ive been having problems with this car recently had simalar problems i have changed the silenoid purge v, and they also changed the fuel pump and fix some wires on the harnes, now i have this problem with this code? can someone help......
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1999 Buick LeSabre Question: i have engine light on , again , it is tellin me a code of po 440 ?
Answer #1pushrod September 05, 2012, 17:03Master
Scanner should indicate where to start looking.
J3rzy February 03, 2013, 09:36Rookie
code po440 evaporative emissions control system malfunction....
evaporative emissions leak ....dont get nervious its just the gas cap check it to make sure the rubber seal around the cap is not dry-rotted..I would just replace the cap with a OEM cap from your local parts store in witch the code should go away on its own after a few opening and closings of the gas cap ....
hope this helps
Replytuggboatt1962, February 03, 2013, 20:42Rookie
i did change the gas cap , an the light is still on ,, its been awhile now ?
Replypushrod, February 03, 2013, 23:38Master
If you decide to repair this have a shop perform a smok test to reveal leak.
It has been awhile!
Replytuggboatt1962, February 04, 2013, 09:20Rookie
thank you , for yr time my friend ..