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PROBABLY NOT! Re: No, catalyst is shot
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Posted by saabsince 93b [Email] (#972) [Profile/Gallery] (more from saabsince 93b) on Wed, 6 May 2020 23:34:48 Share Post by Email
In Reply to: Re: No, catalyst is shot, Peter N, Wed, 6 May 2020 19:04:43
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I think your mechanic is wrong.

If the cat was bad you would get a high voltage like 1 volt reading on O2 sensor 2......NOT no reading. NO reading could be a bad ground which is what J16 error does.

These cats last forever. My 2000 aero has over 200,000 miles on the original cat. I have NEVER replaced a cat on a Saab 9-5 and I have owned many of them and most high mileage......and CA smog tests every 24 months.

1. Is this a Saab knowledgeable mechanic?
2. Did he troubleshooot with a Saab tech2 scanner?
3. How many Saab 9-5 cats has he replaced?
4. has he done a lot of Saab work?
5. what are the voltage readings on the 2 O2 sensors?
6. Has you mechanic heard of the J16 fix?

The O2 sensors really keep track of the cats. #1 would read high like .4 to 1 volts. This is before the cats.
#2 sensor reads after the cats. should be below .5 volts.

Tech 2 will tell you the EXACT VOLTAGES. Ask your mechanic what the vltages read. If he does not know, FIND A NEW MECHANIC.

Try the J16 fix.

->Posting last edited on Thu, 7 May 2020 09:07:30.
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