I have a 98 toyota camry that cut off while driving twice in three months. I let the car sit overnight came back and it cranked right up. Well it happened a third time about two weeks ago. It wouldn't start the next day or the day after. I changed the fuel filter, pump was tested and is good. I also changed the plugs, wires, and timing belt. I am running out of money for repairs because of the money needed to close on my house. Please someone help