1997 Altima passes emissions, but fails overall smog.

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caviterruptor - 04 Jan 2008 08:11 GMT

My 1997 Altima with 120k passes emissions, but fails overall smog
inspection because "MIL/Check Engine Light" results in "Fail".

The bulb is fine, as it illuminates, then promptly discharges upon
starting.

Two smog guys have said all that's needed is to run the car @ freeway
speed for about 30 miles, which I've done five times over, to no
avail.

What else can be done to rectify "MIL/Check Engine Light" failure.

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Fred Buchholz - 05 Jan 2008 01:46 GMT

You need to plug in a scanner to the OBD II port under the dash. If the
check engine light is not on, more than likely not all systems are "ready"
for testing. There are 6-8 systems which are monitored and must be ready
for testing. The scanner will indicate readiness, and which monitors are
not.

Fred

> My 1997 Altima with 120k passes emissions, but fails overall smog
> inspection because "MIL/Check Engine Light" results in "Fail".
[quoted text clipped - 7 lines]
>
> What else can be done to rectify "MIL/Check Engine Light" failure.

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