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Old 05-31-2015, 12:56 PM
Tech II Tech II is offline
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Re: '08 Base - Air Pump operation problem/question?

Air pump has nothing to do with evap codes...two different systems....

In warm weather, if your coolant is above a certain temp, it will not run at all....tends to run more in the colder months, because the coolant temp is much lower....

Sounds like you have a P0440 or P0442.......if not the gas cap, then could be vent or purge solenoids, a leak, pressure sensor, etc...

Only way to know for sure is a smoke test.....
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