My car it is quick to start the engine,and when I run the car after 5to 6 miles shutting down automatically without any warning and it show the check engine light..after that its hard to start the engine...then ill wait 5 to 10 minutes start the engine and run again, after 50 meters shutdown again..but I know the problem before, I change only the main relay and back to normal...and now the problem is going back again and I change the main relay again and still have a problem, I change already 5 times of main relay for this month and still the same..so for your idea do we have any problem except the main relay? So please can you help me to fixed my car thanks...