[slaw]

It took me about a month to find the problem. I didn't have the check engine light on at all. My TPS sensor was bad, so I had it replaced then adjusted with the gauges. The car was running okay for a few days, but then the problem came back. I also changed the temperature sensor, but that didn't solve the problem either. I was measuring by back probing the MAF sensor and I didn't get the right numbers at certain RPMs or idle, so I decided to replace it. Like other people have been saying, the check engine light didn't turn on at all. After replacing the MAF sensor, the car was running normally. I bought the sensor at a junkyard for $70. After two days, the check engine light came on with crank sensor REF code. So I replaced it and I cleaned the crank sensor POS- it was covered completely by metal shavings. I would advise to check all of the connections to sensors and to clean them up with a contact cleaner.
Hope this helps!