i installed a trans cooler so now my 350 runs about 100 degrees when on the freeway. when ever i first start it my tranny acts like it is in neutral when i shift into reverse or first. for example ill start my car put it in drive and the engine will just rev, then it will catch like a second later and go into drive. whats the deal? in reverse it is the same. once it is started it will shift like normal.