My 2009 300 w/ 2.7L and only 32K miles occasionally takes about 3 seconds of cranking before it fires up, and a couple of times it has coughed and nearly died.
This seems to happen mostly when I get in the car to come home from work in the afternoon on hot days (105F+). The car has been sitting for up to 9 hours. It happened less than once a week last summer, but seems to be 2 or 3 times a week now.
I've tried turning the key to the "ON" position for 3 seconds before turning to the "START" position to engage the starter to give the fuel pump so time to build pressure, but it doesn't seem to make a difference.
I had a nearly identical problem in my '96 Grand Cherokee that turned out to be the IAC valve which wasn't reacting fast enough until the engine warmed up. Of course, it finally left me stranded somewhere before I fixed it.
I want to get it diagnosed before it becomes a real problem. Any ideas? CPS or TPS, maybe?
This seems to happen mostly when I get in the car to come home from work in the afternoon on hot days (105F+). The car has been sitting for up to 9 hours. It happened less than once a week last summer, but seems to be 2 or 3 times a week now.
I've tried turning the key to the "ON" position for 3 seconds before turning to the "START" position to engage the starter to give the fuel pump so time to build pressure, but it doesn't seem to make a difference.
I had a nearly identical problem in my '96 Grand Cherokee that turned out to be the IAC valve which wasn't reacting fast enough until the engine warmed up. Of course, it finally left me stranded somewhere before I fixed it.
I want to get it diagnosed before it becomes a real problem. Any ideas? CPS or TPS, maybe?