i recently had my car not start and it thru this error code p0190
fuel rail pressure sensor circuit A replaced the frps and car started fine. drove about 10 miles, shut car off. Would not re-start. tries to, but seems like it is not getting fuel as same code thru again. waited 15 minutes, car started right up, ran fine. got home, put in garage, went out yesterday, started right up, pulled out of garage. 2 hrs. later went to put back, would not start. did not throw code this time, waited 30 minutes, started right up. I'm nervous to drive anywhere for fear of not starting back up. Fuel pump? Relay ? not sure what to check next. any suggestions?