» » »

Acura Q&A

Ask Your Question

1996 Acura TL Question: why Will my car not pass smog?

 

Question

melissapham, Merced, CA, May 03, 2012, 11:28
 Rookie

the code P1491 pops up in the system. I replaced and even cleaned out the egr valve really good, reset the check engine light and it still will not pass smog. What can I do? The smog tech said that everything looks good in my emissions and my engine but that code still pops up. Now my check engine light is back on again.

1 Answer
Flag This
  • Answer #1

    Ab318 from Auto Check Plus Service & Sale, May 03, 2012, 11:35
     Enthusiast

    The egr ports inside your intake manifold are probably clogged, it may have to be removed to thoroughly cleaned. Or it may be a problem with the egr control solenoid.

    Reply
    Flag This