Change gas tank and erase OBDll, check gas filter and tank for leakers and found nothing, however, it come back
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1996 Pontiac Sunfire Question: P0442, Help, fix for emmmision.
csubak30 June 11, 2014, 18:55Master
Most likely causes are: fuel filler cap is loose and need a new one due to gasket wear, fuel filler neck has rusted and there is a hole breaking the vacuum or an evap system hose is leaking. Best way to find the leak is with a "smoke test" at a shop.
Answer #2ziptie12 June 11, 2014, 19:38Master
. . vm.