet? or changed your air filter lately. I know our avenger is pretty picky we had a dirty air filter once and it seemed like the O2 censor went out because it kept trying to shut off when the idle was lower. a new air filter did a bit for it then we got a censor reader that you plug into the brain box of the car or the cigarette lighter and it told us the O2 was out and our car was doing the low idle thing. after we fixed it no problems.

SOURCE: Screeching noise coming from driver side tire

The high pitch sound may come from the brake pads as metal parts hit the disc to signal the owner that it needs change. The metal parts gets exposed when the pads have worn out. The brake also has a hub to cover the disc. See if the metal plate is hitting it but this issue would appear when the wheels are in motion. Check if it is the belts, have the tension checked out. Other than that the bearings are the other items on your wheel that could cause a high pitched sound when you car is in motion.

SOURCE: My 2007 Dodge Grand Caravan makes Whining Noise

Depending on your mileage, if the transmission is mounted side ways (Front wheel Drive) the upper or top, or rear mount can wear out. This causes the engine and transmission to twist binding the linkage on the transmission, However I have not see a 2007 and if it was bad the drive train should still be under warranty if it's not over 100,000 miles. The tork on the other mounts could cause this noise you are speaking of. Also they use oil filled mounts to isolate the engine pulses so when the oil leaks out the motor mount goes metal to metal. However I think the brakes not holding tight so in theory a motor mount could cause this could cause it. A way to test it is put the transmission in forward gear then reverse if it makes a clunking sound then you have some wear somewhere. If you have another person put it in forward and reverse and watch the engine you can find where the noise is coming from. However I will see if it is listed as an after market part and give you a link that you can look at and the price for each. After looking at one of the mounts this may not be your problem here is the link and the price for one of the mounts.
http://shop.advanceautoparts.com/webapp/wcs/stores/servlet/product_Engine-Mount-Anchor_3264483-P_27_R%7CGRPENGPAMS____

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