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2000 GT exhaust smell through AC

Just started to experience an exhaust smell coming through my ac when stopped at lights but when im driving it disappears. What are some common exhaust leaks spots on these cars if known.

Leaks at the exhaust manifold are the main culprit. That can be from the head, to the flange, or any
leak before the primary cats.

Quote:

Originally Posted by 08'MustangDude (Post 8645769)

Leaks at the exhaust manifold are the main culprit. That can be from the head, to the flange, or any
leak before the primary cats.

So i was wrong about what kind of smell it was. It is actually a smell of gasoline. This smell only occurs when the car is stopped at lights or stop signs and there is a lingering effect even when the car isnt turned on yet. I've read some things about a possible canister purge solinoid but everything i read says that only cause rough idle.