Question about 2000 Saturn SL
2000 sl1 saturn ODB Codes
P0404 EGR feed back signal
P0413 Air switch valve A circuit open
P0410 Secondary air injection system
i suspect EGR , vacuum hoses are good,
wire circuits getting good juice,
how do i find and test the secondary air circuit and EGR
Dude buy a new egr or buy a can of tbcleaner remove the 2 screws on egr and ele connnector for exact percedure look up cleans throttle body rich pinn you tube GL
Posted on Dec 08, 2012
Check for intake manifold leaks and carbon in EGR pipe and EGR.
vacuum leaks on intake manifold,
the air tube between the air filter.
intake manifold vacuum hose.
clean throttle plate with Berryman carburator cleaner
SEE sample picture HERE
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.
Posted on Dec 19, 2009
Using an ohmmeter, you may be able to find the proper specs by googling "proper resistance for egr on 2000 saturn sl1"
Posted on Oct 06, 2009
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Posted on Jan 02, 2017
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