I still owe a couple thousand on my car payment through Wachovia bank and I read online today about a possible combination between them and Morgan Stanley. Will that effect my loan at all if the combination goes through?
If Wachovia ends up going “bankrupt” how will that effect my loan?

Your loan continues. The only possible impact is that it might be transferred to another lender.
Nothing. That Loan is STILL yours to keep paying. What’s “saved” can disappear…-but what’s OWED is Ours forever…
Your loan is an asset that the bank owns. If they go bankrupt, it will be sold to a different institution and you will owe the new “man.”