Question about 2001 Chevrolet Tracker
We keep getting the code for evap system malfunction. everything checks out fine and car even passed inspection. its a 1999 chevy tracker. light will stay off for over 600 miles and come on for no apparent reason. we have bought new gas cap and tightened all hoses, where do we look now?
Problem not solved. its a 1999 chevy tracker not a 2001.
Posted on Nov 15, 2008
Http://www.obd-codes.com/p0440 you may find the answer here or at least what to check. It sounds like the code is intermittent which probably means something is going out just has not yet. My guess is you may have a leak in a hose( maybe a split or crack in hose)
Posted on Dec 07, 2008
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Posted on Jan 02, 2017
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Thermostat Rationality Test
Check the operation of the thermostat (it may be stuck open).ECT Sensor is contaminated, damaged or it has failed.Inspect for low coolant level or for an incorrect coolant mixture.Trouble Code: P0440
EVAP Purge System Fault
EVAP purge valve vacuum supply is leaking or clogged.EVAP purge valve is stuck closed.EVAP purge solenoid has failed.NVLD assembly (leak detection) is damaged or has failed.NVLD switch circuit is open or the NVLD switch has failed.Ground circuit is open.PCM has failed.Trouble Code: P0456
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Generator field control circuit is open or is shorted to ground.Generator field control circuit is shorted to system power (B+).Generator field ground circuit is open.Generator is damaged or PCM has failed.PCM has failed.Here are the codes and causes.
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