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7 votes
Accepted

Canister purge valve constantly opening

The Purge is controlled by the PCM with a pulse width modulated switch signal. It is normal for it to cycle rapidly. This allows small amounts of the fuel vapor to be metered into the cylinders. This ...
Fred Wilson's user avatar
  • 11.6k
2 votes

Could a bad purge valve be my problem?

OK, so utilizing information from @MTA about the actual operation of the purge valve, I applied 12 volt DC to it and it operated but never sealed when not energized. This confirmed a bad valve. I took ...
JACK's user avatar
  • 365
2 votes
Accepted

Could a bad purge valve be my problem?

I have no specific knowledge on the 2008 LaCrosse, however -- Be careful with your assumptions. The purge valve is usually under the hood and is normally closed when not energized. The vent valve is ...
MTA's user avatar
  • 6,405
2 votes
Accepted

Understanding the Voltage coming into an Evap Purge Solenoid

From what you are describing, it sounds like you are testing the voltage to the solenoid while the solenoid is unplugged. If so, that is not a valid test, you need to have a “load” connected to the ...
HandyHowie's user avatar
  • 25.4k
2 votes

95 blazer evap can purge solenoid valve to evap purge pressure switch valve

Don't know if this helps; best I could find...
SteveRacer's user avatar
  • 12.4k
1 vote
Accepted

Where is the Nissan Rogue purge valve?

It's under the hood on the right side of engine compartment. Unplug the connector, figure out which side is the computer controlled ground. Backprobe the ground wire. put a vacuum pump on it and ...
Ben's user avatar
  • 10.7k
1 vote

Fuel in the solenoid purge valve line

OK this is embarrasing!! I pulled the wrong line. Whatever was the other line is probably the one that brings gas to the engine. I guess the lesson is do not try to do this late at night with very ...
rjss's user avatar
  • 131
1 vote
Accepted

Vent Valve (Solenoid) leak and fuel consumption

Well there was a vacuum leak. Plain and simple logic dictates a drop in fuel efficient performance as the gases are not being recycled as the Evap system would when it's running without leaks at ...
Lawyer Aidroos's user avatar

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