98 Concorde sometimes will not start

[normburns]

after stopping for a few minutes. It will spin, and spin, and spin, but will not catch. My mechanic told me to hold the throttle to the floor for a couple of minutes, release it, then try to start... it does seem to help a little. It tends to do it on a hot day, more than on a cool one. Throwing no codes, that would be WAY too easy. My suspicion is the air temp sensor. My mechanic suspects a problem in the fuel system. Any experience with this issue? Ideas?

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[CHRYSLER TECH]

air temp sensor is not required to start the car up check for spark and fuel see which is not present to make it start up

[normburns]

Thanks. That sort of fits with what my mechanic has been suggesting. The problem is intermittent though, so that makes it difficult to figure out.