What is your question?
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What is your question?
What would be making the car stall when it warms up?
What makes this problem better or worse?
when engine warms up
How long has your 1999 Mercury Tracer had this problem?
a couple days
1 Reply
Hello, I would be concerned about fuel delivery or vacuum leaks. Either can be tested at home with the proper tools. I would, however, expect some additional issues to come up if fuel delivery or vacuum leaks were the issue, so I recommend scanning for trouble codes before replacing any parts or continuing with diagnostics.