1999 Saturn SL2 4 cyl Front Wheel Drive Automatic 180, 00 miles
Okay here goes. I have a 1999 Saturn SL2. I got the infamous P0401 engine code, which means which is for EGR insufficient flow.
Okay Here are the things that have been taken care of in the last year emission wise:
1. New catalytic converter
2. New 02 sensor, front one.
3. New Engine Coolant Temperture Sensor
4. New EGR valve, gasket
5. New PCV valve
6. New correctly gapped NGK spark plugs
7. New Plug wires
8. EGR passages checked for flow and cleaned as well as can be without taking exhaust manifold off.
Car's oil usage is about a quart every 900 miles or so.
So the question is, is there any other sensor or test I can conduct that might contribute to this issue and ultimately have it solved?
Wednesday, May 5th, 2010 AT 12:29 PM