My thermometer was off 10 degrees F and I pitched the yeast at 86 degrees F, can I re pitch the yeast after a week of fermenting? It did ferment for 2 days then it stopped, looks dead!!!
You didn’t kill the yeast, they love that temperature. It makes for vigorous fermentation. Two days of airlock activity is about right for a medium gravity beer pitched at such a high temperature. Of course, the airlock could be deceiving anyway, so just check the gravity. I bet it is near the target final gravity. Give it some time to finish up the last few percent and then bottle.
Oh, and fix your thermometer 
and try to chill below 70 next time.
Thanks for the reply…
I’m not so sure of the final gravity number, I am doing a Nut Brown Ale,the last one I did was a Bavarian Hefeweizen with the same thermometer and it did not carbonate properly I hope the same doesn’t happen with this one… 
Thanks again!
Did you measure the original gravity? As a rough ballpark you can assume 75% attenuation which means if the OG was 1.05, the final gravity should be around 1.012. But even if that is a bit off, if the gravity is ‘low’ (say below 1.02) you didn’t kill the yeast – whatever problems you might have, that isn’t it.
If your bottles aren’t carbing, that could be several problems, but lack of yeast isn’t likely. Off hand, I would say it could be too little sugar added, to cold a temeprature for carbonation, or bad seals on the caps.
