Thanks very much. I replaced the O2 sensor last year, and the secondary air
pump after that because it froze.
Though I never knew that Autozone can reset the computer. Thanks again.
>>My 1996 Saab 900S did not pass the Tennessee emisions test.
>>The reason given was "Monitors need reset," and the issues were:
[quoted text clipped - 29 lines]
> it's been gone a long time you may have cat converter issues. You'll
> need to do some testing/work or have a shop do it for you.
>Thanks very much. I replaced the O2 sensor last year, and the secondary air
>pump after that because it froze.
>Though I never knew that Autozone can reset the computer. Thanks again.
Makes more sense...probably there was a code stored in the computer
from those failures. Because it was very old, the emissions test
flagged it as "old and unreliable".
In that case, get it reset. Drive a while so that they don't fail you
for too few hours, then re-tst.
squid - 09 Jan 2008 04:52 GMT
> >Thanks very much. I replaced the O2 sensor last year, and the secondary air
> >pump after that because it froze.
[quoted text clipped - 6 lines]
> In that case, get it reset. Drive a while so that they don't fail you
> for too few hours, then re-tst.
If it is a motronic car(non-turbo) the flags will reset each time the
key is turned off. It has been a random occurring problem here in the
Great NW, and is the nature of that vehicle. Have you tried an
emissions test with this vehicle before? It can be a frustrating
battle with the tester, but the car has to complete a drive cycle to
set everything to ready, and be taken in to the test facility on the
same key cycle. Without turning key off, the test facility can read
that all status' are 'ready'. Then the key can be cycled to check mil
operation. If it is a turbo car, then it needs to be driven through a
drive cycle until all tests have ran and passed. Of course if there
are stored codes, that will not happen. Clearing the codes will reset
everything to 'unready'. You might talk to a service facility, or Saab
dealer, and see if they are familiar with this. The drive cycle is a
specific criteria designed for each test to run, a service facility
may have some information on this for you. Good luck.
Gerald