1999 Mazda Truck Check Engine Light

1999 MAZDA TRUCK
193,000 MILES • 6 CYL • 4WD • AUTOMATIC
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Had an OBM test and it showed that EGR. Replaced the EGR twice and the check engine light remain on after
driven. Any other suggestions would greatly appreciated.
Dec 15, 2007 at 1:26 PM
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MERLIN2021
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Was it a P0401 code? if yes do this...Pull the egr off, clean the port under it all the way to the throttle plate, I use a length of steel coathanger...put it all back together, reset the codes, if light comes on again, replace the EGR position sensor, thats the one the two small hoses from the exhaust plug into!
Dec 15, 2007 at 1:43 PM
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ADVANTRA
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The air hose seems to be clear. I can feel the air is sucking in.
Dec 15, 2007 at 1:50 PM
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MERLIN2021
  • ✓ASE Certified Mechanic
  • 17,250 POSTS
  • ASE Certified Mechanic
I didn't say anything about an air hose...the port under the EGR? is that what is sucking in air? Still clean it out, if light comes back on, and it is P0401 code, replace the position sensor...
Dec 15, 2007 at 1:59 PM
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