Hello

I've been reading everywhere and I think my problem is the "speed sensor". Where is it and would it cause these symptoms. No CC engine limits to 4000rpm all gears ABS light on? Other than that car runs fine shifts up down great mileage same. I am waiting on service manual but need to drive on tue for work trip. would like to fix on monday. Car ran great b-4 rear ended. I'm assuming that someone else has had this problem. I would appreciate anything at this point, I just don't want to damage the car if something else.
Thank you
Martin

1994 E420