Q: Starting problems after driving it for awhile.

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Hello, My Sienna 09 runs very good on highway even over 70 miles/hr. Has lots of power. Unfortunately, when I park it going shopping or so, the car won't start. So I had to wait 15 or 20 minutes and it started again with no problem. One time, I drove it for an hour and half in traffic and it started jurking like if it's gonna shuts of, but it never did. Could it be Efi relay. I switched fuel pump relay once but nothing happened but never tried Efi relay or others. By the way, I cleaned the intake manifold and the MAF was cleaned and performing very well. Sometimes fuel pump dosen't make the sound" the click" Thank you.

My car has 62000 miles.
My car has an automatic transmission.

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