Sometimes I will be driving down the road & the car will just die with no indications what so ever, it also does not want to start sometimes. As soon as you hear the fuel pump humming it will fire right up. There are no codes coming up & we have replaced the fuel pump & ignition switch & it still has the same problems. Someone has told us to replace the pcm but it is rather pricey & was wondering if it could possibly be something else before I go spending to much more money trying to figure this out. It seems like it happens when my car sits at idol for at least 45 minutes or so, not sure if its just a coinsidance but could it be something overheating? Would appreciate any kind of advice you can give.