CHEVY MALIBU
1999
3.1 V6
dash lights =
CHECK ENGINE LIGHT
codes = P1404
work done to repair = REPLACED EGR VALVE AND GASKET, LIGHT WENT OFF
FOR
ABOUT 50 MILES AND IS NOW BACK ON.
Tech = mw
question = Is there anything else that may be causing the check engine
light to come on?  What else can I do?






MW:
This codes is for EGR closed position performance. If replacement of the valve did
not fix  it, then the next thing to look for is broken/stretched wires at the connector.
The cooper  wire inside the colored insulation can break. A tug on each individual
wire would show the  insulation stretching. That is a sign that the wires is broken.
There may be a blockage in the
EGR port in the intake manifold. This will also
cause this  code.
Let me know if you need more assistance.
                                           
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