My 97 a4 quattro audi 5 speed has been having a very unsteady rpm count while in neutral and also when put the clutch in. so bad that when i was driving and put the cluch in to downshift it stalled out.. t did this couple times before i was able to park my car... it is still doing this. any help would be gladely appreciated thanks

yea there is but the check engine light is on because of the engine coolant system.. i actually kinda fixed the problem by putting in a new air filter. but 3 new problems have come up: 1st my wireless key isn't locking or unlocking the doors(put new batteries in and got nothing) and i also cant manuely look or unlock the doors either. tried using a de-icer and it failed. 2nd my odometer completely went black. 3rd my anti freeze is leaking and i cant find the leak, i beleave its coming from the block. thanks for the help yea there is but the check engine light is on because of the engine coolant system.. i actually kinda fixed the problem by putting in a new air filter. but 3 new problems have come up: 1st my wireless key isn't locking or unlocking the doors(put new batteries in and got nothing) and i also cant manuely look or unlock the doors either. tried using a de-icer and it failed. 2nd my odometer completely went black. 3rd my anti freeze is leaking and i cant find the leak, i beleave its coming from the block. thanks for the help