Question about 2001 Buick Regal
Check engine light on, Code P0440. Dealer said thermostate was the problem. He replaced Thermostat $160 and light came back on after 100 miles. Code still P0440, 2002 Buick Regal.
Wow thermostat >>>> shucks i believe its evep emissions code like faulty gas cap ....you can reset any computer the chck eng light will come on in 50 to 100 miles if not fixed....
Posted on May 08, 2009
I have the same problem. The check engine light comes on when the tank goes to 3/4 or less, if I keep it full it eventually shuts off. I tried a new gas cap but it didn't help.
Posted on May 17, 2010
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Posted on Jan 02, 2017
Tips for a great answer:
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5.Connect the new EVAP vent solenoid harness (3), P/N 22687059, to the EVAP vent solenoid (2), route the harness above the rear ABS harness (4) and connect the EVAP vent solenoid harness (3) to connector C313 (1).
6.Lower the vehicle.
7.Clear the DTC's with the Tech 2 scan tool.
If all of the wires are good you will want to check for any leaks in the evap system.
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