1994 Accord ex. When I start the car it stallsIt only stalled two times after starting. The vacuum hoses are good. Could the cause be a main relay?

 

Yes it COULD be a main relay fault, consideration given to the 90-93 Accords being the most problematic of main relay faults.

The Key to faulting the main relay, as per your description, is to listen for the fuel pump running for the 3-5 seconds when the key is turned on.