ok heres what happened I was driveing down the road in the snow yesterday, when i suddenly lost control,went round and round and the truck cut off in the middle of the road while i was going around, cranked it back up and it started doing a "turbo surge" kinda thing but the boost was forceing itself to 0, so I parked it and let it idle for 15-20 min.s then cut it off and then drove it home just fine, woke up today 40-45+ degrees today drove around just fine, came out of walmart to night after being inside probally 30+ mins with the outside temp. around 20 degrees and when I came out I cranked the truck up and took off(no idle time,had to leave *long story*) so the truck started "surging" again, forcing the boost to 0 then back to where it was then back to 0 or very low HELP ME