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Sent to Car Experts July 10 2005 at 3:09 AM
   

I have a 1997 pontiac grand am, I have recently replaced one of the coils, coil module housing, spark plugs, plug boots, O2 sensor, catalytic convertor. Car still gets an inefficent catalyst code from the computer, what might be causing this?

Customer (name blocked for privacy)
Status:  Closed   Value: $5
Info Request
July 10 2005 at 3:13 AM (3 minutes and 42 seconds later)
         
REPLIED to Info RequestCheck Mark
Did you use an "aftermarket" catalytic converter or an OEM factory replacement?
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Hammer Time -- L1 Master Technician -- 98% Positive Feedback on 2718 Car Accepts
ASE Mastertech with Adv level Engine performance cert.
Reply
July 14 2005 at 5:25 AM (4 days and 2 hours later)
         
Reply to Hammer Time's Post: "aftermarket" or "universal" for that car per muffler shop.
Customer (name blocked for privacy)
Answer
July 14 2005 at 10:18 AM (4 hours and 53 minutes and 41 seconds later)
         
ACCEPTEDCheck Mark
You still have a bad cat problem. There really isn't any way to get a false code on that. They may have used the wrong catalytic converter. That uses a special one for OBDII. Check your receipt for a part number. The OBDII part numbers all start with a 6 and the non-OBDII start with a 5.
Picture
Hammer Time -- L1 Master Technician -- 98% Positive Feedback on 2718 Car Accepts
ASE Mastertech with Adv level Engine performance cert.
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