I got a new valve assy. solenoid and still get the same code keeps comming back po443. What to do next? The plugs keeps getting alot of carbon on them and when I turn it off it sometimes take a few min. to start back up. I know that the carbon has alot to do with it starting. Help me to fix the problem show me some pictures of what to do to fix this issue.
P0443,look at the evap control system pressure sensor,or the evap canister purge volume volume solinoid valve[the valve is stock open]hoses,,maybe the hoses are connected incorrectly..
SOURCE: 1997 nissan altima cranks over but dont start sometimes once a we
that could be your starter
SOURCE: code p 1446 solenoid valve malfunction in sentra 2005
I have the same problem with my 2005 sentra. It is the vent control valve. The only cheap way to fix this would be to take it off and spray wd-40 and see if it works. You could also get the part form a junk yard. Nissanpartsdirect also has it. I beleive it is officially called the vapor canister.
SOURCE: 2004 xterra P0505 code-idle air control
IAC valve has gone bad. Its located on the throttle body and is what controlls/keeps the vehicle running at idle.
SOURCE: i am getting p0400 and p 0402 codes
Check the EGR air passage tube again.
You may miss some on the first pass.
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Check for
vacuum leaks on intake manifold,
the air tube between the air filter.
intake manifold vacuum hose.
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clean throttle plate with Berryman carburator cleaner
SEE sample picture HERE
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Also remove carbon built up behind the EGR valve and the EGR passage tube.
===
Vacuum leak WILL offset the intended 14.7 to 1 air fuel ratio.
More un-metered air (leaks) will lean out the fuel mixture.
Use small amount of Berryman carb clearer at potential air leak area will help you identify trouble spot.
At idle,just spray and listen for the RPM surge.
The in-rush of carb clearer will increase the RPM on the motor.
Record the problem spot(s) and address it later.
===
EGR carbon built up require 2+ hours to clean from start to finish.
You will need a new EGR base gasket before your start.
Locate and remove the EGR valve after the vehicle is cool down.
Carefully record the connector and vacuum line (for older vehicle) location by drawing an easily to follow diagram.
Remove the EGR valve.
Inspect the location of the carbon built-up inside the valve and the EGR passage tube.
SOAK these areas with WD-40 spary.
You will need a small screwdriver,cloth hanger and lot of newspaper and time to get this cleaning done right.
RE-SOAK the carbon and let it sit for over-night will also help.
One the last round,pass a shop vacuum of the EGR valve and the passage pipe.
Install the new EGR gasket and connectors.
Allow the vehicle to warm up outdoor to burn up any remaining WD-40.
Take it for a test drive.
Please rate my answer if it's useful to you.
Cheers,
Mustgo
SOURCE: i have a engine lite on and the code is po443
P0443 code - Evap Purge Valve Solenoid malfunction.
Check to make sure your gas cap is on tight
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